摘要：本文开关磁阻电机系统采用无电容裂相式主电路，每相半周期导通。电机内部相绕组线包反相串联，四相绕组星形连接；具体分析了裂相式主电路中点电压脉动的原理，总结出无中点电容电路运行情况，并通过仿真验证了分析的结果；两相同时通电产生转矩，并提出适合于四相无电容裂相式的角度位置控制策略，整个调速范围使用PWM调压控制。最后，通过实验验证，四相无电容裂相式开关磁阻电机系统稳定可靠运行，控制方法可行。

关键词：四相开关磁阻电机; 无电容裂相式主电路; 中点电压; 角度位置控制
Abstract: In the paper, the switched reluctance motor(SRM) system adopted the split converter of no capacitors，and each phase was excited for half of a cycle. The coils were connected in inverting series and the fourphase windings were in star connection. Based on the analysis of the ripple of the neutralpoint voltage, it could conclude the operation of the split converter of no capacitors, and the result was proved by the simulation. It could generate the torque when the two phases were excited at the same time，then it proposed the angle position control(APC) strategy which was suitable for the system. In the entire speed range, it used PWM voltage control. By the experimentations, it proves that the fourphase SRM system in the split converter of no capacitors can operate reliably with feasible controls.
Key words: fourphase switched reluctance motor; split converter of no capacitors;  neutralpoint voltage; angle position control