Mr
Knud Dahlerup-Petersen
(CERN)
07/07/2016, 13:30
Opening, Closing, and Solid State Switches
Poster Presentation
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...
Prof.
kefu Liu
(Fudan University)
07/07/2016, 13:30
Solid State Power Modulators, Components, Switches, and Systems
Poster Presentation
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,...
Dr
youcheng wu
(insititute of fluid physics)
07/07/2016, 13:30
Opening, Closing, and Solid State Switches
Poster Presentation
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...
07/07/2016, 13:30
Solid State Power Modulators, Components, Switches, and Systems
Poster Presentation
Photoconductive semiconductor switches (PCSS) have an excellent performance in the field of pulse power, especially the one made of GaAs does. Since PCSS can be operated in non-linear mode, laser diodes, which are small in size，low-cost and easy to be driven compared to traditional laser devices, can be used to trigger it in low power. In this condition, pulse width of the radiation is always...
Miguel Hinojosa
(Army Research Laboratory)
07/07/2016, 13:30
Opening, Closing, and Solid State Switches
Poster Presentation
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...
Pavel Rodin
(Ioffe Institute, Russian Academy of Sciences)
07/07/2016, 13:30
Solid State Power Modulators, Components, Switches, and Systems
Poster Presentation
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
Dmitriy Bochkov
(Pulsed Technologies ltd.), Dr
Victor Bochkov
(Pulsed Technologies ltd.)
07/07/2016, 13:30
Opening, Closing, and Solid State Switches
Poster Presentation
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...
Jason M. Sanders
(Transient Plasma Systems),
Stanislav Soloviev
(GE Global Research)
07/07/2016, 13:30
Opening, Closing, and Solid State Switches
Poster Presentation
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...
Mr
Tonglei Wang
(Xi'an Jiaotong University)
07/07/2016, 13:30
Opening, Closing, and Solid State Switches
Poster Presentation
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...
Mr
Hadi Ebrahimi
(The University of Texas at Tyler)
07/07/2016, 13:30
Opening, Closing, and Solid State Switches
Poster Presentation
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...
07/07/2016, 13:30
Opening, Closing, and Solid State Switches
Poster Presentation
There is two types of pulse neutron radiation sources:
a) accelerators generate beams:
- an electron beam interacting with the target generates photo-neutrons;
- beam of hydrogen atoms (or protons) interacting with the target generate neutrons (n1) due to the proton splitting.
b) pulse nuclear reactors are neutrons sources due to nuclear reaction.
One of the possible...
07/07/2016, 13:30
Opening, Closing, and Solid State Switches
Poster Presentation
Laser inertial confinement fusion will be a kind of new energy supply in the future. As a drive source of inertial confinement fusion, the large laser equipment is used to afford the high power laser beam for thermonuclear fusion. A high-current closing switch is an important component in pulsed power systems. High-energy switch and its trigger system are required for the discharge...
Mr
Jinchang Hu
(Huazhong University of Science and Technology)
07/07/2016, 13:30
Opening, Closing, and Solid State Switches
Poster Presentation
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 ...
Mr
Gert Jan Coelingh
(CERN)
07/07/2016, 13:30
Opening, Closing, and Solid State Switches
Poster Presentation
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 ...
Mr
Michael Kempkes
(Diversified Technologies, Inc.)
07/07/2016, 13:30
Opening, Closing, and Solid State Switches
Poster Presentation
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
Opening, Closing, and Solid State Switches
Poster Presentation
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...
