Mark Savage
(Sandia National Laboratories)
06/07/2016, 08:15
Oral Presentation
Prof.
George Chen
(University of Southampton)
06/07/2016, 10:00
Solid dielectrics have been widely used as insulation in power industry and often experience degradation/aging under hostile operation conditions. Their designed lifetime may be compromised. Therefore, it is important to identify the status of the insulation. Traditionally, the lifetime of solid dielectrics has been estimated using the inverse power law without the knowledge of detailed...
Andras Kuthi
(University of Southern California)
06/07/2016, 10:00
The effects of core and copper losses on a novel magnetic compression based stepped impedance transmission line pulse generator circuit is presented. Design equations are derived and presented which take into account the current leakage into neighboring cells, losses due to magnetizing inductance currents, losses due to saturable cores and copper losses in the saturated inductance windings. It...
Prof.
Chenguo Yao
(Chongqing University), Mr
shoulong dong
(Chongqing University)
06/07/2016, 10:15
Pulsed power technology has been used for the ablation tumor. Considerable research shows that a high-strength unipolar pulse electric field can induce irreversible electroporation (IRE) on the cell membrane, which can effectively kill cells. But some scholars and doctors have found that muscle contractions occur during treatment, which are associated with the delivery of electric pulses....
10.
Two-dimensional numerical modeling of electric field and correlation to breakdown – Area scaling
Enis Tuncer
(Texas Instruments Inc.)
06/07/2016, 10:30
An attempt was performed to illustrate dielectric breakdown and volume/area scaling in non-uniform fields. Actual scanning electron microscopy image of electrode surfaces were used (after digitization) with an effective medium approach, where the material assumed was an representation of a composite. The digitized outline uploaded to a finite element numerical solver. Electric field calculated...
Hongwei Liu
(Institute of Fluid Physics)
06/07/2016, 10:45
Repetitive Pulsed Power Systems, Repetitive Pulsed Magnetics, Accelerators, Beams, High Power Microwaves, and High Power Pulse Antennas
Poster Presentation
A compact low impedance Marx generator was designed and tested. The generator consists of twelve stages and each stage utilizes two 18 nF 100 kV capacitors and four 1 nF 100 kV capacitors. When charged to the rated voltage of the capacitors the energy density of the complete generator is 15J/L. In the Marx generator different discharge periods form the capacitors added to the main circuit and...
Dr
Tomohiro Furusato
(Nagasaki University)
06/07/2016, 11:00
Recently, a pulsed power switch using supercritical fluids has been investigated due to its high insulation strength and excellent extinguishing properties [1], [2]. The supercritical fluid switch is expected as an alternating medium of SF6. But, little is known about the energy consumption characteristics, which is unignorable effect on the efficiency of switching devices. This study deals...
George Laity
(Sandia National Laboratories)
06/07/2016, 11:00
Repetitive Pulsed Power Systems, Repetitive Pulsed Magnetics, Accelerators, Beams, High Power Microwaves, and High Power Pulse Antennas
Poster Presentation
Load current multipliers (LCMs) are specialized impedance transformers used in pulsed power generators to improve generator-to-load coupling at high power densities. These devices were recently demonstrated to increase load current by 70% on a 1 MA / 100 ns generator [1], but the concept has not been evaluated experimentally on higher current (>10 MA) generators. For example, plasma...
Mona Ghassemi
(INGIVRE\UQAC)
06/07/2016, 11:15
Four separate FRP hot-stick flashover incidents have occurred in Canada during live-line working under steady-state system conditions at the peak of the voltage negative half-cycle during cold and freezing conditions. The incidents were reported at 500-kV AC line voltage working stress (95-96 kV/m) in 1997 and 2002 in Manitoba, and at 230-kV AC line voltage working stress (71 kV/m) twice in...
Aric Pearson
(University of Missouri)
06/07/2016, 11:30
A new type of metamaterial has been developed at the University of Missouri for use in pulsed power and high power microwave systems. These materials also have direct applications in dielectric-loaded components and nonlinear transmission lines. We present a double-positive metamaterial that incorporates high permeability, high resistivity nickel-zinc ferrite powers into a dielectric matrix....
Jianqiang Yuan
(China Academy of Engineering Physics)
06/07/2016, 11:45
Repetitive pulse X-rays play an important role in the investigation of various physical processes in hydrodynamic experiments. Generation of repetitive pulse X-rays requires repetitively operating all solid state pulsed power source and X-ray diode.
As the testbed for repetitively operated diodes, a stacked Blumlein line (SBL) type pulsed power source (220 kV, 1 kA, 1 kHz) based on high...
Mrs
Chengyan Ren
(Institute of Electrical Engineering, Chinese Academy of Sciences)
06/07/2016, 11:45
Pulsed discharge in water has been widely used in seismic prospecting. The spark source used in the sea or on the land has formed series of products, which is based on the pulsed discharge in expansive water domain, such as in the sea or in the deep well. But the traditional spark source is not applicable in some places short of water, especially in the mountain region. Therefore the...
dong zhang
06/07/2016, 13:30
Repetitive Pulsed Power Systems, Repetitive Pulsed Magnetics, Accelerators, Beams, High Power Microwaves, and High Power Pulse Antennas
Poster Presentation
Magnetic Pulse Compressor (MPC) is an efficient solution to obtain high compress gain, high repetition rate and high voltage output. A 100kV nanosecond pulse generator based on MPC is presented. For an improved efficiency of compress, a gas switch, a pulse transformer and a saturable pulse transformer are combined to compress the pulse width; meanwhile, the voltage output is amplified as well....
Tony Fowler
(CERN)
06/07/2016, 13:30
Repetitive Pulsed Power Systems, Repetitive Pulsed Magnetics, Accelerators, Beams, High Power Microwaves, and High Power Pulse Antennas
Poster Presentation
As part of the LHC Injector Upgrade (LIU) project, the production of a high-intensity proton beam in the Proton Synchrotron Booster (PSB) at CERN will be achieved by injecting a beam of H- ions from the new LINAC4. During the injection process the two electrons of the H- ions are removed with a stripping foil across which the machine orbit is shifted to fill the machine aperture with beam. The...
Dr
Tao Xun
(College of Opto-electric Science and Engineering, National University of Defense Technology, Changsha 410073, China)
06/07/2016, 13:30
Research on the surface flashover of the vacuum interface under pulsed voltage is significant for the design and operation of pulsed power devices. The interface problem is difficult because the electrical, mechanical and vacuum issues that must be satisfied simultaneously. In this paper, a coaxial high-voltage vacuum interface based on ceramic-metal welding has been designed and tested with a...
Mrs
Chengyan Ren
(Institute of Electrical Engineering, Chinese Academy of Sciences)
06/07/2016, 13:30
Repetitive Pulsed Power Systems, Repetitive Pulsed Magnetics, Accelerators, Beams, High Power Microwaves, and High Power Pulse Antennas
Poster Presentation
Plasma synthetic jet (PSJ) is considered as one of the effective plasma actuators for flow control, which has drawn much attention. In this paper, a compact microsecond-pulse generator with high-voltage and three outputs is developed for achieving synchronous discharge for three PSJ actuators. The working principle of the generator is introduced and the waveforms of each part of the circuit...
Mr
Yan Mi
(College of Electrical Engineering, Chongqing University, China)
06/07/2016, 13:30
Repetitive Pulsed Power Systems, Repetitive Pulsed Magnetics, Accelerators, Beams, High Power Microwaves, and High Power Pulse Antennas
Poster Presentation
Magnetic compression system (MPC) is suitable for generating (Dielectric Barrier Discharges) DBD discharge due to its capability of producing high amplitude and short pulses voltage wave. Because of the frequency limit caused by magnetic core reset, and the high DBD discharge voltage, which is often up to several tens kV under the low-frequency unipolar voltage wave, this paper proposes a...
Dr
Davide Aguglia
(CERN)
06/07/2016, 13:30
Repetitive Pulsed Power Systems, Repetitive Pulsed Magnetics, Accelerators, Beams, High Power Microwaves, and High Power Pulse Antennas
Poster Presentation
In particles accelerators pulsed magnets are typically used in Linacs, transfer lines, as well as in injection and extraction areas. The required power converter current and voltage ranges can be very wide and depends on the beam energy, and the actual magnet and building configurations. This is even truer for large physics research facilities such as CERN.
It is of great importance that the...
Mr
Jiaqi Yan
(State Key Laboratory of Electrical Insulation and Power Equipment, Xi’an Jiaotong University, Xi’an 710049, China)
06/07/2016, 13:30
Repetitive Pulsed Power Systems, Repetitive Pulsed Magnetics, Accelerators, Beams, High Power Microwaves, and High Power Pulse Antennas
Poster Presentation
The lifetime evaluation of High Voltage Ceramic Capacitors (HVCC), especially the ones working under repetitive pulses, is of great importance, which influences the overall stability of pulsed power system. However rare relevant studies were made under the conditions of repetitive rate pulse. In order to realize the accelerated lifetime testing for HVCC, a high voltage, high current repetitive...
Mr
Guo Fan
(Institute of Fluid Physics)
06/07/2016, 13:30
Repetitive Pulsed Power Systems, Repetitive Pulsed Magnetics, Accelerators, Beams, High Power Microwaves, and High Power Pulse Antennas
Poster Presentation
Induction voltage adder accelerators are always employed to achieve high voltage and fast rise time voltage pulse for various research aims. The voltage pulses generated by pulse forming section are added by induction cell. Azimuthal transmission line is used to ensure current uniformity at secondary transmission line section. This results in two dimensional power flow in the induction cell. A...
Prof.
Elanseralathan Kasinathan
(Pondicherry Engineering College), Mr
Logesh Guber
(Pondicherry Engineering College),
Makendran Gunasekaran, Mr
Malaiyappasamy Sivashanmugam
(Pondicherry Engineering College)
06/07/2016, 13:30
We analyze insulation failure in polymer composite blocks using different wave shapes. We found the ratio of epoxy resin (CY230_1) and Hardener (HY951) for different samples supplised by Huntsman using a needle plane electrode configuration for different sample sizes and shapes. The polymer composite blocks consisted of a combination of epoxy resin and hardener as a neat polymer with...
Chongyang Mao
(Tsinghua University)
06/07/2016, 13:30
Repetitive Pulsed Power Systems, Repetitive Pulsed Magnetics, Accelerators, Beams, High Power Microwaves, and High Power Pulse Antennas
Poster Presentation
Nonuniform transmission lines are widely used as impedance transformers in pulsed power systems such as Z-pinch drivers. The transmission characteristics of the nonuniform line are important issues for the system. As the characteristic impedance varies along the nonuniform transmission line, it is difficult to investigate the transmission characteristics using analytical methods.
In this...
Mr
Guan-Jun Zhang
(State Key Laboratory of Electrical Insulation and Power Equipment, School of Electrical Engineering, Xi’an Jiaotong University, Xi’an, Shaanxi 710049, China)
06/07/2016, 13:30
For dielectric-vacuum compound insulation systems, the discharges usually occur across the insulator surface with an onset voltage much lower than the breakdown voltage for vacuum gap of the same length. It is no wonder that the surface charge accumulated on the insulator plays an important role in the flashover process in vacuum, especially under DC voltage. In this paper, the off-line...
Baha Yakupoglu
(Auburn University)
06/07/2016, 13:30
Repetitive Pulsed Power Systems, Repetitive Pulsed Magnetics, Accelerators, Beams, High Power Microwaves, and High Power Pulse Antennas
Poster Presentation
Carbon Nanotubes (CNTs) are very diverse nano-scale materials that carry excellent electrical, mechanical, and chemical properties. In this study, selectively growing randomly oriented multi-walled CNTs are fabricated in-house on ceramic substrates by using thermal Chemical Vapor Deposition (CVD) technique. The fabricated samples are then tested for field emission characteristics and assembled...
Mr
Ryutaro Suzuki
(Nagaoka University of Technology)
06/07/2016, 13:30
Repetitive Pulsed Power Systems, Repetitive Pulsed Magnetics, Accelerators, Beams, High Power Microwaves, and High Power Pulse Antennas
Poster Presentation
A high power, long pulse modulator aimed at application to International Linear Collider (ILC) is being developed. The target parameters are: 120 kV (±0.5%), 140 A, 1.7 ms, and 5 pps, with consideration on compactness, reliability, and cost control. A solid state, chopper controlled pulsed power generator using Marx-topology has been proposed.
This paper concentrates on the switching...
Mr
Takumi Hayashi
(Nagaoka University of Technology)
06/07/2016, 13:30
Repetitive Pulsed Power Systems, Repetitive Pulsed Magnetics, Accelerators, Beams, High Power Microwaves, and High Power Pulse Antennas
Poster Presentation
A high power, long pulse modulator aimed at application to International Linear Collider (ILC) is being developed. The target parameters are: 120 kV (±0.5%), 140 A, 1.7 ms, and 5 pps, with consideration on compactness, reliability, and cost control. A solid state, chopper controlled pulsed power generator using Marx-topology has been proposed.
This paper focuses on the charging circuit and...
Prof.
Abderrahmane Beroual
(Ecole Centrale de Lyon, University of Lyon, Ampere Lab)
06/07/2016, 13:30
Due to excellent and outstanding properties in both electrical insulation and current interruption performances, sulfur hexafluoride gas, SF6, is the most used gas in high voltage power equipment such as circuit breakers (GCB), switchgears (GIS), and transmission lines (GIL) since 1960s. ; SF6 is one of the best insulators gas known to date. However, by its excessive size and life span...
Gerard Mcmonagle
(CERN)
06/07/2016, 13:30
Repetitive Pulsed Power Systems, Repetitive Pulsed Magnetics, Accelerators, Beams, High Power Microwaves, and High Power Pulse Antennas
Poster Presentation
The Compact Linear Collider (CLIC) beam-based acceleration baseline uses travelling wave accelerating structures at a frequency of 12 GHz. In order to prove the performance of these structures at high peak power and short pulse width RF, two klystron-based test facilities have been put in operation in the last years. The third X-band testing facility at CERN (Xbox3) has recently been...
Michael Osemann
(Ampegon-PPT GmbH)
06/07/2016, 13:30
Repetitive Pulsed Power Systems, Repetitive Pulsed Magnetics, Accelerators, Beams, High Power Microwaves, and High Power Pulse Antennas
Poster Presentation
As a manufacturer for industrial, medical and scientific pulsed power applications
we are frequently confronted with testing new, custom designed power
modulators, i.e. pulse generators. In their purposed applications these modulators
are often intended to be used on extremely expensive RF tubes like Klystrons.
