A Simple Method to Reduce Torque Ripple of SR Motor Using Freewheeling Mode

Switched reluctance motors (SR motors) have many advantages such as simple and solid construction, low cost on manufacturing, high reliability in high temperature, and large torque density. But, the higher torque ripple from magnetic saliency is a serious problem to prevent from expanding its applications. In the paper, we propose a new method to reduce torque ripple using freewheeling mode. The method only needs changing timing of switching. So, it is easy to implement at the low cost systems. We will clear some interesting results from FEM simulations and experiment.