Current Limiting Characteristics of Separated Three-phase Flux-coupling Type SFCL according to Winding Number of Coil 2 and Winding Direction

삼상 분리형 자속커플링 전류제한기의 2차 권선의 턴 수 및 결선 방향에 따른 전류제한 특성

  • 김용진 (전북대학교 전기공학과) ;
  • 두호익 (전북대학교 전기공학과) ;
  • 두승규 (전북대학교 전기공학과) ;
  • 김민주 (전북대학교 전기공학과) ;
  • 이동혁 (전북대학교 전기공학과) ;
  • 한병성 (전북대학교 전기공학과)
  • Published : 2009.08.01


The separated three-phase flux-coupling type superconducting fault current limiter(SFCL) is composed of a series transformer and superconducting unit of the YBCO coated conductor. The primary and secondary coils in the transformer were wound in series each other through an iron core and the YBCO coated conductor was connected with secondary coil in parallel. In this paper, we investigated the current limiting characteristics through winding number of coil 2 and winding direction in the flux-coupling type SFCL. Through the analysis, it was shown that additive polarity condition and lower winding number of coil 2 have advantaged from the point of view of fault current limiting and burned of YBCO coated conductor.


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