Therefore, it became necessary for us as well as for our customers to...
Manuel Aldan
(UC Berkeley)
06/07/2016, 13:30
The purpose of this study is to characterize and order various contributions to breakdown, starting with single-surface multipactor in DC. 2D particle-in-cell (PIC) simulations will be presented for DC breakdown from vacuum through low pressure in dielectric-loaded, high-voltage systems. Simulations follow developments in [1] with a PIC model accounting for discretization errors. Models are...
Mr
Hunter Cravey
(Texas Tech University)
06/07/2016, 13:30
Repetitive Pulsed Power Systems, Repetitive Pulsed Magnetics, Accelerators, Beams, High Power Microwaves, and High Power Pulse Antennas
Poster Presentation
DESIGN AND PERFORMANCE OF AN 8 LINE GYROMAGNETIC NONLINEAR TRANSMISSION ARRAY
William. H. Cravey, Robert D. Ryan, Andreas. A. Neuber, James. C. Dickens and John. J. Mankowski
Center for Pulsed Power and Power Electronics
Dept. of Electrical and Computer Engineering
Texas Tech University, Lubbock, TX, USA
This paper discusses the design, fabrication, and performance of an eight...
Ryoma Ogata
(iwate university)
06/07/2016, 13:30
Repetitive Pulsed Power Systems, Repetitive Pulsed Magnetics, Accelerators, Beams, High Power Microwaves, and High Power Pulse Antennas
Poster Presentation
Compact pulsed power generators have been used some fields such as biology, agriculture, environment and so on. Therefore, any researchers demand functions such as miniaturization, weight saving, safety and ease to use. Recently, those control systems using a microcomputer or a field programmable gate array (FPGA) has been studied for flexible changing circuits and control of pulsed power....
Prof.
Junhao Li
(Xi'an Jiaotong University)
06/07/2016, 13:30
Gas insulated switchgear (GIS) has been widely used in power grid for its high reliability and small size. GIS is assembled in field considering the transportation. The AC withstand voltage testing will be taken in filed to verify the insulation condition of GIS. But only the AC withstand testing is not enough to inspect the all defects inside GIS. Impulse voltage testing is required in field....
Hulya Kirkici
(Auburn University)
06/07/2016, 13:30
Nano-dielectrics are shown to have improved electrical and dielectric properties compared to the non-filled bulk material. Surface flash-over is one form of breakdown, usually occurs over the surface of insulator between the energized electrodes due to high field stress when the field stress at the insulator/electrode/ambient interfaces. Understanding the characteristics of surface flash over...
Dr
Brad Hoff
(Air Force Research Laboratory)
06/07/2016, 13:30
Additive manufacturing techniques offer the potential to fabricate dielectric insulators with highly complex geometry; however, the relative lack of bulk dielectric strength data for many of these materials potentially limits the usefulness of these techniques for fabricating structures intended for use in high field environments. Furthermore, data suggests that the choice of printing...
Andrea Martinez
(University at Buffalo, The State University of New York)
06/07/2016, 13:30
Dielectric Elastomer Actuators (DEAs) are electroactive polymers capable of achieving high actuation. The key to achieving these high actuation strains is to make both the electrodes and the elastomer highly compliant without sacrificing their dielectric strength or conductivity. DEAs, because they are soft materials designed to exert mechanical stress, often break down because of mechanical...
Mr
Tonglei Wang
(Xi'an Jiaotong University)
06/07/2016, 13:30
The aim of this study was to clarify the hydrostatic pressure effect on the initiation and propagation process of oil streamers under the application of pulsed voltage with different polarities. The statistical characteristics of the impulse breakdown voltage and time lag in transformer oil were studied over a wide range of hydrostatic pressure, and the statistical discharge time lag and the...
Ms
Zenjebil Jouini
(Laplace Université Paul Sabatier)
06/07/2016, 13:30
The high voltage IGBT (HVIGBT) power modules are used in railways applications to build power converters. Ceramics are used in such modules because of their high electrical insulation properties even at high temperatures, coupled with high thermal conductivity.Dielectrics fail electrically when a breakdown occurs, which leads to a formation of an electrically conductive channel through the...
Paolo Delgiusto
06/07/2016, 13:30
Repetitive Pulsed Power Systems, Repetitive Pulsed Magnetics, Accelerators, Beams, High Power Microwaves, and High Power Pulse Antennas
Poster Presentation
The FERMI Free Electron Laser facility is based on a 1,5 GeV S Band linear accelerator. The facility operates for more than 6500 hours/year. The RF klystron modulators consist of high voltage pulse generators based on thyratron switched pulse forming networks and step up transformer technology. High output voltage stability from the modulators is required to meet the demanding specifications...
Alexander Pokryvailo
(Spellman High Voltage Electronics Corp.)
06/07/2016, 13:30
It is known that a nonuniform electric field can exert forces on neutral matter. In liquids, these forces may cause intense movement. The governing physics here are electrostatics and fluid dynamics.
In paper [1], we calculated heat transfer in a vessel filled with transformer oil using COMSOL MULTIPHYSICS®. This was probably one of the first attempts to analyze EC numerically. The present...
Dr
Qin Hu
(Central Michigan University)
06/07/2016, 13:30
Biological, Medical, and Environmental Applications of Power Modulators
Oral Presentation
Applications of electric pulses to create nanopores at the membranes of biological cells can modulate the conductivity and permeabilization in a controlled manner. Applications of such membrane poration lies in the field of biomedical engineering, drug/gene delivery, cell fusion, and electrochemotherapy for cancer treatment. In principle, various different electrode shapes and geometries can...
Dr
Xingjun Ge
(National University of Defense Technology)
06/07/2016, 13:30
Repetitive Pulsed Power Systems, Repetitive Pulsed Magnetics, Accelerators, Beams, High Power Microwaves, and High Power Pulse Antennas
Poster Presentation
The physical idea, specific structure and main testing results of a GW-class S-band relativistic backward-wave oscillator (RBWO) with pulse duration above 200 ns are presented. To restrain the “pulse shortening” phenomenon, special attentions are paid on two aspects in our designing. One is to optimize the electrodynamic structures to decrease the electric field on the surfaces of slow-wave...
Robert Ryan
(Texas Tech University)
06/07/2016, 13:30
Repetitive Pulsed Power Systems, Repetitive Pulsed Magnetics, Accelerators, Beams, High Power Microwaves, and High Power Pulse Antennas
Poster Presentation
This paper discusses the experimental results of a reprated NLTL based HPM source featuring a sealed, mid-plane triggered, spark gap switch. This new design feature is expected to result in more robust and repeatable performance. Previous high reprate (>100 Hz) NLTL systems employed trigatron spark gaps with high pressure flow which suffered from non-repeatable operation.
The NLTL is driven...
James Prager
(Eagle Harbor Technologies, Inc.)
06/07/2016, 13:30
Repetitive Pulsed Power Systems, Repetitive Pulsed Magnetics, Accelerators, Beams, High Power Microwaves, and High Power Pulse Antennas
Poster Presentation
Eagle Harbor Technologies, Inc. (EHT) is utilizing the previously developed EHT Nanosecond Pulser (NSP) to drive a nonlinear transmission line (NLTL) for high power microwave production. The EHT NSP provides independent control of the output voltage (20 kV), pulse width (20 – 200 ns), and pulse repetition frequency (up to 100 kHz). EHT is using this pulser to investigate RF production with a...
344.
High Power Microwave Pulse Compressors With a Variable Geometry of Accumulative Resonant Cavity
06/07/2016, 13:30
Repetitive Pulsed Power Systems, Repetitive Pulsed Magnetics, Accelerators, Beams, High Power Microwaves, and High Power Pulse Antennas
Poster Presentation
This work describes a new approach for designing large accumulative resonant cavities of high power microwave pulse compressors by replacing a fixed shape (cylinder, sphere, prism) microwave compressor resonator with a variable geometry accumulative resonant system. Such a system is designed based on the standard structure element made as one mode or moderately multimode waveguide section...
Guan-Jun Zhang
(Xi'an Jiaotong University)
06/07/2016, 13:30
Surface flashover in vacuum is a great limitation of electrical and electronic system, since it typically takes place on the surface region of an insulating material at applied electric stress much lower than the bulk breakdown strength of the material. This paper gives a review of surface flashover phenomena of insulators, especially its mechanism and techniques to improve withstanding...
Mr
Can Guo
(Xi'an Jiaotong University)
06/07/2016, 13:30
In recent years, SF6/N2 gas mixtures especially with low SF6 mixing ratio was getting used as insulating medium in gas-insulated equipment for replacing pure SF6 which causes greenhouse effect. For the application of SF6/N2 gas mixtures in power equipment such as GIL, the breakdown characteristics of SF6/N2 gas mixtures in different electric field non-uniformity under lightning impulse were...
Mr
Kai LIU
(Xi’an Jiaotong University)
06/07/2016, 13:30
The detection of gas decomposition products is an effective method to diagnose the partial discharge in SF6 insulated electric power equipment for its anti-interference ability and high sensitivity. However, there inevitably exists trace level of water in the SF6 insulated equipment. In order to study the influence of moisture under low volume fraction (<1350×10-6) on discharge and...
Can Guo
(Xi'an Jiaotong University), Mr
Tao Wen
(State Key Laboratory of Electrical Insulation and Power Equipment, Xi’an Jiaotong University)
06/07/2016, 13:30
Very fast transient overvoltages(VFTOs) generated during the routine operations of disconnector switch in GIS make great threat to the insulation of power equipment such as GIS. So far, the research results of the insulation characteristics of GIS under VFTO have big dispersion and poor comparability for the waveform parameters of VFTO have not been standardized. A generating system of...
Can Guo
(Xi'an Jiaotong University)
06/07/2016, 13:30
The flashover of insulators is a bottleneck for the development of gas insulated transmission line (GIL). The operation experience of GIL shows that metallic particle plays an important role in flashover of the insulator. An experiment platform was established to study the influence of gas pressure on the flashover characteristics of the post insulator in SF6 under negative DC voltage. The...
Ms
Lijuan Gao
(Hebei Provincial Key Laboratory of Power Transmission Equipment Security Defense, North China Electric Power University)
06/07/2016, 13:30
Composite insulators have been widely used in power system due to their perfect anti-flashover characteristics. The external insulation of the composite insulator will inevitably be aging during operation, which will affect the reliability and stability of the power network. Thermally Stimulated Current (TSC) technology has proven to be able to well evaluate aging state of composite insulator....
Dr
Emel Onal
(Istanbul Technical University, Electrical Engineering Dep.)
06/07/2016, 13:30
In this study,effects of frequency to dielectric parameters and problems are investigated.The various dielectrics like paper, acetate, glass, rubber, silicon are used at experiment. Frequencies range is between at 50-400 Hz.Also the thickness of the dielectrics are changed at 2 and 4 mm. The results of the experiments are given as reel and imaginer loss factor, resistance, loss power and loss...
Veda Prakash Gajula
(Institute for Plasma Research)
06/07/2016, 13:30
Liquid dielectric breakdown properties are studied towards the development of efficient intermediate storage devices for pulsed power applications. A Tesla based pulse generator along with suitable voltage (V-dot) and current (self-integrating Rogowski coil) sensors are indigenously developed. The experiments are performed by applying few 100 KV with few tens of nanosecond pulse under uniform...
Kirk Rainwater
(TTU)
06/07/2016, 13:30
Repetitive Pulsed Power Systems, Repetitive Pulsed Magnetics, Accelerators, Beams, High Power Microwaves, and High Power Pulse Antennas
Poster Presentation
This paper presents the electrical and mechanical design considerations of a compact, modular pulse forming network (PFN) based Marx generator used to drive a high-power microwave (HPM) source with a time variant load at 100 Hz. The modular Marx bank is designed to produce an open circuit output voltage of 600 kV from a 50 kV source using twelve stages. Each stage of the Marx was constructed...
Zachary Shaw
(Texas Tech University)
06/07/2016, 13:30
Repetitive Pulsed Power Systems, Repetitive Pulsed Magnetics, Accelerators, Beams, High Power Microwaves, and High Power Pulse Antennas
Poster Presentation
A two antennae, software controllable phased array was built to study the generation and transmission of short, nanosecond, non-periodic pulses. This system allows transmitting a train of properly scaled and time-shifted non-periodic signals to generate received signals with major frequency components adjustable from approximately 600 MHz to 1.5 GHz. The main components in the system include...
Prof.
Pietro Romano
(Palermo University)
06/07/2016, 13:30
The purpose of the present work is to evaluate the dielectric response, in presence of multiple voids, analysing Partial Discharge measurements and simulations. Air voids are simulated inside specimens, one or two vacuoles have been taken into account in different positions and with different diameters, and partial discharges patterns have been traced. The approach combines the known circuit...
Mr
Tonglei Wang
(Xi'an Jiaotong University)
06/07/2016, 13:30
Repetitive Pulsed Power Systems, Repetitive Pulsed Magnetics, Accelerators, Beams, High Power Microwaves, and High Power Pulse Antennas
Poster Presentation
A linear switch array pulse modulator (LSAPM) including gas switches, transmission lines and matched load was proposed to produce a pulse with a L wave band pulse, the frequency of output pulse could be adjusted by changing the length and impedance of transmission line, and interelectrode capacitance. In this paper, an electric circuit model of a 12-stage LSAPM was built and analyzed, and the...
Dejan Bešlija
(Faculty of Electrical Engineering Sarajevo),
Mirza Batalović
(Faculty of Electrical Engineering)
06/07/2016, 13:30
Partial discharges, as their name states, only partialy bridge a small portion of electrical insulation in the form of a tiny electrical arcs, which burn inside the defects that could appear in insulation system. Because of the fact that extruded cable system insulation is very sensitive on partial discharge activities detection vise, partial discharge measurements could be used as a powerful...
Dr
Marek Florkowski
(ABB Corporate Research)
06/07/2016, 13:30
Ubiquitous involvement of power electronics devices in the power conversion applications on various voltage levels makes new challenges for the design of insulation systems. The fast switching processes produces complex stresses and high frequency phenomena interplaying with charge behavior in dielectric insulating materials. The converters and inverters utilize usually the most widely...
