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Mr Ji Hyung Kim (Jeju National University)28/08/2017, 13:15E1 - MotorsPoster Presentation of 1h45m
This paper presents electromagnetic design and 3D finite element analysis (FEA) results to develop prototype machine system for the high-temperature superconducting (HTS) rotating machine integrated with a contactless HTS excitation device (CHED). This is connected and integrated on the same shaft of the rotating machine and charge the HTS field coils by pumping magnetic flux with non-contact...
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Mr Rui Li (Shenzhen University)28/08/2017, 13:15E1 - MotorsPoster Presentation of 1h45m
As a vertical transportation apparatus for moving people and goods between floors, the elevator or lift plays an increasingly important role in the high-rise buildings. The requirements for fast velocity, comfort ability, reliability and safety issues become higher and higher. Due to its inefficiency and complicated operating system, the conventional cable elevators, which usually utilize...
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Kyoung-Jin Joo, Mr Gang Seok Lee (Hanyang Univ.)28/08/2017, 13:15E1 - MotorsPoster Presentation of 1h45m
This paper proposes an optimal control algorithm through lateral displacement and yaw angle in curved road of shallow-depth subway systems. In the case of the surface transportation, which has recently been introduced, severe curved driving performance is required for the downtown. The existing researches are the main research theme of the lateral displacement restoration control, but there is...
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Kyoung-Jin Joo, Mr Gang Seok Lee (Hanyang Univ.)28/08/2017, 13:15E1 - MotorsPoster Presentation of 1h45m
This paper proposes an algorithm to obtain better results in the integrated control by reflecting the characteristics of the individual control of the front wheel and the rear wheel of shallow-depth subway systems In the case of the surface transportation, which has recently been introduced, severly curved driving performance is required for the downtown. It is possible to decrease the curve...
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JONGSUK LIM (Hanyang university)28/08/2017, 13:15E1 - MotorsPoster Presentation of 1h45m
BLDC motors and controllers are used in many industrial fields due to the decline of permanent magnet price and the lower cost semiconductor devices. The BLDC motor is easy to maintain as compared to the DC motor and has the advantage of small size, high power, low noise, etc. The BLDC motor is generally used a lot of 120degree energizing method. Also, this motor is commonly controlled by a...
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Ms Meng Ge (Huazhong University of Science & Technology)28/08/2017, 13:15E1 - MotorsPoster Presentation of 1h45m
Frozen permeability method has been widely used in separating the PM torque and reluctance torque and calculating inductance. For conventional frozen permeability method (CFPM), only the core permeability is fixed. It is suitable for the machine applying rare-earth PM materials such as NdFeB, since the material B-H curve is linear and coincide with the recoil line. However, when dealing with...
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Hao Chen (China University of Mining & Technology)28/08/2017, 13:15E1 - MotorsPoster Presentation of 1h45m
A transverse flux single-phase tubular switched reluctance linear motor (TF-TSRLM) is proposed in the paper, and it is compared with the longitudinal flux single-phase tubular switched reluctance linear motor (LF-TSRLM) in electromagnetic thrust. The stator consists of five ferromagnetic rings that are divided by four spacer rings. On the cross section of the TF-TSRLM, a stator ferromagnetic...
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Hao Chen (China University of Mining & Technology)28/08/2017, 13:15E1 - MotorsPoster Presentation of 1h45m
DR-SRM is a novel structure device which can be evolved from conventional SRMs with a single stator and single rotor by increasing a rotor and changing the structure of stator and rotor. The double mechanical ports and double electrical ports are formed by increasing the number of rotor. This paper presents a model for dual rotors switched reluctance motor consisting of two airgaps, an...
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Hao Chen (China University of Mining & Technology)28/08/2017, 13:15E1 - MotorsPoster Presentation of 1h45m
In this paper, the flux linkage curve of the second form is analyzed. The characteristic of the flux linkage is presented in the form of a high order polynomial, which makes it easier for data-fitting. The flux linkage curve of the form ψ-θ curves for different i values is analyzed. The flux linkage data of the SRM prototype is obtained on 4 specific rotor positions (0°, 7.5°, 15°, 22.5°). The...
