Hysteretic Dependence of Magnetic Flux Density on Primary AC Current in Flat-Type Inductive Fault Current Limiter with YBCO Thin Film Discs

11th European Conference on Applied Superconductivity

Harada, Masayuki^1 ; Yokomizu, Yasunobu^1 ; Matsumura, Toshiro^1

Department of Electrical Engineering and Computer Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya

464-8603, Japan^1

关键词: AC currents;    Hysteretic dependence;    Inductive fault current limiters;    Magnetic field analysiss;    Pancake coils;    Superconducting state;    Thin layers;    YBCO thin film;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/507/2/022008/pdf
DOI  :  10.1088/1742-6596/507/2/022008

来源: IOP

【 摘 要 】

This paper focuses on a flat-type inductive superconducting FCL (FIS-FCL) consisting of a pancake coil and a YBCO thin layer disc. AC current injection experiments and magnetic field analysis were carried out for two kinds of FIS-FCL, single-disc model and double-discs model. In the former, the pancake coil was putted on the YBCO disc. In the latter, the pancake coil was sandwiched with two YBCO discs. The double-discs model cancels out the magnetic flux density more effectively than the single-disc model. In the double-discs model, the superconducting state period is longer than in the single-disc model. Thus, it may be concluded that the double-discs model is considered to be suitable for FIS-FCL.