• Title/Summary/Keyword: Applied Research

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Design and fabrication of race-track type field coil for the high temperature superconduction generator

  • Baik, S.K.;Jo, Y.S.;Ha, H.S.;Lee, E.Y.;Jeong, D.Y.;Kwon, Y.K.;Ryu, K.S.;Sohn, M.H.
    • 한국초전도학회:학술대회논문집
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    • v.10
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    • pp.248-251
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    • 2000

  • The fabrication and characteristics of HTS race-track type field coil for generators was carried out. Field coils are composed of 3 pancake coils wound by 37-filamental Bi-2223/Ag-alloy tapes. The winding machine is horizontal type. The critical currents (I$_c$) of the superconducting tapes were measured with variation of bending strain and external magnetic fields. I$_c$ of both whole field coils and 3 pancake coils were measured as a function of temperature. At 77K under the self-field, I$_c$ of whole field coils was 12A, while in the case of middle pancake coil, I$_c$ was 15A. The distribution of magnetic field B was obtained, using 3-D FEM. Our simulation showed that maximums of B${\bot}$A in x-y plane were locally distributed in both the upper and the lower coils. In addition, the fabrication processes and the characteristics of field coil are described.

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