以开关磁阻电机(switched reluctance machine，SRM)的非线性模型为仿真平台，给出一种用于检测SRM转子初始角位置的新方法，向电机各相注入一定幅值的方波电压，利用相电流峰值及其与转子角位置之间的解析关系式求出转子的初始角位置，从而实现转子处于任何位置时的快速无反转起动。同时，对该位置检测方法的鲁棒性进行了研究，得到了预估相的选取原则。以一台三相6/4极SRM为对象进行了相关实验，实验结果验证了该位置检测方法的可行性及预估相选取原则的正确性。

A novel method for the estimation of the initial rotor position in a sensorless switched reluctance motor (SRM) was introduced per nonlinear simulation. The phase winding was energized by the narrow voltage pulse. The peak phase current was detected, and then the rotor position could be obtained through the analytical expression between the peak currents and the rotor position. The start-up of position sensorless SRM without reversing could be achieved. At the same time, the robustness of this method was studied and the principle for the selection of testing phase was obtained. Correlative experiments were implemented with a three-phase 6/4-pole SRM prototype. The experimental results verify the feasibility of this method and the principle of testing phase selection.