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

S. Odaka, Seok Beom Kim, A. Ishiyama, Y. Sato, S. Honjo, Y. Iwata, S. Shingo

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)491-494
Number of pages4
JournalIEEE Transactions on Applied Superconductivity
Volume9
Issue number2 PART 1
DOIs
Publication statusPublished - 1999
Externally publishedYes

Fingerprint

Superconducting fault current limiters
Lead
Gases
gases
Helium
Cryostats
Geometry
Contact resistance
Oxides
alternating current
Cables
Magnetic fields
Heat transfer
Finite element method
Computer simulation
Liquids
simulation
Experiments
cryostats
current distribution

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Physics and Astronomy (miscellaneous)

Cite this

Development of kA-class gas-cooled HTS current lead for superconducting fault current limiter. / Odaka, S.; Kim, Seok Beom; Ishiyama, A.; Sato, Y.; Honjo, S.; Iwata, Y.; Shingo, S.

In: IEEE Transactions on Applied Superconductivity, Vol. 9, No. 2 PART 1, 1999, p. 491-494.

Research output: Contribution to journalArticle

Odaka, S. ; Kim, Seok Beom ; Ishiyama, A. ; Sato, Y. ; Honjo, S. ; Iwata, Y. ; Shingo, S. / Development of kA-class gas-cooled HTS current lead for superconducting fault current limiter. In: IEEE Transactions on Applied Superconductivity. 1999 ; Vol. 9, No. 2 PART 1. pp. 491-494.
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