한국초전도ㆍ저온공학회논문지 (Progress in Superconductivity and Cryogenics)

  • 제11권1호
  • /
  • Pages.30-34
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  • 2009
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  • 1229-3008(pISSN)
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  • 2287-6251(eISSN)
한국초전도저온학회 (The Korean Society of Superconductivity and Cryogenics)
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고온 초전도 전원장치를 이용한 BSCCO Magnet의 충전 및 영구전류 운전 특성

Charging and Persistent-Current Mode Operating Characteristics of BSCCO Magnet Using High-Tc Superconducting Power Supply

  • 조현철 (연세대 대학원 전기전자공학과) ;
  • 양성은 (연세대 대학원 전기전자공학과) ;
  • 김영재 (연세대 대학원 전기전자공학과) ;
  • 황영진 (연세대 대학원 전기전자공학과) ;
  • 윤용수 (안산공과대학 전기과) ;
  • 정윤도 (수원대 공과대학 전기공학과) ;
  • 고태국 (연세대 공과대학 전기전자공학과)
  • 발행 : 2009.03.31
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초록

This paper deals with charging and persistent-current mode operating characteristics of BSCCO magnet load using high-temperature superconducting (HTS) power supply. The HTS power supply consists of two heater-triggered switches, an iron-core transformer with the primary copper winding and the secondary BSCCO solenoid, and a BSCCO magnet load. The magnet load was fabricated by double pancake winding and its inductance is about 21 mH. A hall sensor was installed at the middle of the magnet load to measure the current in the load. In order to investigate the efficient pumping characteristics, operating tests of heater-triggered switch with respect to dc heater current were carried out, and the electromagnet current was determined by considering saturation characteristics of its iron core. The saturation characteristics of charged current in the magnet load were observed with respect to various pumping periods: 12 s, 14 s, 24 s and 32 s. After charging the magnet load, the persistent current was measured. The operating characteristics of the persistent current mode were mainly determined by joint resistance and magnet load.

키워드

참고문헌

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