Dr
Ramachandra Balaiah
(P.E.S. College of Engineering),
sanjeev kumar
(Sri Siddhartha Institute of Technology)
06/07/2016, 13:30
Corrosion of copper conductors in transformers due to presence of mercaptan sulfur in oil is a problem affecting the paper-oil insulations, potentially leading to failure of transformers. The mercaptan sulfur reacts with the copper conductor and forms copper sulfide on the surface. Copper sulfide also migrates from conductor surface to outer layers of paper and from there it is carried to...
zhen yang
(China Academy of Engineering Physics)
06/07/2016, 13:30
Repetitive Pulsed Power Systems, Repetitive Pulsed Magnetics, Accelerators, Beams, High Power Microwaves, and High Power Pulse Antennas
Poster Presentation
A kind of compact pulsed neutron generators with vacuum arc ion sources are widely used in neutron radiography, elemental analysis and illicit materials detection. Different modifications for the neutron generators developed at Institute of Fluid Physics(IFP)were investigated in this work. In order to increase the monatomic ions composition, a magnetic filed was applied in the plasma expanding...
Kelli Noel
(University of Missouri)
06/07/2016, 13:30
Emerging dielectric materials have been utilized to reduce the size of antennas and advanced pulsed power systems. Metamaterial composites can replace these traditional dielectrics by providing better electromagnetic properties while also being easy to machine into complex shapes. We are presently investigating these metamaterial composites, which have an impedance that can operate at the...
Prof.
Abderrahmane Beroual
(Ecole Centrale de Lyon, University of Lyon, Ampere Lab)
06/07/2016, 13:30
The solid/fluid (gas or liquid) insulating systems are widely used in high voltage equipment (bushings, insulators, switchgears, gas insulating lines, gas circuit breakers, high voltage power transformers, power capacitors …) where they are exposed to different stresses and particularly to discharges phenomena that can develop within the body of insulator or at the solid/fluid interface...
qizheng ye
(Huazhong University of Science and Technolog)
06/07/2016, 13:30
In order to avoid the random of the discharge paths on the polluted insulators, we make use of the capillary to form the arc in the confined space. In the capillary, the salt grains and kaolin powder are used to replace the composition of the polluted layer respectively. The voltage and the current waves of the arcs are recorded, and the photographs are presented. The experimental results...
06/07/2016, 13:30
Repetitive Pulsed Power Systems, Repetitive Pulsed Magnetics, Accelerators, Beams, High Power Microwaves, and High Power Pulse Antennas
Poster Presentation
In recent years, High pulsed power technology has been widely used in industry. In this field, MARX generators based on solid-state devices plays a most significant role during the process of energy charge and storage. This circuit structure has solved many technical problems and improves the level of pulsed power technology. With the development of the solid-state Marx generators, MARX...
Dr
Andrew Benwell
(SLAC)
06/07/2016, 13:30
Repetitive Pulsed Power Systems, Repetitive Pulsed Magnetics, Accelerators, Beams, High Power Microwaves, and High Power Pulse Antennas
Poster Presentation
Building from several years of study, it is determined that the dominant cause of pulse to pulse jitter in LCLS linac modulators is thyratron performance [1]. Without a stabile thyratron, all other sources of jitter are dwarfed. To achieve long term stability in this environment, a highly de-rated off the shelf thyratron was selected to upgrade critical RF stations. After a year of...
Ivan Punanov
(Institute of Electrophysics UB RAS)
06/07/2016, 13:30
Perfluorinated delectric liquids are perspective for using in high-voltage devices because of their chemical stability under electrical discharges. For applications like liquid spark gaps, velocity of breakdown is an important parameter. In this work the results of measurement of velocity of anode-initiated electrical breakdown at 140 kV in perfluorinated liquids of different chemical classes...
Dr
Fermin P Espino-Cortes
(SEPI ESIME Zac IPN)
06/07/2016, 13:30
Many of the failures in rotating electrical machines can have mechanical origin. One of these conditions is the vibration of the windings, something that can occur when the coils become loose in the slot. In medium voltage form-wound coils, a small oscillating movement can lead to the wear by fretting of the conductive armor coating in contact with the stator core wall. Once the conductor...
Mr
Meng Gao
(Xi'an Jiaotong University)
06/07/2016, 13:30
Solid insulation tends to absorb moisture during the operation and maintenance of oil-immersed transformers, which could be dangerous to the insulation especially in dynamic rating conditions.As has been reported, insulation with much moisture could cause bubble effect in turn-to-turn insulation when the load of transformer increases rapidly.
Primarily, this study theoretically analyzed the...
Mr
Dongdong Zhang
(Institute of Electrical Engineering, Chinese Academy of Sciences)
06/07/2016, 13:30
Repetitive Pulsed Power Systems, Repetitive Pulsed Magnetics, Accelerators, Beams, High Power Microwaves, and High Power Pulse Antennas
Poster Presentation
Magnetic Pulse Compression (MPC) system is an important and efficient method to obtain high repetition rate and high voltage output. Novel MPC system which do not contain external demagnetization circuits have broadened the appliance of MPC systems. The novel MPC system mainly use magnetic switches to compress the pulse width. For improving the compression efficiency, we use both saturable...
Mr
Yuxuan Chen
(Auburn University)
06/07/2016, 13:30
Modern electrical power industry with high voltage levels needs the investigation of breakdown characteristics of dielectrics operated at kHz pulse field in partial vacuum. Aerospace industry, like aircraft and space station applications, is also requiring much higher power nowadays. Switched-mode power supplies offer solution to overcome these challenges. Meanwhile, understanding of the...
Mr
Dongdong Zhang
(Institute of Electrical Engineering, Chinese Academy of Sciences)
06/07/2016, 13:30
Surface characteristics of Insulator effect its surface flashover performance obviously, appropriate surface treatment can increase the surface flashover voltage. Ion implantation technology is an effective surface modification tool, it can change the roughness, resistivity and adsorbability on the insulator surface. Polytetrafluoroethylene ( PTFE ) was modified by carbon ion and nitrogen...
Dr
Emel Onal
(Istanbul Technical University)
06/07/2016, 13:30
In this study,time to breakdown and breakdown voltage for GIS (Gas Insulation Systems) are performed.The assessment ofthe insulation parameters such as breakdown voltage and time-tobreakdown is always done by rapid and endurance testing.At non-uniform electrode system, pressure and gas rates like SF6, N2, CO2 are used as various parameters.It is shown how the time-to-breakdown is influenced by...
Yanjie Cui
(Xi'an Jiaotong University)
06/07/2016, 13:30
Insulation paper immersed with transformer oil is used as an electrical insulation medium in transformer for its high breakdown field strength. In the normal operation state of higher voltage power transformers, the defects in insulation medium can cause partial discharge(PD) which do harm to insulation materials, resulting in a shortened life of oil immersed paper. PD activities vary...
Prof.
shirong hao
(Key Laboratory of Pulsed Power, Institute of Fluid Physics, CAEP)
06/07/2016, 13:30
Repetitive Pulsed Power Systems, Repetitive Pulsed Magnetics, Accelerators, Beams, High Power Microwaves, and High Power Pulse Antennas
Poster Presentation
A compact repetitive pulsed power system based on Marx is developed. It consists of a high power repetitive power supply, a repetitive trigger and a Marx generator. By utilizing 10 inverter boost-doubling rectifier circuits to operate in parallel, we design and test a high power repetitive power supply which can transform 30V DC. to 100kV DC and charge a 0.3μF capacitor to 100kV in 150ms；The...
06/07/2016, 13:30
Repetitive Pulsed Power Systems, Repetitive Pulsed Magnetics, Accelerators, Beams, High Power Microwaves, and High Power Pulse Antennas
Poster Presentation
The spallation neutron source (SNS) extraction kicker is a high power 60Hz pulsed system used to eject a proton beam from an accumulator ring and transfer it to the target. The system has 14 blumlein PFN modulators that require timing synchronization and fast rise times, with timing jitter resulting in a modulator potentially firing outside of the ideal target time and reducing transfer...
Martin Paraliev
(PSI)
06/07/2016, 13:30
Repetitive Pulsed Power Systems, Repetitive Pulsed Magnetics, Accelerators, Beams, High Power Microwaves, and High Power Pulse Antennas
Poster Presentation
The development of a fast electron beam switching system for Swiss Free Electron Laser[1] (SwissFEL) is in its final phase. Two high stability resonant kicker magnets followed by a septum should separate two closely spaced electron bunches (28 ns apart) and send them to two separate undulator lines. Extremely high shot-to-shot amplitude stability will ensure minimal shot-to-shot variation of...
Dr
Jason Sanders
(Transient Plasma Systems, Inc.)
06/07/2016, 15:30
Triggered solid state devices capable of holding off more than 1 kV and surging multiple kA of current are increasingly a viable alternative for pulsed power applications that previously required triggered spark gap switches or other devices based on gaseous electronics. For a number of pulsed applications requiring high surge current at low to moderate pulse repetition rates, Thyristor...
Richard Thomas
(Army Research Laboratory)
06/07/2016, 15:30
With the advancement of high voltage silicon carbide insulated- gate bipolar transistors (IGBTs) and metal oxide semiconductor field effect transistors (MOSFETs) with voltage hold-off ratings of 10kV and above and current ratings of 5A and above, possible uses for continuous power applications are being explored. Switching high voltage and high current typically requires a costly test circuit...
Heather O'Brien
(US Army Research Laboratory)
06/07/2016, 15:45
The U. S. Army Research Laboratory has an ongoing program to develop high-voltage silicon carbide (SiC) power thyristors for future Army pulsed power systems. Previously, these SiC thyristors were switched at relatively wide pulse widths to evaluate high-current capability for single pulse events. More recent evaluations investigated minimum turn-on delay and dI/dt limitations while switching...
Elena Bankowski
(US Army TARDEC)
06/07/2016, 16:00
In an era when vehicle weight is very important to mission success, non-traditional technology must be developed to provide protection without adding parasitic weight to a vehicle, such as added by heavy armor packages. Electromagnetic Armor (EMA) is one possible technology that may accomplish the goal of achieving lighter weight with equal or greater protection levels. EMA is a system that...
Mr
Wei REN
(Old Dominion University)
06/07/2016, 16:00
Photoconductive semiconductor switch (PCSS) is of interest to the high voltage, pulsed power technology and their applications due to its excellent properties of high hold-off voltage, fast response time, low jitter and robust stability. It is known that optical switches have advantages in electrical insulation and flexibility over electrical switches especially for high voltage pulsed power...
Cheng Zhang
(Institute of Electrical Engineering, Chinese Academy of Science)
06/07/2016, 16:15
Runaway electron beams play the dominant role in the process of nanosecond pulse discharges, which cannot be fully explained by traditional discharge theories and attracted continuous attentions. In this paper, a new collection device for runaway electrons in nanosecond pulse discharges based on faraday cup was investigated. A VPG-30-200 pulse generator was used to excite discharges and...
Animesh Chowdhury
(Texas Tech University)
06/07/2016, 16:15
The importance of non-local effects in impact ionization has been long recognized, particularly in connection with breakdown in gases, where Crooke's dark space and glow striations provide classic examples. The main point is that impact ionization is the consequence of electrons drifting down a potential gradient (i.e., in the presence of a spatial electric field) pick up energy E and can...
Dr
Lee Rashkin
(Sandia National Laboratories)
06/07/2016, 16:30
With the next generation of semiconductor materials in development, significant strides in the Size, Weight, and Power (SWaP) characteristics of power conversion systems are presently underway. In particular, much of the improvement in Wide-Bandgap (WBG) and Ultra-Wide-Bandgap (UWBG) device efficiencies and power densities are realized through higher voltage, higher frequency, and higher...
Dr
Pavel Rodin
(Ioffe Institute)
06/07/2016, 16:45
Silicon avalanche sharperning (SAS) diodes are capable to form kilovolt voltage ramps with 100 ps risetime for pulse power applications [1-3]. Physics of these devices still remains vague and, as a result, design of the respective semiconductor structures is up to now purely empirical. Here we present the results of comparative study of specially designed and manufactured SAS structures with...
Mr
Fan Yang
(State Key Laboratory of Electrical Insulation and Power Equipment)
06/07/2016, 16:45
The reliable running of the transformers are extremely important for the electric system. However, during operating the transformers will inevitably suffers the various impacts, such as short-circuit current and mechanical vibrate. It will lead to permanent deformation, for example warping, shifting and bulge of the windings, within a power transformer. If cannot be detected on time, the...
Dr
Dan Schweickart
(Air Force Research Laboratory-WPAFB)
06/07/2016, 17:15
Electrical and electronic equipment used in aerospace applications must be designed to operate over a wide range of environmental conditions that include variations in pressure, temperature, and humidity. Electrical power systems for advanced aircraft utilize voltages well above the traditional levels of 12 to 42 Vdc and 115/200 Vac, 400 Hz. Current airborne systems can contain 270 Vdc, and...
Richard Nuccitelli
(Pulse Biosciences)
07/07/2016, 08:15
Oral Presentation
Mr
AMIT PATEL
(ITER-India , Institute for Plasma Research)
07/07/2016, 10:00
High Voltage Power Supply (HVPS) based on PSM (Pulse Step Modulation) topology has already demonstrated its ability for broadcast transmitters, accelerators of RF source, neutral beam injectors. Typical IC RF system composed of cascaded connection of Driver stage and End stage would need two power supplies. A novel concept of tapping two outputs from single PSM based HVPS is attempted for the...
Allen Garner
(Purdue University)
07/07/2016, 10:00
Conventional biomedical applications of electric pulse (EP) stimulation utilize conductive coupling, where the electrodes directly contact the biological sample; however, this may contaminate the sample due to ion release from the electrodes. One such application involves activating platelets ex-vivo to create gels for wound treatment without traditional biochemical activators that may induce...
Sebastian Blume
(ETH Zürich)
07/07/2016, 10:15
A new type of particle collider in the tera-electron-volt (TeV) energy range, the Compact Linear Collider (CLIC), is currently investigated at CERN [1]. In CLIC each klystron is supplied by a separate pulse modulator, which is able to provide 29 MW of pulse energy at a repetition rate of 50 Hz. This energy corresponds to an average continuous power of 210 kW. The 180 kV pulse is generated by a...
Alexander Pokryvailo
(Spellman High Voltage Electronics Corp.)
