Development of High-Temperature Superconducting DC Motor for Automobiles

Oyama, Hitoshi; Shinzato, Tsuyoshi

doi:10.1142/9789814749268_0036

Cited by 3 publications

(2 citation statements)

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“…As a candidate that satisfies these conditions, a motor using a high-temperature superconducting (HTS) conductor capable of transporting a large current with low loss has attracted considerable attention. Therefore, vigorous research and development has been carried out in ships [2]- [6], land transportation equipment [7]- [9], Manuscript received November 13, 2022. This work was supported by JSPS KAKENHI under Grants 22H01471 and 19H05617.…”

Section: Introductionmentioning

confidence: 99%

Development of 50-kW-Class High-Temperature Superconducting Induction/Synchronous Motor With Continuous Drive Characteristics from Room Temperature

Nakamura

Yoshikawa

Terazawa

et al. 2023

IEEE Trans. Appl. Supercond.

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We investigate the rotational characteristics of a 50-kW-class high-temperature superconducting induction/synchronous motor in superconducting and non-superconducting states. The prototype motor was first placed in liquid nitrogen, and the efficiency contour was obtained. The liquid nitrogen was then gradually removed from the motor under the partial load (10 kW) condition. This showed that continuous operation is possible even at temperatures exceeding 130 K. Furthermore, we succeeded in driving at 11% of the rated output, even at room temperature. As a result, a practical high-temperature superconducting motor that can continue to operate with reduced output even when the cooling system fails could be realized.

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Section: Introductionmentioning

confidence: 99%

Development of 50-kW-Class High-Temperature Superconducting Induction/Synchronous Motor With Continuous Drive Characteristics from Room Temperature

Nakamura

Yoshikawa

Terazawa

et al. 2023

IEEE Trans. Appl. Supercond.

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“…The mechanical output target range is a few hundred kW, and a compact, high-efficiency cryocooler is mandatory for practical application. Researchers at Sumitomo Electric Industries (Japan) has developed a series-connected direct-current (DC) motor, in which liquid nitrogen cooled bismuth strontium calcium copper oxide (BSCCO) pancake field coils are adopted [14]. This motor has been mounted on a middle class passenger car, and an actual running test has been successfully performed.…”

Section: Introductionmentioning

confidence: 99%

Multidisciplinary analysis of the transient performance of a 20 kW class HTS induction/synchronous motor cooled with a cryocooler and gaseous air-gap coolant

2019

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This paper presents a multidisciplinary analysis procedure for the transient cooling and rotating characteristics of a 20 kW class high temperature superconducting (HTS) induction/synchronous motor, this analysis couples the nonlinear voltage equations, equation of motion, and a thermal equivalent circuit. First, the quantitative accuracy of the thermal equivalent circuit is validated through comparison with results obtained using the 3D finite element analysis. Then, multidisciplinary analysis is performed with the assumption that the outer surface of the stator is cooled by a cryocooler and the air-gap between the stator and rotor is cooled by a gaseous coolant.It is demonstrated that the transient performance of the motor can be fully determined using our developed procedure. For instance, we can determine the gas-flow speed in the air-gap required for cooling of the HTS rotor, by assuming appropriate expressions for the heat transfer in the air-gap.The analysis procedure and obtained results are effective for investigation of the variable speed performance of an HTS motor system and for optimal design of the motor cooling structure and method.

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Superconductor on wheels

Bhullar¹,

Sagwal²,

Agrawal³

2022

PROCEEDINGS OF THE INTERNATIONAL CONFERENCE ON RESEARCH ADVANCES IN ENGINEERING AND TECHNOLOGY - ITechCET 2021

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Development of High-Temperature Superconducting DC Motor for Automobiles

Cited by 3 publications

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Development of 50-kW-Class High-Temperature Superconducting Induction/Synchronous Motor With Continuous Drive Characteristics from Room Temperature

Development of 50-kW-Class High-Temperature Superconducting Induction/Synchronous Motor With Continuous Drive Characteristics from Room Temperature

Multidisciplinary analysis of the transient performance of a 20 kW class HTS induction/synchronous motor cooled with a cryocooler and gaseous air-gap coolant

Superconductor on wheels

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Development of High-Temperature Superconducting DC Motor for Automobiles

Cited by 3 publications

References 0 publications

Development of 50-kW-Class High-Temperature Superconducting Induction/Synchronous Motor With Continuous Drive Characteristics from Room Temperature

Development of 50-kW-Class High-Temperature Superconducting Induction/Synchronous Motor With Continuous Drive Characteristics from Room Temperature

Multidisciplinary analysis of the transient performance of a 20 kW class HTS induction/synchronous motor cooled with a cryocooler and gaseous air-gap coolant

Superconductor on wheels

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Multidisciplinary analysis of the transient performance of a 20 kW class HTS induction/synchronous motor cooled with a cryocooler and gaseous air-gap coolant