Trial Test of Fully HTS Induction/Synchronous Machine for Next Generation Electric Vehicle

Sekiguchi, D.; Nakamura, Taketsune; Misawa, Shintaro; Kitano, Hideo; Matsuo, Tetsuji; Amemiya, Naoyuki; Ito, Yasuhide; Yoshikawa, Masaaki; Terazawa, Toshihisa; Osamura, Kōzō; Ohashi, Yutaka; Okumura, Nobuo

doi:10.1109/tasc.2011.2176094

Cited by 59 publications

(25 citation statements)

References 1 publication

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“…The curl of magnetic vector potential is equal to the magnetic flux density B, as in the following equation: (5) On the other hand, the divergence of the magnetic vector potential is equal to zero as follows: (6) The following equation can be obtained by substituting the magnetic vector potential definition in the induction law: (7) As a result, the electric field equation can be written as follows: (8) where, E and are the electric field strength and the electric scalar potential, respectively.…”

Section: Finite Element Analysismentioning

confidence: 99%

“…The eddy current density in the conducting zone can be stated as follows: (9) where,σ represents the electric conductivity and E was already defined in Equation (8). The governing equation can be written in accordance to Ampere's law and magnetic vector potential as follows: (10) where, µ is the magnetic permeability.…”

Section: Finite Element Analysismentioning

confidence: 99%

“…The mentioned test showed different results including; decrement in the resistance of the superconducting rotor with decreasing the slip and also achieving a better starting torque. Sekiguchi et al [8], clarified the application of HTS Induction/Synchronous machines (HTS-ISM) in electrical vehicles. A 20 KW class of HTS-ISM is designed and also fabricated with DI-BSCCO superconductor.…”

Section: Introductionmentioning

confidence: 99%

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Performance Improvement of a Slotted Solid Rotor Induction Motor with High Temperature Superconder Coating

Azari

2019

IJE

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A B S T R A C TThis paper analyzes an induction motor with high temperature superconducter (HTS) coated slotted solid rotor. By slotting the solid rotor, the electromagnetic torque near synchronous speed will increase but the starting torque will decrease. To improve starting torque, rotor slots are coated with HTS materials. Using HTS material vary the rotor resistance to great extends in starting step and this means the starting torque will be maximized. Also the torque near synchronous speed will be higher than before because of the resistance of the HTS is completely zero in this period. This would help the torque become more than the case without any coating. It is concluded that, HTS coating of slotted solid rotor will increase the starting torque by 42 and 74% than smooth type rotor and slotted one, respectively. For case-study motor, the torque near synchronous speed these improvements were 75% and 33%, respectively. The performance of the proposed motor is simulated using finite element method (FEM).

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Section: Finite Element Analysismentioning

confidence: 99%

Section: Finite Element Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Performance Improvement of a Slotted Solid Rotor Induction Motor with High Temperature Superconder Coating

Azari

2019

IJE

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“…Another comparison between an IM and a switched reluctance drive was published in [47]. To reduce losses even further, the study reported in [48] considered superconduction. If in-wheel drive motors are used, then the motor can be fabricated with an outer cage rotor [49], which will help increase the mean air-gap diameter and, hence, the torque.…”

Section: Copper Cage Immentioning

confidence: 99%

Automotive Electric Propulsion Systems With Reduced or No Permanent Magnets: An Overview

Boldea

Tutelea

Parsa

et al. 2014

IEEE Trans. Ind. Electron.

675

245

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Hybrid and electric vehicle technology has seen rapid development in recent years. The motor and the generator are at the heart of the vehicle drive and energy system and often utilize expensive rare-earth permanent magnet (PM) material. This paper reviews and addresses the research work that has been carried out to reduce the amount of rare-earth material that is used while maintaining the high efficiency and performance that rare-earth PM machines offer. These new machines can use either less rare-earth PM material, weaker ferrite magnets, or no magnets; and they need to meet the high performance that the more usual interior PM synchronous motor with sintered neodymium-iron-boron magnets provides. These machines can take the form of PM-assisted synchronous reluctance machines, induction machines, switched reluctance machines, wound rotor synchronous machines (claw pole or biaxially excited), doublesaliency machines with ac or dc stator current control, or brushless dc multiple-phase reluctance machines.

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“…The capital cost of the SMES unit lies in using a cryogenic system equipped with liquid helium to maintain the conductor within low temperature. However, with the recent development of high-temperature superconductors [42], [43] equipped with less expensive liquid nitrogen as a cryogenic medium, the cost of SMES is becoming commercially affordable [6], [30].…”

Section: Smes Unit Costmentioning

confidence: 99%

Application of SMES Unit to Improve DFIG Power Dispatch and Dynamic Performance During Intermittent Misfire and Fire-Through Faults

Yunus¹,

Abu-Siada

Masoum

2013

IEEE Trans. Appl. Supercond.

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The number of wind turbines connected to power grids has significantly increased during the last decade. This is mainly due to the convincing revolution in power electronic technology and the growing concern about greenhouse effect that is intensified due to the burning of fossil fuels. Variable-speed wind energy conversion systems (WECSs) such as doubly fed induction generators (DFIGs) are dominating the wind energy market due to their superior advantages over fixed-speed-based WECS which include more captured energy, less mechanical stress, and acoustical noise. DFIG is interfaced to the ac network through the grid-side voltage source converter (VSC) and rotor-side VSC to enable the variable-speed operation of the wind turbine and to provide reactive power support to the ac grid during disturbance events. Converter switching malfunction such as misfire and fire-through may influence the power dispatch capability of the DFIG. In this paper, a superconducting magnetic energy storage (SMES) unit is utilized to improve the power dispatch and dynamic performance of DFIG-based WECS during internal converter switching malfunctions such as misfire and fire-through faults. Simulation results without and with SMES connected to the system are presented, compared, and analyzed.Index Terms-Doubly fed induction generators (DFIGs), fire-through, misfire, superconducting magnetic energy storage (SMES).

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Trial Test of Fully HTS Induction/Synchronous Machine for Next Generation Electric Vehicle

Cited by 59 publications

References 1 publication

Performance Improvement of a Slotted Solid Rotor Induction Motor with High Temperature Superconder Coating

Performance Improvement of a Slotted Solid Rotor Induction Motor with High Temperature Superconder Coating

Automotive Electric Propulsion Systems With Reduced or No Permanent Magnets: An Overview

Application of SMES Unit to Improve DFIG Power Dispatch and Dynamic Performance During Intermittent Misfire and Fire-Through Faults

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