Journal of Electrical Engineering and Technology

The Korean Institute of Electrical Engineers (대한전기학회)
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Contact Parameter Computation and Analysis of Air Circuit Breaker with Permanent Magnet Actuator

  • Fang, Shuhua (School of Electrical Engineering, Southeast University) ;
  • Lin, Heyun (School of Electrical Engineering, Southeast University) ;
  • Ho, S.L. (Dept. of Electrical Engineering, Hong Kong Polytechnic University) ;
  • Wang, Xianbing (School of Electrical Engineering, Southeast University) ;
  • Jin, Ping (School of Electrical Engineering, Southeast University) ;
  • Huang, Yunkai (School of Electrical Engineering, Southeast University) ;
  • Yang, Shiyou (College of Electrical Engineering, Zhejiang University)
  • Received : 2011.11.14
  • Accepted : 2012.10.24
  • Published : 2013.05.01
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Abstract

An air circuit breaker (ACB) with novel double-breaker contact and permanent magnet actuator (PMA) is presented. Three-dimensional (3-D) finite element method (FEM) is employed to compute the electro-dynamic repulsion forces, including the Holm force and Lorentz force, which are acting on the static and movable contacts. The electro-dynamic repulsion forces of different contact pieces are computed, illustrating there is an optimal number of contact pieces for the ACB being studied. The electro-dynamic repulsion force of each contact, which varies from the outer position to the inner position, is also computed. Finally, the contacts of the double-breaker are manufactured according to the analyzed results to validate the simulations.

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References

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