Proceedings of the Korea Institute of Applied Superconductivity and Cryogenics Conference (한국초전도저온공학회:학술대회논문집)

The Korean Society of Superconductivity and Cryogenics (한국초전도저온학회)
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Optimal Design of Multi-Step Current Leads Using HTS Tapes

고온초전도 테이프를 이용한 다단 전류 도입선의 최적설계

  • 김민수 (전남대학교 자동차공학부) ;
  • 나필선 (전남대학교 자동차공학부) ;
  • 설승윤 (전남대학교 자동차공학부)
  • Published : 2001.02.01
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Abstract

The optimum cross-sectional area Profile of gas-cooled high-temperature superconductor (HTS) current lead is analyzed to have minimum helium boil-off rate. The conventional constant area HTS lead has much higher helium consumption than the optimum HTS lead considered in this study. The optimum HTS lead has variable cross-sectional area to have constant safety factor. An analytical formula of optimum shape of lead and temperature profile are obtained. For multi-step HTS current leads, the optimum tape lengths and minimum heat dissipation rate are also formulated. The developed formulations are applied to the Bi-2223 material, and the differences between constant area, constant safety-factor, and multi-step current leads are discussed.

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