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Ms Tian Yao (School of Electrical and Information Engineering, Jiangsu University)28/08/2017, 13:15E1 - MotorsPoster Presentation of 1h45m
Currently, the tubular linear permanent-magnet machine has been increasingly adopted for active vehicle suspension, since it has zero net radial force between the armature and stator, no end-windings, and volumetrically efficient. However, it suffers from relatively low thrust force and poor fault-tolerant capability. Thus, a novel modular-stator tubular vernier permanent-magnet machine will...
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Mr Jay Patel (University of Bath)28/08/2017, 13:15E1 - MotorsPoster Presentation of 1h45m
Electrical aircraft are an important area of modern engineering development to meet the increasing air travel demand while managing a reduction of dependence on fossil fuels. The challenge is exacerbated due to the high sensitivity of aircraft performance with respect to mass and therefore superconducting machines are seen as a possible solution. A key enabler is to reduce the overall size of...
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JONGSUK LIM (Hanyang university), Mr Gang Seok Lee (Hanyang Univ.)28/08/2017, 13:15E1 - MotorsPoster Presentation of 1h45m
In various industries, ultra-high speed motor is actively studied and developed for diverse industrial applications like generators/starters for micro gas turbines, turbo-compressor, vacuum pump and turbine generator. Electric Turbo Compounding System (E-TCS), which operates with motor/generator unit at a very-high speed, is the most realistic alternative technology that can respond to fuel...
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Qian Chen (Jiangsu University)28/08/2017, 13:15E1 - MotorsPoster Presentation of 1h45m
Switched reluctance machines are widely used in variety application in automotive, renewable energy, aerospace and domestic appliances sectors, due to its low cost, high torque capacity, simple and robust structure. In order to improve the reliability of SRM further, a dual-channel SRM (DCSRM) was proposed and their fault tolerant capacity was verified. However, the traditional topology of...
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Tae-Yong Lee (Sungkyunkwn Univ)28/08/2017, 13:15E1 - MotorsPoster Presentation of 1h45m
As demand for motors that are capable of high-torque direct drive operation is increasing, Vernier motor is gaining its importance. Vernier motor is a type of permanent magnet (PM) motor, which is specialized for low speed and high torque operation applications. Unlike conventional PM synchronous motor (PMSM), which generates torque mainly from fundamental flux component, Vernier motor...
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Jae-Kwang Lee (hanyang university)28/08/2017, 13:15E1 - MotorsPoster Presentation of 1h45m
INTRODUCTION: Following to the recently emerging environmental regulations and energy depletion, HEV and EV draw attention as future cars. And there are many studies carried out for traction motor design. This study is about a design algorithm which can make wound field synchronous motor design easier and faster. Because main flux path is sensitive to magnetic saturation and heat problem is...
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Dr Junqiang Zheng (Jiangsu university)28/08/2017, 13:15E1 - MotorsPoster Presentation of 1h45m
Surface permanent-magnet (SPM) machines with a fractional-slot concentrated winding (FSCW) present several advantages, such as high copper packing factor, short end-winding length, low cogging torque, small volume and good fault-tolerant capability, because of which SPM machines have been increasingly applied in aerospace applications. However, the key challenge of utilizing FSCW is abundant...
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Hao Chen (China University of Mining & Technology)28/08/2017, 13:15E1 - MotorsPoster Presentation of 1h45m
The dual-stator switched reluctance motor (SRM) is based on the traditional SRM and increases one electrical port with two stators and a rotor. The outer-stator adopts salient pole structure of 12 poles, the inner-stator adopts 6 poles, the middle-rotor is doubly salient with 8 poles. The outer-stator and inner-stator have concentrated windings. That is to say, the outer motor is three-phase...
