Direct Torque Control for Switched reluctance motor With Multi-level Hysteresis Controller

This paper aims at the problem of large torque ripple caused by hysteresis controller of switched reluctance motor in traditional direct torque control. In order to reduce the torque ripple, a multi-level hysteresis controller based on direct torque control is proposed. By analyzing the basic principle of switched reluctance motor, the torque hysteresis is divided into three levels by using a multi-level control method. While ensuring the rapid response of system torque increase and decrease, it can effectively reduce torque ripple. In this paper, the duty cycle is discretized, and vectors with different amplitudes and phases are used as control vectors, extending the traditional direct torque control switch table. The simulation results show that the control algorithm can effectively reduce the torque ripple.