Optimum Design of a Shield Plate to minimize Extremely-Law-Frequency Magnetic Fields produced by Bus Bars

분전반 모선에 의해 발생되는 극저주파 자기장 저감을 위한 차폐판 최적 설계

  • 정기우 (경북대학교 전기공학과) ;
  • 최낙선 (경북대학교 전기공학과) ;
  • 김동훈 (경북대학교 전기공학과) ;
  • 장낙원 (해양대학교 전기공학과) ;
  • 이동영 (위덕대학교 전기공학과)
  • Published : 2009.01.01

Abstract

This paper deals with the optimal design of a shield plate in order to minimize Extremely-Low-Frequency(ELF) magnetic fields generated from three-phase bus bars. Combining an evolutionary strategy with a 3D finite element analysis tool, the main dimensions of the shield plate are sought out. The optimization procedure consists of two separated design stages to take into account all foreseen structures of the plate. In the first stage, the basic dimensions of the plate are optimized including the distance between the plate and the bus bars. Then the usefulness of the additional structures such as a slit and fillet is investigated in the second stage. Finally the optimum design of the shield plate is suggested from the viewpoint of the shielding effectiveness and manufacturing cost.

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