A comparative study of pre-computed current methods for torque ripple minimisation in switched reluctance motor

One of the few drawbacks of the switched reluctance motor (SRM) is the high torque ripple when compared to the conventional AC and DC drives. In this paper, some of the pre-computed current methods for torque ripple minimisation in SRM are compared with the method proposed by the authors. The approach to the problem of finding the current trajectories to minimise the torque ripple in different proposed schemes are briefly explained. For all the schemes considered for comparison, the current trajectories are computed using the test data available for a 4 kW 8/6 pole SRM. A comparative study is made using simulation results.