AC Losses in Bi-2223 Superconducting Wires measured by Magnetization Techniques

자화법에 의한 Bi-2223계 초전도 선재의 교류손실

  • 정종만 (경상대학교 전기공학과(정보통신연구센터)) ;
  • 김영석 (경상대학교 전기공학과(정보통신연구센터)) ;
  • 장현만 (경상대학교 전기공학과(정보통신연구센터)) ;
  • 곽민환 (경상대학교 전기공학과(정보통신연구센터)) ;
  • 백승명 (경상대학교 전기공학과(정보통신연구센터)) ;
  • 최재석 (경상대학교 전기공학과(정보통신연구센터)) ;
  • 김상현 (경상대학교 전기공학과(정보통신연구센터))
  • Published : 1998.07.20

Abstract

Superconducting tape is being developed for electrical equipment such as superconducting transformers and generators. AC loss reduction is primary concern in the development of such high-efficiency equipment. AC losses in Bi-2223 silver-sheathed tapes, both single and multi-filamentary, were investigated by means of AC magnetization techniques. The results were compared with the hysteresis loss equation based on Bean model and the eddy current loss equation. The AC loss, of the mono-filamentary tape was the hysteresis. On the contrary, the AC loss of the multi-filamentary tape was substantially dominated by the eddy current loss in the Ag matrix.

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