07/07/2016, 10:30
Energy-dosing (ED) topology was shown to be effective for capacitor charging and long- flat-top pulse generation (see [1], [2] and their bibliography for examples of implementation and for the theory of operation). The inherent advantages for these applications are zero-current switching and excellent predictability following from the ED principle of operation. As the term ED implies, the...
Jason Castle
(GE Global Research)
07/07/2016, 10:45
Electric pulse (EP) treatment of biological cells commonly use conductive coupling, where the electrodes make direct contact with the biological sample. Alternatively, one may use capacitive coupling, where air or a dielectric separates the electrodes from the sample, to mitigate the disadvantages of conductive coupling, such as contamination from the electrodes. One critical difference is...
Mr
Jinyu Li
(Xi'an Jiaotong University)
07/07/2016, 11:00
In a HVDC converter station, filter capacitors，specifically the can-type capacitors, are the main noise sources after transformers and reactors. It is necessary to investigate the filter capacitor vibration and noise reduction measure. Capacitor current contains fundamental and high frequency harmonics, which cause high-frequency alternating forces on the internal capacitor element, lead to...
Andras Kuthi
(University of Southern California)
07/07/2016, 11:15
A high power, high repetition rate, fast capacitor charging circuit is presented. The circuit uses four SiC MOSFET switches in parallel in a modified boost converter configuration. Switching losses, already reduced due to the fast switching characteristics of the SiC devices are further mitigated by an auxiliary switch enforcing zero voltage turn-on of the main switches. The charging circuit...
Prof.
Chenguo Yao
(Chongqing University),
Yajun Zhao
(Chongqing University)
07/07/2016, 11:15
Muscle contraction and the non-uniform distribution have become the key obstacles which restrict the development of the irreversible electroporation in clinical application. To solve these two issues, a novel type of pulses called high-frequency composite pulses was proposed by our group. The killing effect and the thermal effect were investigated by our homemade pulse generator. The...
Anand Vadlamani
(Purdue University)
07/07/2016, 11:30
While electric pulses (EPs) can control cell population in vitro [1], the ability to specifically predict the types of cells (dividing or resting) targeted and optimize the EP parameters remain critical challenges for potential cancer treatment applications. Mathematical models of cancer cell population dynamics based on coupled differential equations can predict the transition of cells...
Prof.
Yasushi Minamitani
(Yamagata University)
07/07/2016, 11:45
Nanosecond and sub-nanosecond high voltage pulses can provide new applications. A cancer treatment by an ultra-short pulse high electric field is one of them. High power pulsed electromagnetic wave has been proposed to apply the high electric field for that treatment [1]. Therefore we are developing a high power burst pulse electromagnetic wave generator for bioelectrics application [2]. In...
Dr
Tom Huiskamp
(Eindhoven University of Tehcnology)
07/07/2016, 13:30
Biological, Medical, and Environmental Applications of Power Modulators
Poster Presentation
In this contribution, we present a 15-stage, avalanche transistor Marx generator using inexpensive 2N5551 transistors. It can be used in low-power biomedical, environmental and food applications where compact circuits to generate high-voltage pulses are required. We characterized the avalanche transistors and built a test setup with 15 stages which provides 1.3-kV pulses into a 50 Ohm load and...
Peter Norgard
(University of Missouri)
07/07/2016, 13:30
Power Electronics, Power Supplies, Prime Power, Rotating Machines, and Energy Converters
Poster Presentation
Piezoelectric transformer-based power converters are ideally suited for uses in applications where compact form factor and high voltage isolation are major considerations. Piezoelectric transformers are resonant electromechanical devices that use mechanical vibrations to induce polarization throughout the bulk of their constituent material. Two types of piezoelectric transformer, one type...
Prof.
Claudio Motta
(University of Sao Paulo)
07/07/2016, 13:30
Power Electronics, Power Supplies, Prime Power, Rotating Machines, and Energy Converters
Poster Presentation
In this paper, a control system for an isolated LLC resonant DC-DC converter is proposed to regulate the high voltage output level. The converter uses a single stage and it is based on a full bridge structure using IGBTs as switching devices. The output stage of the DC-DC converter is assembled using series-connected lower voltage modules. The proposed topology is based on the current-fed...
Mr
Knud Dahlerup-Petersen
(CERN)
07/07/2016, 13:30
The steadily increasing demand from the particle physics community for higher energies and higher integrated luminosity has reinforced the need for new accelerator equipment, often breaking with conventional technologies. One of the fields where new and innovative engineering is required and where interesting developments are on-going, is the domain of fast switching of high DC currents, such...
Davide Aguglia
(CERN),
Xavier Abel Bonnin
(CERN)
07/07/2016, 13:30
The energy upgrade of existing particle accelerators, and requests for more cost-effective solutions in new large scale facilities, leads to the need of more and more compact high voltage power converters for power amplifiers. Combining this with the increasing needs in terms of reliability, modularity and redundancy (availability of large accelerators), results in challenging power converter...
Prof.
kefu Liu
(Fudan University)
07/07/2016, 13:30
Nowadays, it is important to improve the power efficiency with the growing variety of environmental, biological, medical, and especially for homogeneous dielectric barrier discharges (DBD) industry application using a repetitive high-voltage solid-state Marx generator. However, most solid-state pulse generators are action at hard switching on or off, such as a huge current for the DBD load,...
Mr
Lingyu Gong
(Chongqing University)
07/07/2016, 13:30
Biological, Medical, and Environmental Applications of Power Modulators
Poster Presentation
Irreversible electroporation (IRE) is a biophysical process in which electric fields applied across a cell cause extensive or permanent permeabilization of the cell membrane, which eventually leads to cell death. It has shown significant advantages in ablating prostatic tissue, such as rapid lesion creation, rapid lesion resolution, sparing of structures such as vessels, nerves and urethra for...
Prof.
GE LI
(Institute of Plasma physics, Chinese Academy of Sciences)
07/07/2016, 13:30
Power Electronics, Power Supplies, Prime Power, Rotating Machines, and Energy Converters
Poster Presentation
Abstract—This paper studies an inductor-capacitor-inductor(LCL)voltage-source converter(VSC) which can be implemented by zero current switches(ZCS). The ZCS has potential applications in improving the efficiency of high-voltage high-current system, such as servo power supplies at over 10 MW for the compressed plasma suggested in[Li, G. High-gain high-field fusion plasma,Scientific Reports,...
Dr
youcheng wu
(insititute of fluid physics)
07/07/2016, 13:30
As a primary power supply, the explosive-driven ferroelectric generator (EDFEG) has high energy density, can autonomously produce more than 100 kV high voltage with a few microseconds pulse duration, but hundreds nanoseconds rising time. In our experiments it can output the current of over 10 kA on an inductance load of about 2μH. It is believed that EDFEG should be an ideal primary supply for...
Mrs
Xiaoyun Sun
(School of Communication and Information Engineering , Xi’an University of Science and Technology)
07/07/2016, 13:30
Power Electronics, Power Supplies, Prime Power, Rotating Machines, and Energy Converters
Poster Presentation
The voltage source converter is an important part of VSC-HVDC (Voltage source converter based high voltage direct current) system which has low over-voltage and over current bearing ability and thus prone to various faults. In this paper, based on the VSC-HVDC system PSCAD/EMTDC simulation model, the mathematical model of DC voltage and current fluctuation component caused by AC single-phase...
Kyle Thompson
(University at Buffalo)
07/07/2016, 13:30
Biological, Medical, and Environmental Applications of Power Modulators
Poster Presentation
Nonthermal plasma is an emerging treatment method of Melanoma cancer cells with promising results. Implementation of nonthermal plasma for Melanoma cancer cell treatment is hindered by the need for precise setup and constant manual reconfiguration. This work presents a new automated approach for the generation of nonthermal plasma that can maintain a stable plume with no user intervention,...
Mr
C.B. Sumod Sumod
(Institute for plasma research), Mr
Dipal Thakkar Dipal
(Institute for plasma research), Mr
L.N. Gupta Laxminarayan
(Institute for plasma research), Mr
Pareshkumar Pareshkumar
(Institute for plasma research), Mr
U.K.Baruah Ujjwal
(Institute for plasma research)
07/07/2016, 13:30
Power Electronics, Power Supplies, Prime Power, Rotating Machines, and Energy Converters
Poster Presentation
Regulated high voltage power supplies (RHVPS) at an 80kV/10 MW level are designed, developed in-house and patented by Institute for plasma research (IPR) and are being utilized for different heating systems within steady state tokomak (SST-1). These are main power sources for NBI, LHCD, ECRH and ICRH heating systems for running an SST-1.
In this presentation, different subparts of these...
Claus Strowitzki
(Mlase AG)
07/07/2016, 13:30
An IGBT switch together with a blocking diode is normally used for the primary switch in a magnetic pulse compression circuit. In the presented paper a full bridge configuration as a primary switch is proposed. The configuration shows advantages especially for high repletion rate systems. It shows also higher efficacies because no special network is necessary for the reflected energy. The...
Miguel Hinojosa
(Army Research Laboratory)
07/07/2016, 13:30
Silicon carbide (SiC) IGBTs fabricated on wide epitaxial drift regions are desirable for pulsed-power and continuous low-duty cycle power conversion systems due to the high avalanche breakdown voltages as well as the ability to switch high currents at fast repetition rates. For mobile platforms, the use of SiC-based electronics can be advantageous as it allows for: 1) a significant reduction...
Mr
Argenis Bilbao
(Texas Tech University), Dr
Michael Giesselmann
(Texas Tech University)
07/07/2016, 13:30
Power Electronics, Power Supplies, Prime Power, Rotating Machines, and Energy Converters
Poster Presentation
Rapid capacitor chargers are typically used to charge a bank of capacitors with the purpose of discharging it into a pulsed power load [1,3]. Previous research shows that the charging voltage of the load can be accurately calculated in real-time using microcontroller software algorithms [2]. The objective of this paper is to report a hardware based approach to measure the charge transfer into...
Sewan Heo
(Electronics and Telecommunications Research Institute)
07/07/2016, 13:30
Power Electronics, Power Supplies, Prime Power, Rotating Machines, and Energy Converters
Poster Presentation
This paper proposes a closed transition transfer switch (CTTS) based on a photovoltaic inverter which is capable of transition between grid-connected and island modes. The proposed system consists of the CTTS, utility grid and photovoltaic inverter connected to each input, respectively, an active load with power factor correction, and a system controller. According to the grid condition, the...
07/07/2016, 13:30
Power Electronics, Power Supplies, Prime Power, Rotating Machines, and Energy Converters
Poster Presentation
Silicon carbide power semiconductor devices are capable of increasing the power density of power electronics systems[1,2]. In recent years, devices rated to block voltages up to 20 kV have been demonstrated[3]. These research grade devices must be fully characterized to determine operating characteristics as well as failure mechanisms. The purpose of this paper is to demonstrate the continuous...
Pavel Rodin
(Ioffe Institute, Russian Academy of Sciences)
07/07/2016, 13:30
Delayed avalanche breakdown of reversely biased high voltage Si diodes, known as Silicon Avalanche Shapers (SAS), leads to ~100 ps switching and has found important pulse power applications. The widely accepted model of delaye d breakdown is a TRAPATT-like ionizing wave that propagates faster than the saturated drift velocity vs. and leaves dense electron-hole plasma behind (see Ref. 1 and...
Mr
Michael Kempkes
(Diversified Technologies, Inc.)
07/07/2016, 13:30
Diversified Technologies, Inc. (DTI), in partnership with SigmaPhi Electronics (SPE) has built three long pulse solid-state klystron transmitters to meet spallation source requirements. Two of the three units are installed at CEA Saclay and the National Institute of Nuclear and Particle Physics (IN2P3), where they will be used as test stands for the European Spallation Source (ESS).
The...
Hong-Je Ryoo
(Chung-Ang University)
07/07/2016, 13:30
This paper describes the design of a high performance solid-state pulsed power modulator for long pulse applications. Output specifications of the proposed modulator are as follows: variable output pulse voltage, 1-40 kV; width, 1-300 us; pulse repetition rate, 1-200 pps; and average output power, 50 kW. Based on the structure of solid-state Marx modulator, the proposed modulator mainly...
129.
Design of High-voltage Nanosecond Fast Repetitive Pulse Generator Based on Avalanche Transistor
07/07/2016, 13:30
Repetitive Pulsed Power Systems, Repetitive Pulsed Magnetics, Accelerators, Beams, High Power Microwaves, and High Power Pulse Antennas
Poster Presentation
A high voltage, nanosecond pulse generator is designed to get the high resolution and accurate results in Pulse electro acoustic (PEA) equipment to measure space charge test. There’s more and more requirement for fast rise time pulse generator especially with high repetition frequency and high voltage. Several technologies are being used for generation of nanosecond pulses such as spark gas,...
Dr
Hoon Heo
(Pohang Accelerator Laboratory), Dr
SangHoon Nam
(Pohang Accelerator Laboratory),
SungChul Kim
(Pohang Accelerator Laboratory)
07/07/2016, 13:30
This paper proposes a compact high-voltage pulse power supply consist of interleaved capacitor charging power supply (CCPS) with a series resonant converter (SRC) to drive cathode of Magnetron Injection Gun (MIG). Requirement specifications are -40 kV, -7A(280 kW) and few seconds continuous output with less than 1ms the rising and falling time and lower than ± 1% the ripple stability of output...
Keita Yasu
(Yamagata university)
07/07/2016, 13:30
Biological, Medical, and Environmental Applications of Power Modulators
Poster Presentation
Nanosecond and sub-nanosecond high voltage pulses can provide new biological applications. A cancer treatment by an ultra-short pulse high electric field is one of them. High power pulsed electromagnetic wave has been proposed to apply the high electric field for that treatment [1]. This work focuses on the design of a compact high power pulsed electromagnetic wave generator using a nanosecond...
Mr
William Leighty
(The Leighty Foundation)
07/07/2016, 13:30
Biological, Medical, and Environmental Applications of Power Modulators
Poster Presentation
The answer to Humanity's energy emergency is beneath our feet: ubiquitous, abundant, baseload geothermal heat -is - if only we could afford to bore deep enough to reach it, anywhere on Earth. The average geothermal gradient, anywhere on Earth, is about 30 C per km depth. At 9 km, at almost 300 C, with enough contact area, abundant energy may be extracted, forever, if the borehole system is...
