Progress in Superconductivity and Cryogenics (한국초전도ㆍ저온공학회논문지)

The Korean Society of Superconductivity and Cryogenics (한국초전도저온학회)
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AC loss Characteristics under Critical Current Degradation of HTS Tapes

고온 초전도 tape의 임계전류 저하에 따른 교류손실 특성

  • 김해준 (한국전기연구원 초전도응용그룹) ;
  • 조전욱 (한국전기연구원 초전도응용그룹) ;
  • 김재호 (한국전기연구원 초전도응용그룹) ;
  • 심기덕 (한국전기연구원 초전도응용그룹) ;
  • 곽동순 (한국전기연구원 초전도응용그룹) ;
  • 배준한 (한국전기연구원 초전도응용그룹) ;
  • 김해종 (한국전기연구원 초전도응용그룹) ;
  • 성기철 (한국전기연구원 초전도응용그룹)
  • Published : 2005.09.01
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Abstract

Critical current$(I_c)$ degradation of High $T_c$ Superconducting(HTS) tapes and AC loss under mechanical load is one of the hottest issues in HTS development and application. Mechanical load reduces the critical current of superconducting wire, and the $I_c$ degradation affects the AC loss of the wire. We measured the $I_c$ degradation and AC loss under tension and bending of Bi-2223 tapes made by 'Powder-in-Tube' technique at 77K with self-field. Also, we have studied the frequency characteristics on self-field AC loss in multi-filamentary Bi-2223/Ag tape at 77K. The measurement results and discussions on the relationship between $I_c$ degradation and AC loss are presented.

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