High-temperature superconducting motor using y-ba-cu-0 bulk magnets

Yoshitaka Itoh; Yousuke Yanagi; Masaaki Yoshikawa; Tetsuo Oka; Shintaro Harada; Tsutomu Sakakibara; Yuh Yamada; Uichiro Mizutani

doi:10.1143/JJAP.34.5574

High-temperature superconducting motor using y-ba-cu-0 bulk magnets

Yoshitaka Itoh, Yousuke Yanagi, Masaaki Yoshikawa, Tetsuo Oka, Shintaro Harada, Tsutomu Sakakibara, Yuh Yamada, Uichiro Mizutani

Research output: Contribution to journal › Article › peer-review

70 Citations (Scopus)

Abstract

A DC motor equipped with melt-processed Y-Ba-Cu-0 (YBCO) superconductors as field magnets was constructed. The YBCO bulks were magnetized at temperatures of 65-77 K in a liquid nitrogen vessel by applying a pulsed magnetic field. The maximum output power was 940 W when the YBCO bulks were cooled to 65 K. Continuous running tests were carried out for up to 6 h. We found that the trapped magnetic fluxes are hardly affected by the magnetic field of 7500 A/m generated by the armature current and that cooling of the YBCO bulks to low temperatures is very effective for holding the trapped field at a high level and, hence, substantially elevating the performance of a high-temperature superconducting (HTSC) motor.

Original language	English
Pages (from-to)	5574-5578
Number of pages	5
Journal	Japanese Journal of Applied Physics
Volume	34
Issue number	10
DOIs	https://doi.org/10.1143/JJAP.34.5574
Publication status	Published - 1995 Oct
Externally published	Yes

Keywords

Bulk magnet
Melt process
Pulse magnetization
Superconducting motor
Trapped magnetic field
Y-Ba-Cu-O

ASJC Scopus subject areas

Engineering(all)
Physics and Astronomy(all)

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10.1143/JJAP.34.5574

Cite this

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title = "High-temperature superconducting motor using y-ba-cu-0 bulk magnets",

abstract = "A DC motor equipped with melt-processed Y-Ba-Cu-0 (YBCO) superconductors as field magnets was constructed. The YBCO bulks were magnetized at temperatures of 65-77 K in a liquid nitrogen vessel by applying a pulsed magnetic field. The maximum output power was 940 W when the YBCO bulks were cooled to 65 K. Continuous running tests were carried out for up to 6 h. We found that the trapped magnetic fluxes are hardly affected by the magnetic field of 7500 A/m generated by the armature current and that cooling of the YBCO bulks to low temperatures is very effective for holding the trapped field at a high level and, hence, substantially elevating the performance of a high-temperature superconducting (HTSC) motor.",

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author = "Yoshitaka Itoh and Yousuke Yanagi and Masaaki Yoshikawa and Tetsuo Oka and Shintaro Harada and Tsutomu Sakakibara and Yuh Yamada and Uichiro Mizutani",

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AU - Itoh, Yoshitaka

AU - Yanagi, Yousuke

AU - Yoshikawa, Masaaki

AU - Oka, Tetsuo

AU - Harada, Shintaro

AU - Sakakibara, Tsutomu

AU - Yamada, Yuh

AU - Mizutani, Uichiro

PY - 1995/10

Y1 - 1995/10

N2 - A DC motor equipped with melt-processed Y-Ba-Cu-0 (YBCO) superconductors as field magnets was constructed. The YBCO bulks were magnetized at temperatures of 65-77 K in a liquid nitrogen vessel by applying a pulsed magnetic field. The maximum output power was 940 W when the YBCO bulks were cooled to 65 K. Continuous running tests were carried out for up to 6 h. We found that the trapped magnetic fluxes are hardly affected by the magnetic field of 7500 A/m generated by the armature current and that cooling of the YBCO bulks to low temperatures is very effective for holding the trapped field at a high level and, hence, substantially elevating the performance of a high-temperature superconducting (HTSC) motor.

AB - A DC motor equipped with melt-processed Y-Ba-Cu-0 (YBCO) superconductors as field magnets was constructed. The YBCO bulks were magnetized at temperatures of 65-77 K in a liquid nitrogen vessel by applying a pulsed magnetic field. The maximum output power was 940 W when the YBCO bulks were cooled to 65 K. Continuous running tests were carried out for up to 6 h. We found that the trapped magnetic fluxes are hardly affected by the magnetic field of 7500 A/m generated by the armature current and that cooling of the YBCO bulks to low temperatures is very effective for holding the trapped field at a high level and, hence, substantially elevating the performance of a high-temperature superconducting (HTSC) motor.

KW - Bulk magnet

KW - Melt process

KW - Pulse magnetization

KW - Superconducting motor

KW - Trapped magnetic field

KW - Y-Ba-Cu-O

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ER -

High-temperature superconducting motor using y-ba-cu-0 bulk magnets

Abstract

Keywords

ASJC Scopus subject areas

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