Martin Sack
(Karlsruhe Institute of Technology)
07/07/2016, 13:30
For a device for treatment of food by pulsed electric fields a modular semiconductor-based Marx generator has been designed. Each stage comprises a parallel configuration of inexpensive IGBT switches forming together the pulse switch. A control signal allows synchonized switching of the stages. It is distributed to the stages inductively via ferrite core transformers. Separate gate drivers...
Mr
Koki Saito
(Yamagata University)
07/07/2016, 13:30
Biological, Medical, and Environmental Applications of Power Modulators
Poster Presentation
We have investigated sterilization of packaging foods. In sterilization methods of the packaging foods, there is pulsed discharge sterilization and high frequency pulsed electric field sterilization[1][2]. The pulsed discharge sterilization is suitable for solid fresh foods. The high frequency pulsed electric field sterilization is suitable for liquid fresh foods. However, many liquid fresh...
Mr
Dmitriy Bochkov
(Pulsed Technologies ltd.), Dr
Victor Bochkov
(Pulsed Technologies ltd.)
07/07/2016, 13:30
The problem of plasma structure stabilization recently has received considerable attention for low and high temperature plasma applications, in particular in fusion experiments, and in order to cope with the problem different special configurations of current and magnetic systems are developed and deployed. However, the available solutions require construction of complex magnetic fields and...
Mr
Mitsuru Morimoto
(Tokushima University)
07/07/2016, 13:30
Biological, Medical, and Environmental Applications of Power Modulators
Poster Presentation
Recently, water pollution has come to an issue around the world. As a new water treatment technology, advanced oxidation processes (AOPs) has attracted attention. We have studied an efficient wastewater treatment using nanosecond pulsed power as one of the AOPs. In this system, effects of not only the active species but also electric discharges are expected. A nonionic surfactant was selected...
Dr
Yawei Li
(Electric Power Research Institute of State Grid Sichuan Electric Power Company)
07/07/2016, 13:30
Biological, Medical, and Environmental Applications of Power Modulators
Poster Presentation
In the humid areas like Sichuan Province of southern China, algae often grows abundantly on the surface of porcelain insulators covered with room temperature vulcanized silicone rubber (RTV), which may increase the risk of pollution flashover. In order to solve the potential threat to the safety of power grid, study on the growth conditions, the species, the growth habit and the distribution...
07/07/2016, 13:30
Biological, Medical, and Environmental Applications of Power Modulators
Poster Presentation
A single 2.5 or 5.0 V/cm electric pulse (EP) of 90 s duration induced changes in cardiomyocyte differentiation, increasing the number of beating foci with the higher field strength increasing intracellular reactive oxygen species [1]. Similar field strengths can also induce cytoskeletal stresses that facilitate manipulation of osteoblasts and mesenchymal stem cells [2]. While effective,...
07/07/2016, 13:30
Biological, Medical, and Environmental Applications of Power Modulators
Poster Presentation
Variations in the electrical properties of biological cells elucidate how intense electric pulses (EPs) can alter mammalian cell structure, intracellular organelles, and plasma membrane integrity [1-2]. Time domain dielectric spectroscopy (TDDS) can characterize these changes by measuring the electrical properties of the plasma membrane, cytoplasm, nuclear envelope, and nucleoplasm [1-2]....
Allen Garner
(Purdue University)
07/07/2016, 13:30
Biological, Medical, and Environmental Applications of Power Modulators
Poster Presentation
A desire to limit CO2 emissions and overall energy demands has motivated the search for alternative energy sources. The first approach involved the development of plant biofuels for a greener, renewable solution; however, crop-based biofuels grew unpopular because they were expensive and used foodstuffs. Using microalgae can avoid these issues and are now an increasingly popular source of...
Adel El Shahat
(Georgia Southern University)
07/07/2016, 13:30
Power Electronics, Power Supplies, Prime Power, Rotating Machines, and Energy Converters
Poster Presentation
When renewable energy introduces the term “energy storage” automatically comes. Because electric power is consumed the instant it is produced so electrical energy storage technologies are designed to absorb electrical energy directly and release it as electrical energy (act like a generator) at a later time. To mitigate the problem of intermittency of renewable energy as well as to improve the...
Jason M. Sanders
(Transient Plasma Systems),
Stanislav Soloviev
(GE Global Research)
07/07/2016, 13:30
Silicon Carbide is a very promising material for high pulsed power and high frequency devices with ultra-fast switching requirements; however, despite SiC devices showing encouraging results that may qualify them as ultrafast switches in high power pulse systems, many more design and processing issues need to be addressed. Specifically, a premature surface breakdown at SiC DSRD (SOS) chip...
Emily Hirsch
(Texas Tech University)
07/07/2016, 13:30
Silicon Carbide (SiC) is a leading wide bandgap semiconductor for increasing the power density of high power applications. This paper overviews the long term reliability and safe operating area of 15 kV SiC PiN diodes during pulsed current conditions. An automated system is used to stress these devices with ultra-high current pulses and monitor degradation with in-system characterization. The...
Mr
Takahiro Sadamatsu
(Nagasaki university)
07/07/2016, 13:30
Biological, Medical, and Environmental Applications of Power Modulators
Poster Presentation
In recent years, surface discharge on water has received attention as one of the wastewater treatment method. Discharge plasma can produce OH radicals without secondary product, and the electrode setup of the surface discharge allows a reduction in water pollution from electrode by erosion. Generally, the heating of discharge channel is suppressed by application of short pulse width voltage....
Paul Gregor Nikolic
(RWTH Aachen University)
07/07/2016, 13:30
Power Electronics, Power Supplies, Prime Power, Rotating Machines, and Energy Converters
Poster Presentation
The replacement of the strong greenhouse gas sulphur hexafluoride and the emerging installation of multi-terminal HVDC grids also lead to significantly changing requirements for future switching devices. On the one hand, the application of alternative insulating and arc quenching gases requires higher opening velocities of the contacts to compensate the reduced dielectric strength of these...
Ms
Ke Yue
(State Key Laboratory of Electrical Insulation and Power Equipment, Xi’an Jiaotong University, Xi’an 710049, Shaanxi Province, China)
07/07/2016, 13:30
Power Electronics, Power Supplies, Prime Power, Rotating Machines, and Energy Converters
Poster Presentation
The high power thyristor is the basic unit in HVDC converter valve, and its transient performance has a tremendous influence on the reliability, stability of the whole power system and designs of thyristor control unit. For this reason, each thyristor needs to be tested routinely before the operation of the power system. However, there is no specification for the routine test of thyristor...
Mr
chenguo yao
(chongqing university),
shoulong dong
(Chongqing University), Mr
yajun zhao
(chongqing university)
07/07/2016, 13:30
Biological, Medical, and Environmental Applications of Power Modulators
Poster Presentation
Irreversible electroporation (IRE) is a new method for tissue ablation. An exposure of a cell to a sufficiently high external electric field results in irreversible electroporation. The electrical conductivity of the cells will change during the irreversible electroporation, and the impedance of the tissue will also change. This paper uses various tissues of New Zealand white rabbits for...
Mr
Michael Kempkes
(Diversified Technologies, Inc.)
07/07/2016, 13:30
Power Electronics, Power Supplies, Prime Power, Rotating Machines, and Energy Converters
Poster Presentation
Fast solid-state switching is an enabling technology for MVDC (Medium Voltage Direct Current) systems. Series- and parallel-connected IGBTs (insulate gate bipolar transistors) enable thousands of volts (up to 50 kV+) to switch hundreds of amps (up to 1000 A+) in less than 1 microsecond. These devices have characteristic power density of 200 MVA/m3 for a typical device rating of 4.5 kV and...
Mr
Isaac Cohen
(University of Texas at Arlington)
07/07/2016, 13:30
Power Electronics, Power Supplies, Prime Power, Rotating Machines, and Energy Converters
Poster Presentation
As the Navy transitions to a more electrical fleet, the electrical architectures must adapt to the changing load profiles. With the introduction of electrical propulsion, new types of electrical energy based weapons, and energy storage backups for these devices, load profiles have become higher power and more transient than ever seen before – especially during directed energy weapon operation....
Clay Nunnally
(APELC)
07/07/2016, 13:30
Power Electronics, Power Supplies, Prime Power, Rotating Machines, and Energy Converters
Poster Presentation
High-potential DC power distribution systems such as those found in aeronautics are at risk to failures different from AC and low-voltage DC systems. Detection and mitigation of such failures, in conjunction with prevention, are of importance for not only the aerospace field but also to electric vehicles, solar power systems, and data centers.
In collaboration with the Air Force Research...
Mr
Hassan El-Kishky
(The University of Texas at Tyler)
07/07/2016, 13:30
Power Electronics, Power Supplies, Prime Power, Rotating Machines, and Energy Converters
Poster Presentation
Pulsed power loads such as electromagnetic guns, electron lasers, high-power radars, electromagnetic launch and recovery systems can cause significant stress on aircraft electric power systems. In this paper, the performance characteristics of a fully integrated advanced aircraft electric power system (AAEPS) with a hybrid fuel cell-battery auxiliary power unit and connected pulsed power loads...
Muhammad Majid Hussain
(Glasgow Caledonian University)
07/07/2016, 13:30
The present work is an experimental work to investigate the impact of wind speed on pollution accumulation rate on outdoor insulators near coastal area. The outdoor insulators near shoreline are suffered from rapid saline accumulation due to heavy wind coming from the seashore, which is more dangerous in foggy weather conditions. A method was developed in laboratory to find the impact of wind...
Mr
David Dodson
(University of Texas at Arlington)
07/07/2016, 13:30
Power Electronics, Power Supplies, Prime Power, Rotating Machines, and Energy Converters
Poster Presentation
The United States Navy is transitioning its fleet to utilize more high power electrical loads. Many of these loads are not only higher power than previously seen aboard ships, but also operate in a transient nature with loads that are much more capacitive than previously seen. In this transition, efficiency in power conversion has become more important than ever before. Converting AC power to...
Mr
Tonglei Wang
(Xi'an Jiaotong University)
07/07/2016, 13:30
A transient optical diagnostic system for studying the discharge characteristics of the particle beam triggered gas switch was built, the temporal and spatial evolution of particle beam was observed in real time, the velocity curves of particle beam under different gas pressures were obtained. And at the lowest working coefficient of 47.2%, the discharge processes of the two spark gaps were...
Ms
SHUYUN TIAN
(HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY)
07/07/2016, 13:30
Pulse power thyristor has been widely used in pulsed power system for its numerous advantages, such as good controllability, large through-flow capacity and high repetition frequency. To study the device’s electrical characteristics and the circuit transient process, a marco model of pulse power thyristor applying to MATLAB software platform was established in this paper,based on research of...
Ze Zhang
(Texas Tech University)
07/07/2016, 13:30
Biological, Medical, and Environmental Applications of Power Modulators
Poster Presentation
Applications of electric pulses is known to create nanopores at the membranes of biological cells, which can then modulate the intracellular conductivity and permeabilization in a controlled manner. Applications of such membrane poration lies in the field of biomedical engineering, drug/gene delivery, cell fusion, and electrochemotherapy for cancer treatment. However, in addition to external...
Dr
Chenguo Yao
(Chongqing University), Ms
Hongmei Liu
(Chongqing University)
07/07/2016, 13:30
Biological, Medical, and Environmental Applications of Power Modulators
Poster Presentation
Pulsed electric fields have recently been the focus of considerable attention because of their potential application in biomedicine. However, their practical clinical applications are limited by poor understanding of the interaction mechanism between pulsed electric fields and cells, particularly in different effect of electroporation exposed in different parameters, and the optimal pulsed...
Adel El Shahat
(Georgia Southern University)
07/07/2016, 13:30
Power Electronics, Power Supplies, Prime Power, Rotating Machines, and Energy Converters
Poster Presentation
This paper proposes reviewing the recent advances and new technologies for NanoGrids systems. It aims to make a point of view on the Nano-grid as a future promising electric power system grid. It tries to reply some questions like what are the Nano-grids, how they are related to smart-grids and what is the difference between them and Micro-grids. Microgrids are building blocks of a Smart-grid....
Mr
Hadi Ebrahimi
(The University of Texas at Tyler)
07/07/2016, 13:30
The growing complexity and nonlinear structure of modern aircraft electric power systems with extensive nonlinear loading made available state-space averaging models inadequate for accurate analysis and characterization of such systems. In this paper, the Generalized State-Space Averaging (GSSA) model is applied for the analysis, control, and characterization of SPWM twelve pulse inverter in...
Mr
Kouji Omatsu
(Tokushima University)
07/07/2016, 13:30
Biological, Medical, and Environmental Applications of Power Modulators
Poster Presentation
In recent years, environmental problems as acid rain and air pollution have become more serious. Nitrogen oxides (NOx) are one of causative agents of them. Currently, NOx treatment technology has been established, but they have some disadvantages as high cost and large-sized equipment. Because the NOx treatment equipment did not become widespread, there is a need in the art for a...
Mr
Huarong Li
(Institute of Plasma Physics Chinese Academy of Sciences)
07/07/2016, 13:30
Power Electronics, Power Supplies, Prime Power, Rotating Machines, and Energy Converters
Poster Presentation
Abstract-This paper suggests a four quadrants converter System for tokamak CPSS, such as ITER-like CFETR. The converter is composed of insulated-gate bipolar transistor (IGBT) and an internal passive LCL circuit. The resonant frequency characteristics of the LCL circuit are analyzed, and a parameter design method on the base of voltage stepping and the current regulation under extreme...
Dr
Adel El Shahat
(Georgia Southern University)
07/07/2016, 13:30
Power Electronics, Power Supplies, Prime Power, Rotating Machines, and Energy Converters
Poster Presentation
This paper proposes design and implementation of a small scale micro-hydro power electrical system capable of supplying a house near flowing water with sustainable power. A small scale hydropower turbine system and a larger system using a DC power supply generator are built. Real small hydro-generator associated with electric generator is used with a simple load, rectifier, and dc-dc...
Mr
Ross Petrella
(Old Dominion University)
07/07/2016, 13:30
Biological, Medical, and Environmental Applications of Power Modulators
Poster Presentation
Picosecond pulsed electric fields in the range of 20 kV/cm can affect electrically excitable cells such as neurons. A noninvasive applicator in the form of a wideband dielectric rod antenna was designed to achieve these ends in the brain. The antenna consists of three sections (a conical wave launcher, cylindrical waveguide, and conical emitting section). In a simulation utilizing a human...
