Abstract：The traditional fault current limiter has poor performance and economy when the fault current of power grid is large. Thus, a novel bridge-type saturated core fault current limiter (BSFCL) was proposed in this paper. Compared with the traditional saturated core fault current limiters, the proposed BSFCL has special bridge-type structure, which can reduce the size and cost of FCL. Moreover, the additional limiting inductor can effectively improve the clipping performance of FCL. Firstly, the principle of BSFCL was analyzed. Then the magnetic circuit model of BSFCL was established, and the performance parameters were analyzed in detail. Accordingly, the field-circuit coupling simulation model of BSFCL was established in Ansoft. Various FEA simulations proved the principle and excellent performance of BSFCL. The effects of different parameters of BSFCL on clipping performance were also analyzed. Finally a 220V/20A experimental prototype of BSFCL was designed. The experimental results verify the effectiveness of the proposed structure.
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2017, Vol. 32 
