Abstract：A new method for sensorless control of switched reluctance motor(SRM) at low or middle speed is presented in this paper. This new method is appropriate for chopping model. Via injecting voltage pulse into the idle phases of 12/8 motor, the current slope of three phases can be detected at real time; those discrete results which rising current slope minus falling current slope are filtered to form three envelope curves. The curves are related to phase inductance, so it is convenient to confirm some special rotor positions through these curves’ intersection points. Other positions can be confirmed after calculating the speed. The advantages of control strategy are also listed. Simulation and experimental results show that the proposed method is effective.
毛宇阳, 邓智泉, 蔡骏, 彭晶晶. 基于电流斜率差值法的开关磁阻电机无位置传感器技术[J]. 电工技术学报, 2011, 26(9): 87-93.
Mao Yuyang, Deng Zhiquan, Cai Jun, Peng Jingjing. Sensorless Control of Switched Reluctance Motor Based on Current Slope Difference Method. Transactions of China Electrotechnical Society, 2011, 26(9): 87-93.
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2011, Vol. 26 
