Design Study of 2-MW Fully Superconducting Synchronous Motors

Shogo Fukuda, Kiwook Yun, Masataka Iwakuma, Shun Miura, Seiki Sato, Kohichi Yoshida, Akira Tomioka, Msayuki Konno, Teruo Izumi

研究成果: Contribution to journalArticle査読

13 被引用数 (Scopus)


This study designed various 2-MW fully superconducting motors with the recently developed REBa2Cu3O7-δ (RE: Rare Earth, Y, Gd, Eu, REBCO) superconducting tapes to determine an optimum structure. The ac loss and critical current properties of the REBCO tapes were investigated and adopted in the design and analysis of the motor. The motors were designed by setting the operating temperature and the magnitude of magnetic field at the gap as parameters, and the properties of each motor were evaluated through numerical simulations with commercially available two-dimensional analysis software. Various factors, such as ac loss in the windings, efficiency, and the length of the required REBCO tapes, were evaluated, and the dependence of these factors on the operating temperature T, magnetic loading Bg, and diameter of motor D were analyzed. The ac loss induced in the armature windings could be reduced by our original technique, which involves scribing into a multifilamentary structure and special winding of the tapes. As a result, the motor could achieve an efficiency of 97.2% under optimum conditions, in which the REBCO tape is scribed into a 10-filament structure. Setting lower Bg and higher T is more favorable for enhancing efficiency, whereas the condition of lower Bg and T is more favorable for achieving compactness and lightness.

ジャーナルIEEE Transactions on Applied Superconductivity
出版ステータス出版済み - 6 2018

All Science Journal Classification (ASJC) codes

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学
  • 電子工学および電気工学


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