Development of kA-class gas-cooled HTS current lead for superconducting fault current limiter

S. Odaka*, S. B. Kim, A. Ishiyama, Y. Sato, S. Honjo, Y. Iwata, S. Shingo

*この研究の対応する著者

研究成果: Article査読

3 被引用数 (Scopus)

抄録

A current lead with kA capacity and small AC loss is being developed for use in superconducting current limiting devices cooled with liquid helium. A gas-cooled type current lead using Bi-based oxide superconducting bulk materials was examined to clarify the effects of the current lead geometry and the use of multiple current leads. This paper presents the results of experiments and numerical simulations based on the finite element method taking consideration of non-uniform transport current distribution among multiple current leads connected in parallel. The simulations are performed to investigate the relationship between the geometry of current leads and the amount of heat flow into a cryostat. In the simulations, the AC loss caused by both mutual and self-induced magnetic fields of multiple current leads is taken into account. The influence of AC loss, the joule heat generated by the contact resistance at joints of NbTi/CuNi multi-strand cables and the HTS bars, and the return passage for gas on the operating characteristics of the HTS current leads are evaluated.

本文言語English
ページ(範囲)491-494
ページ数4
ジャーナルIEEE Transactions on Applied Superconductivity
9
2 PART 1
DOI
出版ステータスPublished - 1999

ASJC Scopus subject areas

  • 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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