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

S. Odaka, S. B. Kim, Atsushi 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

    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, S. B.; Ishiyama, Atsushi; 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, S. B. ; Ishiyama, Atsushi ; 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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