The research of stator current oriented method of switched reluctance motor

This paper presents a novel control method of switched reluctance motor (SRM) along with stator current oriented method. This method will minimize the torque ripple while reducing the step angle. By analyzing the current of SRM in terms of torque and rotor position, a current distribution function can be acquired. Then a nonlinear magnetizing model is used to detect rotor position. The current distribution function will decide the given current of corresponding stator winding with the current position information by the nonlinear magnetizing model and the expected position information. By this method, the SRM will be stabled at expected position with expected torque. It has been experimentally verified that this method can effectively reduce the torque ripple and improve the position precision of the servo control system.