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本文介绍了开关磁阻电动机的基本运行原理，分析了IGBT传统驱动元件EXB841和开关磁阻电动机功率电路的原理。对基于EXB841的开关磁阻电动机功率电路进行了设计，并通过OrCAD公司的PSPICE10.5软件对主电路进行仿真，通过对仿真结果波形的分析验证了电路设计的正确性。“,”The basic operation principle of Switched Reluctance Motor(SRM) was described in this paper.The theory of IGBT-based driving component EXB841 and SRM power circuit were also analyzed.The SRM power circuit based on EXB841 was carefully designed and then simulated by PSPICE 10.5 of OrCAD company.Finally,the correctness of the designed circuit was demonstrated through our simulated results.