07/07/2016, 13:30
Biological, Medical, and Environmental Applications of Power Modulators
Poster Presentation
We demonstrate that application of the pulsed power is an indispensable condition for realization of microbiological decontamination in an energy-efficient (respectively, non-thermal) manner.
There appear two distinctive (characteristic) cases of microbiological decontamination: the case of non-selective, tough sterilization, and the case of selective, obligatory non-thermal, chemically...
Prof.
Kefu Liu
(Fudan University)
07/07/2016, 13:30
Repetitive Pulsed Power Systems, Repetitive Pulsed Magnetics, Accelerators, Beams, High Power Microwaves, and High Power Pulse Antennas
Poster Presentation
All-solid-state Marx generator is mature approach to obtain repetitive high voltage pulses and many topologies have been proposed. However, due to limited rated voltage of semiconductor switches, a large amount of switches is required. Too much switches, in addition with high repetition rate, lead to severe stray parameters and heat dissipation. It increases the difficulty of structure design...
Mr
chenguo yao
(chongqing university),
shoulong dong
(Chongqing University)
07/07/2016, 13:30
Biological, Medical, and Environmental Applications of Power Modulators
Poster Presentation
The irreversible electroporation has the advantages of non-thermal, minimally invasive and visualization for the ablation of tumors which has been research and applied extensively. The technique involves delivering a series of unipolar electric pulses to permanently destabilize the plasma membrane of cancer cells through an increase in transmembrane potential, which leads to the development of...
Tao Shao
(Institute of Electrical Engineering, Chinese Academy of Science),
chengyan ren
07/07/2016, 13:30
Power Electronics, Power Supplies, Prime Power, Rotating Machines, and Energy Converters
Poster Presentation
The cascade type high voltage pulse power supply with the magnetic isolation is used to solve the problem of floating power supply of each cascade unit. Its structure is compact and the trigger mode is simple and reliable. Using the trigger mode of magnetic coupling isolation can increase the tail branch in each concatenation unit simply and conveniently, reduce the falling edge of output high...
Prof.
CHONG LIU
(008601064102268)
07/07/2016, 13:30
Power Electronics, Power Supplies, Prime Power, Rotating Machines, and Energy Converters
Poster Presentation
Power IGBT module is widely used in high power conversion applications in various fields because of the advantages of high voltage and high current applications. In order to avoid the influence of temperature rise to the device measurement, pulse test method is widely used to test its static and dynamic parameters, So there are single high pulse voltage source and single pulse high current...
Mr
Jinchang Hu
(Huazhong University of Science and Technology)
07/07/2016, 13:30
Thyristor has been widely used in HVDC transmission system and pulsed power system.The thyristor will be damaged if transient temperature rise of valve plate is too high ,and it will result in the system failure.The relationship between peak value of pulse current flowed the circuit and maximum transient temperature rise of thyristor in pulsed power system was investigated in this ...
Dr
Xiu Yao
(University at Buffalo)
07/07/2016, 13:30
Power Electronics, Power Supplies, Prime Power, Rotating Machines, and Energy Converters
Poster Presentation
With the development and implementation of dc based power systems, dc arc fault protection becomes an inevitable challenge for the safe operation in various applications. This paper presents a brief review of dc arc fault modeling and detection methods. The goal is to examine state-of-the-art technologies and to identify future research and development needs of dc arc fault protection in...
Dr
Bejoy Pushpakaran
(Texas Tech University), Dr
Stephen Bayne
(Texas Tech University)
07/07/2016, 13:30
Electro-thermal analysis of SiC power semiconductor devices is crucial for its suitability in high power pulsed application. The relative stability of the threshold voltage and the absence of surface conduction in a Trenched and Implanted Vertical JFET (TIV-VJFET) structure gives it an inherent advantage over SiC MOSFETs especially in high current density pulsed applications like high voltage...
James Schrock
(Texas Tech University)
07/07/2016, 13:30
Silicon carbide Super Gate Turn-OFF (SGTO) thyristors are an advanced technology for increasing the power density of high voltage pulsed power or power electronics. However, the transient characteristics and failure modes of these devices have to be further understood. This paper presents the Silvaco Atlas simulation of a 15 kV SiC SGTO thyristor during extreme pulsed overcurrent conditions....
Dr
Adel El Shahat
(Georgia Southern University)
07/07/2016, 13:30
Power Electronics, Power Supplies, Prime Power, Rotating Machines, and Energy Converters
Poster Presentation
A Nano-grid is a model version of a smart grid with the ability to function as separate power generator. The power electronics converters are playing very important roles in smart homes. So this paper proposes three important converters as the following: Single-Input Multi-Outputs (SIMO) DC-DC Converter, Multi-Inputs Multi-Outputs Converter (MIMO) and Multi-Level Cascaded Inverter (MLCI)...
Max Collins
(Lund University)
07/07/2016, 13:30
The European Spallation Source (Lund, Sweden) is an under construction multi-disciplinary research facility to be based around a Linear Particle Accelerator which is to provide 2.86 ms long proton pulses at 2 GeV at a pulse repetition rate of 14 Hz, representing an average beam power of 5 MW.
To accommodate the requirements of the proton linac, a large number of klystrons driven by power...
Shun Ogura
(Tokushima University)
07/07/2016, 13:30
Biological, Medical, and Environmental Applications of Power Modulators
Poster Presentation
Treatment approach of malignant neoplasm (cancer), which has high probability to death, has been actively studied. Although there are several current cancer therapy as radiation therapy, surgical therapy, and chemotherapy (anticancer drugs), these therapy have some disadvantages such as radiation to patient and critical side effects. The goal of this study was to establish a new cancer...
07/07/2016, 13:30
Biological, Medical, and Environmental Applications of Power Modulators
Poster Presentation
To solve the problems involved in tumor treatment using pulsed electric fields (PEF), we presented a novel tumor treatment method using high-frequency nanosecond pulsed electric fields (nsPEF) modulated by microsecond pulse based on both apoptosis and irreversible electroporation, also aiming at direct killing effects of microsecond pulsed electric fields (μsPEF) and indirect modulating...
Mr
Gert Jan Coelingh
(CERN)
07/07/2016, 13:30
The superconducting magnets, intended for use in the LHC High Luminosity (HL-LHC) project at CERN are based on Nb3Sn technology. Powering of prototypes of such magnets with up to tens of kilo-Amperes are required for detailed studies of the quench behavior, as well as an evaluation of the associated quench protection equipment. For this purpose an ultra-fast energy extraction system is needed ...
Dr
tonghai ding
(Huazhong university of science and technology)
07/07/2016, 13:30
In this paper, a new explosive DC breaker switch, which the electromagnetic forming (EMF) technology is used to burst aluminum cylinder in order to cut off the high DC current, is designed. The switch is upgraded from the explosive DC breaker switch of the Laboratoire National des Champs Magnétiques Intenses in France which a closed aluminum cylinder full of water is destructed by high...
Mr
Haozheng Shi
(Fudan University), Prof.
Kefu Liu
(Fudan University),
jian qiu
(Fudan University)
07/07/2016, 13:30
The output current of a Marx generator will be affected by the value of different loads even though the output voltage has been fixed. A special kind of current pulse generator is needed in experiments and industrial applications, which can generate a current pulse of constant amplitude regardless of the impact that the resistive load fluctuates in a certain range. A novel current pulse...
Prof.
Kefu Liu
(Fudan University)
07/07/2016, 13:30
Power Electronics, Power Supplies, Prime Power, Rotating Machines, and Energy Converters
Poster Presentation
A solid-state dual Marx generator combined a pulse transformer is proposed in this paper, which can obtain a bipolar pulse and increase the output voltage. While, its input current will many times of the ratio of the pulse transformer, which will increase the difficult of the system thermal stress for its compact footprint. The power loss, power efficiency and thermal stress will be studied...
Mr
Michael Kempkes
(Diversified Technologies, Inc.)
07/07/2016, 13:30
Thyratrons in high-power, short-pulse accelerators have a limited lifetime, making it desirable to replace the thyratrons with solid-state devices. One possibility, thyristors, are being developed for this application;, they have not, to date, demonstrated the reliability needed for installation in the short pulse, high peak power RF stations used in many pulsed electron accelerators. An...
Anton Gusev
(Institute of Electrophysics UB RAS)
07/07/2016, 13:30
The process of triggering thyristors by an overvoltage pulse with a short rise time was implemented. Low-frequency commercial thyristors of tablet design with diameters of silicon wafers of 32 to 56 mm and an operating voltage of 2 to 2.4 kV DC were used in the experiments. An external overvoltage pulse was applied across the thyristor main electrodes, which ensured a voltage rise rate from...
Mr
Inhwan Lee
(University at Buffalo)
07/07/2016, 13:30
Power Electronics, Power Supplies, Prime Power, Rotating Machines, and Energy Converters
Poster Presentation
Modular multilevel converter (MMC) has gained tremendous attention in high power applications since its introduction in 2003. It has enabled the usage of IGBT devices for high voltage applications without the need to connect a large number of switches in series. Although mostly adopted in medium voltage drives and high voltage dc transmission converter stations, MMC can be very promising...
Mr
Tomohiro Mori
(Kindai University)
07/07/2016, 13:30
Over the past ten years, a number of studies using the discharge plasma, such as the surface discharge over water, the discharge assisted by bubbling and so on, have performed for the treatment of contaminated water. The aim of these researches is focused on the improvement of the energy efficiency. The input energy supplied into the discharge is used preferentially to produce discharge plasma...
George Chen
(University of Southampton)
07/07/2016, 15:30
Oral Presentation
Davide Aguglia
(CERN)
07/07/2016, 15:30
Oral Presentation
Bucur Novac
(Loughborough University)
08/07/2016, 08:15
Oral Presentation
Roya Nikjoo
(KTH Royal Institute of Technology)
08/07/2016, 10:00
An important signature of degradation is usually linked to the onset of Partial Discharge (PD) activity within the insulation. The change in the PD pattern can concern the insulation degradation level. High voltage transients such as lightning and switching impulses are inevitable phenomena that happen in power systems. They can impose electrical stresses on the insulation system of power...
Dr
N.M. Jordan
(University of Michigan)
08/07/2016, 10:00
The recirculating planar magnetron (RPM) [1] is a crossed-field device that combines the advantages of high-efficiency recirculating devices with the scalability of planar devices. Experiments using the RPM-12a, the first L-band prototype, have successfully produced 150 MW microwave pulses, 50-200 ns in duration, with instantaneous efficiencies of up to 30% at approximately 1 GHz [2]. The...
Mr
Kai Liu
(Xi’an Jiaotong University)
08/07/2016, 10:15
SF6 is widely applied in gas insulated switchgear (GIS) due to its excellent insulating and arcing performance. However, the partial discharge often is caused by some insulation defects because of the production, installation and operation of the GIS. Under partial discharge, The decomposition products including SO2F2, SOF2, SO2, CF4, CS2, will be formed. The types, content and change trend of...
Dr
Rene Vezinet
(CEA, DAM, GRAMAT, F-46500 Gramat)
08/07/2016, 10:30
We describe a very Compact High Power Microwave system which is under development at CEA Gramat.
The electric pulses generation is provided by a compact and innovative 400 kV, 100 Hz Marx PFN. Its specific design provides a very fast rise time and its U shape agrees with severe geometry constraints.
A specific compact 45 kV capacitor charger for the Marx has been developed by...
Mr
THIRUMURUGAN C
(IIT MANDI)
08/07/2016, 10:30
**Purpose/Aim**
We need to understand one of the breakdown mechanisms of transformer dielectrics i.e. partial discharges (PD) in oil-pressboard composite insulation. In this study we conducted a PD experiment. Experimental results may be useful for online condition monitoring of large power transformer.
**Experimental/Modeling methods**
Effect of various impurities (i.e. Moisture in...
Dr
Ramachandra Balaiah
(P.E.S.College of Engineering), Prof.
sanjeev kumar
(Sri Siddhartha Institute of Technology)
08/07/2016, 10:45
Sulphur can be present in mineral insulating oil and can manifest in stable, highly reactive and corrosive form. The corrosive sulphur reacts with the copper conductor in transformer and forms semi conductive copper sulphide at the surface of the copper conductor. The paper insulation used on the copper conductor may get damaged due to copper sulfide deposits which also affect the partial...
Guan-Jun Zhang
(Xi'an Jiaotong University)
08/07/2016, 11:00
Surface flashover in vacuum across dielectrics usually happens in many pulse power devices, high power microwave (HPM), which seriously limits the transmission of HPM. Up to now, Secondary electron emission avalanche (SEEA) model is generally accepted to analyze the phenomena. The mechanism of SEEA is characterized into four continuous steps: (1) generation of initial electrons; (2) secondary...
Wilkin Tang
(Air Force Research Laboratory)
08/07/2016, 11:00
Field emitter arrays have the potential to provide high current density, low voltage operation, and high pulse repetition for radar and communication. It is well known that packing density of the field emitter arrays significantly affects the emission current1. Previously we conducted experiments using two- and four-cathode configurations with same height. With all the fibers having uniform...
Charlie Anderson
(Scientific Applications and Research Associates, Inc.)
08/07/2016, 11:15
Ferrimagnetic-based nonlinear transmission lines (NLTLs) are actively researched as potential compact, phaseable sources of high power microwaves for various applications. The performance of the nonlinear microwave conversion process in gyromagnetic NLTLs is heavily dependent upon the properties of the ferrimagnetic materials and line geometries. A test bed for NLTL development has been...
Bucur Novac
(Loughborough University)
08/07/2016, 11:30
The paper describes the development of a repetitive 10 GW, Tesla-driven Blumlein pulsed power generator that produces a bipolar voltage output in excess of 600 kV peak-to-peak, with an initial rise time of about 300 ps and a frequency bandwidth larger than 1 GHz. The design of the system required PSpice simulations to be combined with three-dimensional analysis using the Computer Simulation...
Koviljka Stankovic
(University of Belgrade)
08/07/2016, 11:30
Breakdown (dc and pulse) of noble gases at low values of the product of pressure and inter-electrode distance (pd) is investigated in the paper theoretically and experimentally. This range of the product pd is particularly important since the work point of gas filled surge arresters (GFSA) is found in it. The influence of gamma and X radiation on the volt-second characteristics of breakdown...
