대한전기학회:학술대회논문집 (Proceedings of the KIEE Conference)
- 대한전기학회 2003년도 추계학술대회 논문집 전기기기 및 에너지변환시스템부문
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- Pages.137-140
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- 2003
3차원 유한요소 해석을 이용한 배선용 차단기의 전자반발력 계산
Calculation of Electrodynamic Repulsion Force in Molded Case Circuit Breakers Using the 3-D Finite Element Analysis
- Kim, Yong-Gi (Electrotechnology R&D Center, LG Industrial System) ;
- Park, Hong-Tae (Electrotechnology R&D Center, LG Industrial System) ;
- Song, Jung-Chun (Electrotechnology R&D Center, LG Industrial System) ;
- Seo, Jung-Min (Electrotechnology R&D Center, LG Industrial System) ;
- Degui, Chen (Xian Jiaotong University)
- 발행 : 2003.10.30
초록
To the optimization design of molded case circuit breakers(MCCBs), it is necessary and important to calculate the electro-dynamic repulsion force acting on the movable conductor. With 3-D finite element nonlinear analysis, according to the equations among current-magnetic field-repulsion force and taking into account the ferromagnet, contact bridge model is introduced to simulate the current constriction between contacts, so Lorentz and Holm force acting on the movable conductor and contact, respectively, can be integrated to calculate. Coupled with circuit equations, the opening time of movable contact also can be obtained using iteration with the restriction of contact force. Simulation and experiment for repulsion forte and opening time of five different configuration models have been investigated. The results indicate that the proposed method is effective and capable of evaluating new design of contact systems in MCCBs.