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Magnetic field analysis of HTS transformer windings with high currents

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7 Author(s)
Min Chen ; Inst. of Electr. Eng., Chinese Acad. of Sci., Beijing, China ; Yu, Y.J. ; Xiao, L.Y. ; Wang, Q.L.
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The leakage magnetic field in HTS transformer windings fabricated by Bi-2223 tapes decreases the critical current and increases the ac losses in the tapes. Because of the anisotropy of the HTS tape, the numerical analysis of the radial component of the leakage field is especially important. In this paper the influence of the core structure and the winding configuration on the stray field is studied by finite element method, and some suggestions for improving the leakage field distribution are presented to make HTS transformers more efficient.

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Applied Superconductivity, IEEE Transactions on  (Volume:13 ,  Issue: 2 )