Xavier Abel Bonnin
(CERN)
08/07/2016, 11:45
Recent advances in the development of linear particle accelerators bring back new challenges regarding the design of pulsed power converters. On one hand, pulses quality (e.g. flat-top ripple, stability and repeatability) becomes more and more important because it directly influences the beam acceleration parameters. On the other hand, the need of reliable systems often requires a capacitor...
Dr
Yi Liu
(Huazhong University of Science and Technology)
08/07/2016, 11:45
This paper aimed at investigating the dynamic shock wave induced by liquid pulsed current discharge to increase the intrinsic permeability of the cement sheath and rock in the oil well. It is believed that the blockage at the oil well perforation can be broken and removed from the bore-hole wall, and the fracture to increase the permeability of the hole-bottom region can be formed under the...
jian qiu
(Fudan University)
08/07/2016, 13:30
In the future, the fast linear transformer driver (FLTD) will include a mass of gas switches. Normal triggering technology is hard to match the increase of switches through the expansion of external triggering system. Although some triggering sequences are conductive to generate better outputs, the control system is hard to realize. Actually in a certain range of the triggering sequences, the...
Dr
Edson Guedes Costa
(Federal University of Campina Grande)
08/07/2016, 13:30
Polymeric insulators are largely used in electrical systems. However, these equipment still present serious problems, mainly related to their polymeric material layer. When the polymer is exposed to intense electric fields, insulation failure and loss of hydrophobicity may occur.
These problems are caused due to non-uniform electric field distribution along the insulator, which tends to...
Mr
Yang Xu
(Tsinghua University)
08/07/2016, 13:30
Objective: Oil-paper insulation is widely used in transformer bushings and current transformers, and the detection of partial discharge (PD) in this type of insulation has been paid attention. However, current methods for PD detection in these apparatus usually do not have satisfying performance in either sensitivity or noise rejection capacity. In this paper, an advanced method for PD...
Prof.
Masahiro Akiyama
(Iwate University)
08/07/2016, 13:30
Underwater streamer discharges produced by pulsed power have applications for water treatment such as an algae treatment at dam, clean of water and sewage and so on. Streamers propagation, bubble formation along streamers, bubble collapse, generation of shock waves and extinction of bubbles were observed by previous work. In this work, a target situation is flowing water from a moving rod...
Mr
Anıl Civil
(Aselsan Inc.)
08/07/2016, 13:30
Using generalized building blocks for the design of power electronics converters is advantageous in terms of scalability, modularity, power density, and reliability. For the control of those power electronic converters composed of Power Electronics Building Blocks (PEBBs), an easily scalable and modular control system should also be integrated. In this paper, a hierarchical control system...
Dr
Paul Melnik
(Woodruff Scientific Inc)
08/07/2016, 13:30
The Facility for Laboratory Reconnection Experiments (FLARE) [1] is an intermediate laboratory experiment currently under construction at Princeton University by a consortium of five universities and two Department of Energy (DoE) national laboratories, located at the PPPL. The goal of FLARE is to provide experimental accesses to new regimes of the magnetic reconnection process and related...
Mr
Apurva Kulkarni
(Indian Institute of Science, Bangalore)
08/07/2016, 13:30
Compulsators are AC synchronous generators designed to maximize the short circuit current that could be delivered by the generator. Compulsators have certain advantages over capacitor banks such as higher energy density, occurrence of natural current zero and flexibility in current shaping. Hence, they have become an attractive choice as a power source for the Electromagnetic Launch (EML)...
Mr
Dmitriy Bochkov
(Pulsed Technologies Ltd.), Dr
Victor Bochkov
(Pulsed Technologies ltd)
08/07/2016, 13:30
In the paper the most recent results of research and development efforts made by Pulsed Technologies ltd are presented. Design and essential characteristics of more than 36 types of high-power high-voltage switches TDI- and TPI-thyratrons (pseudospark switches) [1], TGI- thyratrons at 250 MW pulse and 0.5 MW average power, spark gaps, as well as X-ray tubes of the new generation are described....
Taichi Sugai
(Nagaoka University of Technology)
08/07/2016, 13:30
We have studied the water treatment by spraying into a pulsed discharge space in air, to decompose refractory organic compounds included in industrial waste water. In practical application, reactors of large scale are required to treat a large quantity of water. For that, electrodes with diameter of long distance is needed. Hence, the effect of the distance between electrodes was investigated....
170.
Effect of Solution Electric Conductivity on Surfactant Treatment Using Nanosecond Pulsed Powers
Mr
Kai Shimizu
(Tokushima University)
08/07/2016, 13:30
Development of the treatment technology of household effluent and industrial wastewater is imperative for environment conservation. In recent years, water treatments with electric discharges have been studied as one of the water treatment technologies. We have studied the decomposition of organic compounds, as indigo carmine and surfactant, in the water by streamer discharges generated with...
Mr
Takashi Ishikawa
(Kindai University)
08/07/2016, 13:30
Nitrogen oxides ($NO_{X}$) and particulate matter (PM) emitted from diesel exhaust causes awfully problem to the atmosphere. Current processing techniques are using the catalyst with a precious metal. By contrast, treatment of diesel exhaust using non-thermal plasma (NTP) might reduce the amount of the catalyst that the system uses. Topic of diesel exhaust treatment by NTP has been...
Mr
Yang Yang
(Hua zhong University of Technology and Science)
08/07/2016, 13:30
The electromagnetic launch system generates strong magnetic field radiation when discharging, which may degenerate or even destroy the function of semiconductor devices. Based on fundamental theory of Electromagnetics and Semiconductor Physics, this paper established magnetic injury effect model of typical semiconductor devices, such as diode, transistor and etc. The relation equations of...
Allen L. Garner
(Purdue University)
08/07/2016, 13:30
Mutliple theoretical and experimental studies have investigated the species generation,, ignition, flame stability, and combustion enhancement due to nanosecond electric pulses (NSEPs) for potential applications in plasma assisted combustion (PAC) and ignition (PAI) [1,2] . While many experiments use standard pulse generators with fixed pulse duration, rise- and fall-times, and peak voltage,...
Prof.
Bian Xingming
(North China Electric Power University), Prof.
Tiebing Lu
(North China Electric Power University)
08/07/2016, 13:30
Corona effects and its related electromagnetic environment on the operated conductors are important problems for high voltage transmission lines. The climate environment is quite complex in China, HVDC transmission lines may go through many high relative humidity areas,consequently, the corona performance of HVDC transmission lines will be greatly affected.
In the present paper, a corona...
Masatoshi Fue
(iwate university)
08/07/2016, 13:30
A large volume plasma with streamers is generated around an electrode with a sharp edge when a pulsed high voltage is applied to the electrode in water. Discharge in water is applied to the industry such as improving water quality. However, some of discharge mechanism in water has not been cleared. In this study, we generated the discharge in water with changing the water conductivity,...
Mr
Thomas Manegold
(Goethe University Frankfurt)
08/07/2016, 13:30
This contribution is about characterization of a Lorentz-drift based plasma accelerator in preparation for a colliding plasma experiment. The aim is to investigate the basics of a high energy density collision zone by accelerating two or more plasma sheets simultaneously against each other. A possible application for this device is the production of high densities for a plasma stripper.
The...
Jordan Chaparro
(NSWC Dahlgren)
08/07/2016, 13:30
Directed energy applications exist in which pulsed power systems are required to operate repetitively with average power in excess of 100 kW for a short duration followed by a relatively long period of inactivity. The small duty-factor of such systems allows for size, weight, and power optimization of power electronic systems. This paper presents the development of a high power density, low...
Dr
Timothy Ziemba
(Eagle Harbor Technologies, Inc.)
08/07/2016, 13:30
Repetitive Pulsed Power Systems, Repetitive Pulsed Magnetics, Accelerators, Beams, High Power Microwaves, and High Power Pulse Antennas
Poster Presentation
Short-pulse dielectric Two-Beam Accelerators (TBAs) have the advantage of producing high accelerating gradients near GV/m at significantly lower cost and complexity over traditional superconducting accelerators, which could significantly reduce the overall cost of accelerators for both scientific and industrial applications. One challenge is the development of a high voltage fast kicker system...
Mr
Tomohide Ikemoto
(Tokushima University)
08/07/2016, 13:30
Ozone is a strong oxidizer and becomes low environmental load because ozone is composed of oxygen atoms. Therefore, ozone is expected to be utilized in many fields, and high concentrated and efficient ozone producing method is desired. Although the ozone production using dielectric barrier discharges is generally used because of obtaining high concentration, the production efficiency is not...
Mr
Yang Fan
(State Key Laboratory of Electrical Insulation and Power Equipment, Xi’an Jiaotong University)
08/07/2016, 13:30
As a device of power transmission and distribution, a power transformer is considered to be the heart of a power system, and its safe running is important. The rate of transformer failures caused by the winding deformation remains high, therefore the study on detecting the transformer winding deformation is of great significance to avoid unexpected accidents and improve the reliability of the...
Dr
A. J. Reid
(Glasgow Caledonian University),
M. Azizian Fard
(Glasgow Caledonian University)
08/07/2016, 13:30
This paper presents an investigation of the influence of different operating conditions of HVDC convertors on partial discharge behavior occurring within cables on the DC side of an HVDC system. Cables at the DC side undergo different stresses due to transients and harmonics, which affect their insulation integrity and may result in an intensified level of partial discharge (PD) activity. Most...
Dr
Boris Gutman
(State University of New York, Nassau Community College), Mr
Giovanni Villanova
(Student, State University of New York, Nassau Community College), Mr
Nicholas Belluccia
(Student, State University of New York, Nassau Community College)
08/07/2016, 13:30
The plasma generators consists of a circular orifice anode and an inner cathode enclosed in a chamber and positioned in line with the nozzle. The otherwise closed chamber has a vortex-stabilizing gas inlet, and gates in the region of arc column and is heated and accelerated. By adjusting the flow of gas, one can force the arc column to contract anode-bore, outside of the chamber, flame-like...
Koviljka Stankovic
(University of Belgrade)
08/07/2016, 13:30
Isolation capability of organic and inorganic isolation materials is considerably different in respect to time. There is a relatively poor dependence on time in case of inorganic isolation materials. It is very significant in case of organic materials (that are more often in use). This paper will consider life expectancy of form-wound coil isolation of high-voltage motor depending on the part...
Koviljka Stankovic
(University of Belgrade)
08/07/2016, 13:30
The influence of measurement uncertainty of type A and B as well as combined uncertainty during the measuring of fast pulses by using capacitive divider will be considered in the paper. A budget of measurement uncertainty will be formed for that purpose, the one that is characteristic for measuring fast pulses with a capacitive divider. Several types of capacitive dividers will be designed and...
Mr
Sebastian Wetzeler
(RWTH Aachen, Institut for High Voltage Technology)
08/07/2016, 13:30
Circuit breakers are important components in the electrical power supply grid. The maintenance of high voltage gas circuit breakers requires high personal as well as monetary efforts for the asset operator. Furthermore, a faulty reassembly of the circuit breaker during maintenance can lead to a circuit breaker failure during operation. For this reason the maintenance strategy changed from a...
Cheng Zhang
(Institute of Electrical Engineering, Chinese Academy of Science)
08/07/2016, 13:30
In an inhomogeneous electric fields, there is several kinds of discharge mode existing in microsecond-pulse gliding discharges, which could be widely used in different fields. In this paper, in order to investigate mode transition among different discharge modes, effect of gas flow, pulse repetition frequency (PRF), and electrode distance on microsecond-pulse gliding discharge was studied by...
Mr
Bai-Peng Song
(Xi'an Jiaotong University)
08/07/2016, 13:30
Multipactor discharges on dielectric window seriously limits the generation and transmission of high power microwaves (HPM), which blocks the development of microwave technology. In order to understand its physical mechanism deeply, a simulation model based PIC Monte Carlo is built in this paper. The influences of microwave electromagnetic field and dielectric surface electrostatic field are...
YOU Haoyang
(Xi’an Jiaotong University)
08/07/2016, 13:30
Based on a large number of engineering practices, free conducting particles are unavoidable in GIS, which is largely threaten the security operating of GIS devices compared with fixed conducting particles. Scholars chose sphere particles and air as medium for easy analysis and calculation, which is not agree with practice situation. Therefore, the free conducting particle experiment device and...
Tao Shao
(Institute of Electrical Engineering, Chinese Academy of Science)
08/07/2016, 13:30
Nanosecond pulse discharges in air and other gases at atmospheric pressure can behave various forms of discharges, such as corona, diffuse, spark or arc. In this paper, characteristics of three typical nanosecond pulse discharges, including diffuse discharges, gliding discharges and synthetic jet, in an inhomogeneous electric field are presented.
Diffuse discharges can be obtained at...
Dr
Xiandong Li
(Huazhong university of science and technology)
08/07/2016, 13:30
The shock wave generated by underwater pulse discharge has been used in many industrial applications such as electrohydraulic forming, oil stimulation and rock fragmentation. From an industrial point of view, how to achieve high electrohydraulic transformation efficiency is one of the main focus. To solve this problem, the comprehensive understanding of the sophisticated phenomenon is...
Cheng Zhang
(Institute of Electrical Engineering, Chinese Academy of Science)
08/07/2016, 13:30
Diffuse discharge sustained by nanosecond pulses can generate volume discharge at atmospheric pressure, which has been widely studied since 2010s. Although the fast rising time limits the formation of spark stream under certain condition in nanosecond-pulse discharges, the pulse repetition rate and gap spacing may also affect the discharge mode. Our previous work showed that nanosecond-pulse...
Huantong Shi
(Tsinghua University)
08/07/2016, 13:30
PPG-3 is a small-scale pulsed power device built to study the physical process of single wire electrical explosion (EEW). It is composed of a capacitor bank of 10nF charged to 0-60kV, a laser-triggered switch, a 50 ohm transmission line and a discharge chamber housing the exploding wire. The voltage and current waveforms of the exploding wire were measured with a capacitive divider and a...
Prof.
Pietro Romano
(Palermo University)
08/07/2016, 13:30
In recent years, the increasing use of AC-DC converters, especially in the field of renewable energy sources, has led to the implementation of new modulation techniques, in particular the ones based on the pulse width modulation, PWM. The purpose of the present work is to evaluate the presence of partial discharges that occur when the supply is a PWM stress-type. In particular the goal is to...
