Progress in Superconductivity and Cryogenics (한국초전도ㆍ저온공학회논문지)

The Korean Society of Superconductivity and Cryogenics (한국초전도저온학회)
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Fabrication of a BSCCO Magnet and its Operating Characteristics of Current Compensation in Persistent Current Mode

BSCCO Magnet 제작 및 영구전류모드에서의 전류 보상 운전 특성

  • 조현철 (연세대학교 전기전자공학과) ;
  • 장기성 (연세대학교 전기전자공학과) ;
  • 장재영 (연세대학교 전기전자공학과) ;
  • 김형준 (연세대학교 전기전자공학과) ;
  • 정윤도 (수원대학교 전기공학과) ;
  • 윤용수 (안산공과대학 전기과) ;
  • 고태국 (연세대학교 전기전자공학과)
  • Published : 2010.03.31
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Abstract

Recently, many researches have been carried out for a high temperature superconducting (HTS) magnet which is advantageous in high critical current density and critical temperature. In HTS magnet, however, critical current is decreased by perpendicular magnetic field and persistent current is hard to maintain due to a low index value and high joint resistance compared with low temperature superconducting (LTS) magnet. In this paper, the HTS magnet using BSCCO wire was simulated through finite element method (FEM) and manufactured. we experimentally investigated operating characteristics of the compensating mode of the HTS magnet for current decay and made a comparison between persistent current mode and compensating mode. A feedback control unit was used to sustain current within specified ranges with defined upper and lower limits.

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References

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