Optimal design and dynamic characteristic analysis of a new type electric actuator for high voltage circuit breaker

In this paper, a new type electric actuator, electro magnetic force driving actuator (EMFA), is developed and analyzed, applicable to high voltage gas circuit breaker (HGCB). Transient analysis is performed in order to obtain the dynamic characteristics of the EMFA. The distribution of static magnetic flux is obtained using the finite element method (FEM). The coupled problems of electrics and mechanics governing equations are solved using the time difference method (TDM). Fabrication and experiments were performed in order to prove the applicability of HGCB for overall class. In comparing the experiment with simulated data, it is confirmed that analysis of the dynamic characteristics of EMFA is appropriate for design. Index Terms-dynamic characteristics, electromagnetic force driving actuator (EMFA), finite element method (FEM), time difference method (TDM).