Degradation of YBCO coated conductors due to an over-current pulse

Atsushi Ishiyama, Michio Arai, Hiroshi Momotari, Xudong Wang, Hiroshi Ueda, Takashi Saito, Yuji Aoki, Masashi Yagi, Takato Machi, Noboru Fujiwara

    Research output: Contribution to journalArticle

    6 Citations (Scopus)

    Abstract

    YBCO coated conductors are candidate materials for future electric power devices such as transmission cables, transformers, and fault current limiters. In practical applications, YBCO coated conductors are subject to short-circuit fault currents greater than the operating current. These fault currents cause heat generation, resulting in degradation of the characteristics of YBCO coated conductors. It is therefore necessary to identify the maximum temperatures under which YBCO coated conductors can operate without suffering degradation. To date, we have carried out preliminary experiments on the degradation of YBCO coated conductors due to an over-current pulse. We also focused on the relationship between increases in temperature and Ic degradation. In this study, we prepared YBCO coated conductors fabricated by TFA-MOD method. We also carried out over-current tests to investigate the Ic degradation and performed numerical simulations on thermal stress to estimate the stress and strain acting on the YBCO layer.

    Original languageEnglish
    Article number5674093
    Pages (from-to)3025-3028
    Number of pages4
    JournalIEEE Transactions on Applied Superconductivity
    Volume21
    Issue number3 PART 3
    DOIs
    Publication statusPublished - 2011 Jun

    Fingerprint

    conductors
    degradation
    Degradation
    pulses
    Electric fault currents
    Fault current limiters
    Heat generation
    Thermal stress
    Short circuit currents
    heat generation
    short circuits
    thermal stresses
    electric power
    Cables
    transformers
    cables
    Temperature
    Computer simulation
    temperature
    causes

    Keywords

    • Degradation
    • Over-current pulse
    • Temperature limitation
    • Thermal stress analysis
    • YBCO coated conductors

    ASJC Scopus subject areas

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

    Cite this

    Ishiyama, A., Arai, M., Momotari, H., Wang, X., Ueda, H., Saito, T., ... Fujiwara, N. (2011). Degradation of YBCO coated conductors due to an over-current pulse. IEEE Transactions on Applied Superconductivity, 21(3 PART 3), 3025-3028. [5674093]. https://doi.org/10.1109/TASC.2010.2092396

    Degradation of YBCO coated conductors due to an over-current pulse. / Ishiyama, Atsushi; Arai, Michio; Momotari, Hiroshi; Wang, Xudong; Ueda, Hiroshi; Saito, Takashi; Aoki, Yuji; Yagi, Masashi; Machi, Takato; Fujiwara, Noboru.

    In: IEEE Transactions on Applied Superconductivity, Vol. 21, No. 3 PART 3, 5674093, 06.2011, p. 3025-3028.

    Research output: Contribution to journalArticle

    Ishiyama, A, Arai, M, Momotari, H, Wang, X, Ueda, H, Saito, T, Aoki, Y, Yagi, M, Machi, T & Fujiwara, N 2011, 'Degradation of YBCO coated conductors due to an over-current pulse', IEEE Transactions on Applied Superconductivity, vol. 21, no. 3 PART 3, 5674093, pp. 3025-3028. https://doi.org/10.1109/TASC.2010.2092396
    Ishiyama, Atsushi ; Arai, Michio ; Momotari, Hiroshi ; Wang, Xudong ; Ueda, Hiroshi ; Saito, Takashi ; Aoki, Yuji ; Yagi, Masashi ; Machi, Takato ; Fujiwara, Noboru. / Degradation of YBCO coated conductors due to an over-current pulse. In: IEEE Transactions on Applied Superconductivity. 2011 ; Vol. 21, No. 3 PART 3. pp. 3025-3028.
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