Determination of stabilizer thickness for YBCO coated conductors based on coil protection

Y. Kawai, Atsushi Ishiyama, H. Ueda, S. Nagaya, K. Shikimachi, N. Hirano

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    2 Citations (Scopus)

    Abstract

    The possibility of the occurrence of quench caused by mechanical disturbance in high-temperature superconductors (HTS's) is much lower than that in low-temperature superconductors. However, to enhance the reliability and safety of HTS coils, it is necessary to establish a stability criterion and a protection scheme on the basis of the assumption that the quench is caused by the failure in power supply, cooling systems, etc. In this study, we assume that the stored magnetic energy in the HTS coil is dissipated by an external resistance that acts as a quench protection. Under this assumption, we derive a function that examines the heat balance of quenching YBCO coil under an adiabatic condition and propose a criterion using the derived function to determine an appropriate stabilizer thickness of YBCO conductors.

    Original languageEnglish
    Pages (from-to)1865-1869
    Number of pages5
    JournalPhysica C: Superconductivity and its Applications
    Volume470
    Issue number20
    DOIs
    Publication statusPublished - 2010 Nov 1

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    Keywords

    • Coil protection
    • Stabilizer thickness
    • YBCO coated conductor

    ASJC Scopus subject areas

    • Condensed Matter Physics
    • Electrical and Electronic Engineering
    • Energy Engineering and Power Technology
    • Electronic, Optical and Magnetic Materials

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