Andrew Fierro
(Sandia National Laboratories)
08/07/2016, 13:30
Largely absent from kinetic, low-temperature plasma simulations is the capability for simulating radiation transport. It is largely acknowledged that self-produced radiation from gas discharges may have an impact on plasma formation and there is a need to include this physics into modern simulation codes. As such, there has been some effort in including photon dynamics into plasma...
Mr
Ryo Nakamura
(Kumamoto University)
08/07/2016, 13:30
Next generation type of ignition system has been developed in a gasoline internal combustion engine called as “Plasma-assisted combustion technology” [1]. This technology is considered to improve an engine performance through increasing the lean burn flammability and reducing emissions by applying non-equilibrium plasma to gasoline. However, the detailed effect of non-equilibrium plasma on...
Ms
Xi Li
(China Academy of Engineering Physics)
08/07/2016, 13:30
Low temperature plasma surface processing is one of the most effective ways to improve the hydrophily of polytetrafluoroethylene(PTFE) films. In order to increase surface treatment area and research the processing effects, a three-dielectric-layer barrier discharge device is used in this experiment. That is, one more dielectric layer is inserted into the gas gap between the primary dielectric...
Mr
SUN Xiang
(Electric Power Research Institute of State Grid Zhejiang Electric Power Corporation),
Yiming ZHENG
08/07/2016, 13:30
Due to the influence of external environment and the error of measuring equipment, on-line oil chromatogram data contains obvious noise and the signal oscillates. The monitoring data is difficult to be directly applied on analysis of the equipment state. In this paper, a novel wavelet based de-noising method is proposed for preprocessing the on-line oil chromatography data. By analyzing the...
Mr
Scott Rice
(Michigan State University)
08/07/2016, 13:30
Multipactor [1] is a resonant phenomenon in which an electromagnetic field causes a free electron to impact a surface, resulting in the surface emitting one or more secondary electrons. If the surface geometry and electromagnetic fields are appropriately arranged, the secondary electrons can then be accelerated and again impact a surface in the bounding geometry. If the net number of...
Dr
Liang Yang
(Dalian University of Technology)
08/07/2016, 13:30
This paper presents experiments carried out on atmospheric pressure surface dielectric barrier discharge plasma actuators. Two parts concerning these actuators are addressed in this work: First, the effect of a DC bias on the electrohydrodynamics force induced by the AC discharge actuator for airflow control is investigated. A special designed corona like discharge potential probe is used to...
Mr
Chaoliang Jin
(Huazhong University of Science and Technology)
08/07/2016, 13:30
**ABSTRACT:** Electromagnetic launch technology(EML) is a prime candidate for furture long range artillery systems. Pulse thyristor is one of the key components in pulse power supply(PPS). Mutiple modules are fired sequentially to generate flattop waveform for the load. However, in the circumstance, thyristors are easy to fail. In this paper, the pulse thyristors’ reliability was researched...
Dr
Xianjun Shao
(Research Institute of State Grid Zhejiang Electric Power Company; State Key Lab of Electrical Insulation and Power Equipment, Xi’an Jiaotong University)
08/07/2016, 13:30
ABSTRACT: Multiple PD sources may occur simultaneously in power equipment, and cause the interpretation problems such as pattern recognition and risk assessment. The separation of mixed signals is of importance for reliable interpretation. The separation features in most of the methods are with fixed mathematical equations, which may not applicable to the variable experimental conditions such...
Tomohiko Yamashita
(Guraduate School of Science and Technology, Kumamoto University)
08/07/2016, 13:30
We are investigating a new method to recycle metal and plastic from metal-coated plastics used as components of automobiles and electronics using pulsed power. In this study, we used CD-R as an example and investigated the separation of metal (silver layer) and plastic (polycarbonate basis) from CD-R using pulsed power. The pulse power from a magnetic pulse compression generator having the...
Mr
Ganesh Avhad
(IIT Bombay)
08/07/2016, 13:30
High voltage equipment like transformers, circuit breakers, etc. are vital for reliable power supply. Condition monitoring of these equipment is essential to avoid loss of revenue and unscheduled outages that happen because of catastrophic failures. Usually, these failures are a result of sustained corona or partial discharges and may also be due to system conditions that stress the equipment...
Tao Shao
(Institute of Electrical Engineering, Chinese Academy of Science)
08/07/2016, 13:30
Epoxy is used in the manufacture and electricity industry for a wide range of applications. However, it will easily form three-pronged and accumulate a lot of charge on the epoxy surface under high field strength. In this paper, dielectric barrier discharge (DBD) with a plate-in-parallel configuration was used to generate non-thermal plasmas for the surface modification of epoxy. The...
Dr
XILIN WANG
(Graduate School at Shenzhen, Tsinghua University)
08/07/2016, 13:30
RTV coatings and composite insulators had been widely used in electric insulations to prevent pollution flashover. Many methods of materials analysis were used to get more information about the content, the elements components, and the structures such as IR spectrum, XPS, EDS and XRD.
Laser-induced breakdown spectroscopy (LIBS) was an effective technique, unlike other conventional surface...
Mr
FAN ZHANG
(Xi'an Jiaotong University),
Yanjie Cui
(Xi'an Jiaotong University)
08/07/2016, 13:30
As one of the most important equipment in power system, the safe and stable operation of power transformer is of great importance and the condition maintenance and fault diagnosis can avoid breakdown of power transformer as well as save investment. Since 1980s, lots of method, such as Frequency Response Analysis, Low Voltage Impulse has been put into winding deformation detection. Among these...
ZhiYuan Li
(Huazhong University of Science and Technology)
08/07/2016, 13:30
A dynamic shock wave induced by underwater high pulsed current discharge has a wide potential applications in industrial and civil fields, such as rock fragmentation, electrohydraulic cleaning, and oil stimulation, etc. In order to promote the application of the dynamic shock wave, a test stand of underwater pulsed current discharge is designed and constructed. The main capacitor is 3 μF, and...
Dr
Mykhailo Vysotskyy
(Kiev national Shevchenko univ, Kiev, Ukraine), Prof.
Vladimir Vysotskii
(Kiev national Shevchenko univ, Kiev, Ukraine)
08/07/2016, 13:30
One of the optimal ways of generation of coherent hard radiation is connected with Free Electron Laser on relativistic particles. Unfortunately, the effectiveness of “usual” FEL is very low ($dN/dn<0.001$ quanta/particle). The possibilities of optimization of FEL and creation of tandem short wave laser with extremely high efficiency ($dN/dn>>1$ quanta/particle) are discussed. The main role in...
Tobin Knautz
(Goethe-Universität Frankfurt)
08/07/2016, 13:30
The purpose of this study is to investigate temperature profiles of electric arc discharges in a medium-voltage switchgear. This project aims at Validation of simulations of electric arc discharges temperatures. Therefore a simple contact geometry was applied under 150 A and 550 A of alternating current at normal atmosphere. The contacts were made up of both copper and copper-wolfram.
To...
Mrs
Chengyan Ren
(Institute of Electrical Engineering, Chinese Academy of Sciences)
08/07/2016, 13:30
Characteristics of plasma synthetic jet (PSJ) actuators driven by repetitive pulsed discharge have drawn much attention. In this paper, the PSJ actuator is composed of a pair of tungsten electrodes and a boron nitride cavity without a cap. The cavity has a diameter of 8 mm and volume of 400 mm³. The distance between two electrodes ranges from 1 mm to 4 mm. A homemade generator CMPC-40D is used...
Dr
Jianfeng Xie
(Huazhong Univ. of Sci.&Technol.), Prof.
Xiaotao Han
(Huazhong Univ. of Sci.&Technol.)
08/07/2016, 13:30
A Space-Time-Controlled Multi-Stage Pulsed Magnetic Field (Stic-Must-PMF) forming and manufacturing technology is introduced in Wuhan National High Magnetic Field Center, the technology is based on spatially strategically placed multiple coil systems and each coil can be addressed individually by its associated power supply with precise timing control. Such well-designed space-time...
Mr
Anıl Civil
(Aselsan Inc.)
08/07/2016, 13:30
In this work, lightning discharges and their effects on control & communication cables and antenna systems are investigated. The mechanism of lightning is described in detail and electric and magnetic fields created by lightning discharges are examined. An experimental test setup is designed and implemented in order to observe induced voltages on cables or antennas caused by lightning...
Prof.
Xingming Bian
(North China Electric Power University)
08/07/2016, 13:30
In recent years, with the deterioration of nature climatic, haze occurred frequently in Beiijng, China, especially in spring and winter seasons. During haze weather, the concentration of airborne particulate matter will turn higher, and it may have significant effects on high voltage power systems.
When the electric field intensity on the surface of the HVDC conductors exceeds a critical...
takuma oikawa
(Iwate university)
08/07/2016, 13:30
Pulse discharge in water has many applications, such as cleaning water at dams and lake, creating chemical active species and so on. In the study of discharge in water, application and generation mechanism have been studied in recent years. However, the mechanism has not been made clear completely yet. In high repetition discharges, it has not been cleared yet. In high repetition discharges,...
Dr
Alexey Mytnikov
(Tomsk Polytechnical University)
08/07/2016, 13:30
This paper is devoted to further development of pulsed method for transformer winding diagnostics. Power transformers are key components of any electrical power systems. A big amount of the power transformer population all over the world being in service at the moment, have been reached an age of 30 – 40 years and more. Timely state control of transformer winding is necessary step to provide a...
Foivos Antoulinakis
(University of Michigan, Ann Arbor, MI 48109, USA)
08/07/2016, 15:30
Joule heating limits the operation of most current carrying components and devices, especially in nanoscale circuits such as carbon nanofiber based field emitters, graphene electronics, and nanolasers [1]. For many materials of interest it is important to consider the temperature dependence of the thermal and electrical conductivities when calculating the effects of Joule heating. We examine...
Howard Sanders
(Silicon Power Corporation)
08/07/2016, 15:30
Many applications exist requiring high voltage switching in the tens of kilohertz rates with peak currents at the thousands of amps and blocking voltage at the thousands of volts. High-voltage, high-current thyristors provide low forward voltage and high peak current rating versus active area but suffer from long recovery times. To achieve high frequency operation would have required the use...
Dr
Christopher Yeckel
(Stangenes Industries)
08/07/2016, 15:45
In many accelerator applications requiring a fast-kicker magnet, radiation generated by particle beams can limit the physical proximity of the modulator to the magnet. It is typical that the modulator be located hundreds of feet away from the radiation environment, increasing the complexity and cost of the modulator and cabling.
The main susceptibility of the modulator to radiation-induced...
William Feilner
(Texas Tech University)
08/07/2016, 15:45
Arbitrary transient electric field shapes are generated in free space utilizing a set of transient signals with proper shape, amplitude, and time shift. Akin to wavelets in signal processing, brief, non-periodic oscillations are superimposed at a pre-selected location in space to effect destructive and constructive interference. With a properly chosen signal set, an entirely different...
Mrs
RAMYA RAMASWAMY
(BSAU)
08/07/2016, 16:00
A 2D and 3D electromagnetic simulation has been performed on compact electrode designs aimed to obtain higher electric field distribution between the high voltage and ground electrode, which ensures high bacterial inactivation in liquid food. The electric field simulations are performed for applied voltages of 1kV to 5kV. For the round edged design, the transmembrane potential of 1V is...
William Waldron
(Lawrence Berkeley National Laboratory)
08/07/2016, 16:00
A 6kV inductive voltage adder has been designed to drive 50 ohm stripline kicker magnets for an upgrade to the Advanced Light Source at Lawrence Berkeley National Laboratory to a diffraction limited light source. Several features were included in the design to allow damping of potential oscillations and optimizing the rise and fall times. A prototype of this inductive voltage adder has been...
Prof.
Luis Redondo
(Lisbon Engineering Superior Institute, Portugal)
08/07/2016, 16:15
A new semiconductor based Marx generator converter, using SiC discrete MOSFETs (Metal Oxide Semiconductor Field Effect Transistors), has been designed to meet specifications for carrying out high electrical gradient RF breakdown research for the Compact Linear Collider (CLIC) study: CLIC is an international collaboration working on a concept for a machine to collide electrons and positrons...
Tao Shao
(Institute of Electrical Engineering, Chinese Academy of Science)
08/07/2016, 16:45
Atmospheric pressure plasma jets (APPJs) have attracted much attention due to their flexibility, low cost and ability to treat remote objects. By grouping individual jets together to form jet arrays is a good solution for large area treatment. Most of the reports generated plasma jet arrays using He as discharge gas. However, Ar is more economic than He. But, due to its high breakdown voltage...
Landon Collier
(Texas Tech University)
08/07/2016, 16:45
L. Collier, J. Dickens, J. Mankowski, and A. Neuber
*Center for Pulsed Power and Power Electronics (CP3E),
Texas Tech University, 2500 Broadway Ave.
Lubbock, TX 79409 USA*
The performance of an all solid state linear transformer driver (LTD) is evaluated based on experimentally verified behavior of a single stage. While the majority of high voltage pulse generators for...
Martin Hochberg
(Karlsruhe Institute of Technology)
08/07/2016, 17:00
A challenge in fast switching of voltage-controlled power semiconductor devices such as MOSFETs and IGBTs is fast charging of the gate capacitance. As gate drive circuit and device leads both involve stray inductance, the rise rate of the gate current is limited. To achieve higher current rise rates, an overvoltage might be applied to the gate leads (so called gate-boosting) [1]. In this work,...
30.
Development of a test platform for high voltage ceramic capacitors based on magnetic compression
Prof.
Hanwu Yang
(National University of Defense Technology)
Repetitive Pulsed Power Systems, Repetitive Pulsed Magnetics, Accelerators, Beams, High Power Microwaves, and High Power Pulse Antennas
Poster Presentation
Abstract: The long lifetime, fast charging and discharging capabilities of high voltage ceramic capacitors are important for their application in pulsed power facilities. This paper presents a rep-rate platform for testing capacitors at several tens kilovolts with charging and discharging time in microsecond region. The platform consists of a high voltage power supply, a primary unit, a...
Amanda Loveless
(Purdue University)
High Power Microwaves
Poster Presentation
I like power modulators.
Amanda Loveless
(Purdue University)
High Power Microwaves
Oral Presentation
I really like power modulators.