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Mr Tae-Yong Lee (Sungkyunkwn Univ)28/08/2017, 13:15E1 - MotorsPoster Presentation of 1h45m
In this research, we designed Interior Permanent Magnet Synchronous Motor (IPMSM) type traction motor for 130kW Electrical Vehicle (EV). In addition, we analyzed its electromagnetic characteristics related to Permanent Magnet (PM) such as eddy current loss of PM, demagnetization, electromagnetic force especially radial magnetic force, and performed the noise analysis using the noise map in...
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Chang-Sung Jin (Hanwha Techwin)28/08/2017, 13:15E1 - MotorsPoster Presentation of 1h45m
Permanent magnet (PM), such as NdFeB, in the interior permanent magnet synchronous motor (IPMSM) used to be irreversibly demagnetized when the motor operate at high temperature. Therefore, the motor is designed considering irreversible demagnetization of PM. However, it is difficult to optimize motor design because we can’t forecast the exact temperature of PM when the motor operate. In...
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Hao Chen (China University of Mining & Technology)28/08/2017, 13:15E1 - MotorsPoster Presentation of 1h45m
This paper analyzed the flux characteristics of a single-phase tubular switched reluctance linear motor (TSRLM) based on magnetic equivalent circuit (MEC) method. The stator is composed of a stator sleeve and a bread type winding. There are two teeth on the stator. The bread type winding is embedded in the slot of the stator, which can improve the coil factor and decrease the end effect. The...
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Prof. Jian Li (Huazhong University of Science & Technology)28/08/2017, 13:15E1 - MotorsPoster Presentation of 1h45m
Linear induction motors (LIMs) have been widely applied in urban transit systems, such as in metros and low-speed magnetically levitated train. Due to the inherent eddy-current loss on the secondary reaction plate, the LIM applied in urban rail transit suffers from poor power factor and efficiency. And the efficiency of the current linear synchronous motors in urban rail transit is also...
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Jin-Seok Kim (SUNGKYUNKWAN UNIVERSITY)28/08/2017, 13:15E1 - MotorsPoster Presentation of 1h45m
Variable Flux Memory Motor(VFMM) is able to vary its magnetic field intensity of the permanent magnet(PM). Thus, VFMM has advantage for high speed operation with higher efficiency, when field intensity of PM is reduced. However, shape of the motor and arrangement of PM are important factors within restricted geometry of VFMM, because large d-axis current pulse is requisite to achieve high...
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293. Optimization of the Pole Piece in Coaxial Magnetic Gears for Transfer Torque Ripple ImprovementDr Sung-Jin Kim (Chosun University)28/08/2017, 13:15E1 - MotorsPoster Presentation of 1h45m
A coaxial magnetic gear (CMG) is a non-contact machine that is used to transfer torque and to accelerate or decelerate. This type of gear has several advantages, including no mechanical loss, no required maintenance, and outstanding protection against overload [1]. As a result, they are used in various applications, such as wind power generation and electric vehicles. However, CMGs have high...
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Chang-Sung Jin (Hanwha Techwin)28/08/2017, 13:15E1 - MotorsPoster Presentation of 1h45m
This study focused on efficiency improvement of BLDC motors via reduction of torque ripple, core loss, and permanent magnet loss. To achieve this objective, we proposed an improved 150° commutation method for three-phase permanent magnet brushless DC (BLDC) motors to improve the current waveform. Although the 120° commutation method is generally employed for a BLDC motor, the 150° commutation...
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Mr Jae-Kwang Lee (hanyang university)28/08/2017, 13:15E1 - MotorsPoster Presentation of 1h45m
Recently, As environmental problems such as global warming have appeared, MPES (Minimum Energy Performance standard) that regulates the efficiency of industrial induction motor is being implemented centered on developed countries. MPES limits the use of induction motors less than a certain efficiency to improve the energy efficiency. There are cases where the use of induction motors below IE4...
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