期刊
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
卷 15, 期 2, 页码 2831-2834出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TASC.2005.848237
关键词
AC losses; calorimetric measurement; magnetic field; phase relation; transport current
Total AC losses in multi-filamentary, silver-sheathed Bi2Sr2Ca2Cu3Oy (Bi-2223) tape were measured as functions of transport current, applied magnetic field and frequency by electromagnetic and calorimetric methods. Results of both methods agree well with each other. The calorimetric method was employed to investigate the effect of the phase difference between transport current and applied field, Delta phi, on total AC loss. Total loss changes significantly with Delta phi when applied magnetic field is perpendicular to the surface of the sample. The effect of Delta phi on total loss in parallel magnetic applied field is smaller.
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