한국초전도학회:학술대회논문집

한국초전도학회 (The Korean Superconductivity Society)
권호 표지

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

  • Baik, S.K. (Applied Superconductivity Research Group, Korea Electrotechnology Research Institute) ;
  • Jo, Y.S. (Applied Superconductivity Research Group, Korea Electrotechnology Research Institute) ;
  • Ha, H.S. (Applied Superconductivity Research Group, Korea Electrotechnology Research Institute) ;
  • Lee, E.Y. (Applied Superconductivity Research Group, Korea Electrotechnology Research Institute) ;
  • Jeong, D.Y. (Applied Superconductivity Research Group, Korea Electrotechnology Research Institute) ;
  • Kwon, Y.K. (Applied Superconductivity Research Group, Korea Electrotechnology Research Institute) ;
  • Ryu, K.S. (Applied Superconductivity Research Group, Korea Electrotechnology Research Institute) ;
  • Sohn, M.H. (Applied Superconductivity Research Group, Korea Electrotechnology Research Institute)
  • 발행 : 2000.08.16
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초록

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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