Transient stability analysis of large aluminum stabilized superconductor by 2D and 3D finite element analysis

Tomokazu Tsuchiya, So Noguchi, Hideo Yamashita, Atsushi Ishiyama, Nagato Yanagi, Toshiyuki Mito

    Research output: Contribution to journalArticle

    6 Citations (Scopus)

    Abstract

    Very-large-current composite superconductors are used in SMES coils and fusion applications. These superconductors have large cross-sectional areas of high purity aluminum to improve their stability. Once a normal zone is initiated in such superconductors, the current transfers from the superconducting strands to the aluminum stabilizer according to the Maxwell's equations and the temperature distribution. However, the time constant of current diffusion in the aluminum stabilizer is very long as electrical resistivity of aluminum is very low. Therefore, excess Joule heating is generated in a small region of aluminum stabilizer near superconducting strands, and the temperature increases locally. Some 2D numerical analyses have been carried out in order to investigate the transient stability of the superconductor applied to the Helical Coil of LHD in National Institute for Fusion Science. But, as the performance of computers have improved, huge numerical simulations are new feasible. So we wrote a 3D finite element analysis code ourselves to carry out some now analyses that we compared with 2D analysis.

    Original languageEnglish
    Pages (from-to)1330-1333
    Number of pages4
    JournalIEEE Transactions on Applied Superconductivity
    Volume14
    Issue number2
    DOIs
    Publication statusPublished - 2004 Jun

    Fingerprint

    Aluminum
    Superconducting materials
    aluminum
    Finite element method
    strands
    coils
    Fusion reactions
    fusion
    Joule heating
    Maxwell equations
    Maxwell equation
    time constant
    purity
    Temperature distribution
    temperature distribution
    electrical resistivity
    composite materials
    Computer simulation
    Composite materials
    simulation

    Keywords

    • 3D numerical analysis
    • Aluminum stabilized superconductor
    • Minimum normal-zone propagation velocity
    • Transient stability

    ASJC Scopus subject areas

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

    Cite this

    Transient stability analysis of large aluminum stabilized superconductor by 2D and 3D finite element analysis. / Tsuchiya, Tomokazu; Noguchi, So; Yamashita, Hideo; Ishiyama, Atsushi; Yanagi, Nagato; Mito, Toshiyuki.

    In: IEEE Transactions on Applied Superconductivity, Vol. 14, No. 2, 06.2004, p. 1330-1333.

    Research output: Contribution to journalArticle

    Tsuchiya, Tomokazu ; Noguchi, So ; Yamashita, Hideo ; Ishiyama, Atsushi ; Yanagi, Nagato ; Mito, Toshiyuki. / Transient stability analysis of large aluminum stabilized superconductor by 2D and 3D finite element analysis. In: IEEE Transactions on Applied Superconductivity. 2004 ; Vol. 14, No. 2. pp. 1330-1333.
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    AU - Ishiyama, Atsushi

    AU - Yanagi, Nagato

    AU - Mito, Toshiyuki

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