Switched reluctance motor controller with sensorless rotor position detection

摘要: A controller for a switched reluctance motor that does not utilize sensor detecting the rotational position of rotor. The inductance each field winding changes according to rotor is determined by measuring phase during periods when minimum level expected occur. series voltage pulses are applied appropriate period while current produced in response measured. relationship between voltage, measured current, and time, utilized determine value as it decreases then increases positions alignment. Commutation next performed based upon values. More particularly, first pulse an after commutation induced stored across capacitor. Then, subsequent levels compared predetermined threshold. threshold ensures stationary measurements. Once exceeds threshold, level. Upon which exceed value, performed. number degrees rotation removing excitation from alignment with corresponding advance. advance adjusted controlling offset comparing value.