一种基于MOSFET开关的直流快速接触器驱动电路分析与计算

Analysis and calculation of DC fast contactor drive circuit based on MOSFET switch

本文介绍了基于MOSFET开关的直流快速接触器驱动电路,通过Matlab对不同拓扑结构的MOSFET开关导通时序和线圈电流进行仿真,提出了一种具有导通MOSFET开关管和续流MOSFET开关管双管拓扑结构的接触器线圈驱动电路,仿真分析表明该驱动电路可降低接触器线圈续流时间,提高接触器开断速度。

This paper introduces the drive circuit for DC fast contactor based on MOSFET switch.By simulating the timing sequence and coil current of MOSFET switch with different topologies by matlab,a dual-tube switch with a turn-on MOSFET switch tube and a freewheeling MOSFET switch tube is proposed.The simulation analysis shows that the drive circuit can reduce the freewheeling event of contactor coil and improve the switching speed of contactor.