Abstract
The initial rotor position of SRM is the key to achieve no-reversing starter. There are some methods to detect the initial position of sensorless SRM. For example, phase current method, phase inductance method, test coil method and so on. In this paper we researched the relationship between the mutual inductance and rotor’s position in SRM. A new initial position detection method of sensor less SRM, which add a excitation pulse with a small value to the stator windings , then detect the value of the mutual inductance voltage of the two adjacent phase to determine the initial position of the rotor is given by this paper. And we designed the hardware to achieve this method. The feasibility and reliability of the method is proved by experiment of 8/6 pole four-phase switched reluctance motor.
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