A Novel voltage-profiling method to minimize torque ripples in srm based vehicle propulsion systems

Switched reluctance motor based power train systems have been popularly proposed for HEV propulsion in recent times, especially due to their excellent extended speed-range characteristics. At the same time, inherent torque ripples of SRMs present a significant drawback. Classic current profiling torque ripple minimization techniques do not achieve satisfactory levels of torque ripples, especially for automotive propulsion applications. This paper proposes a new phase-voltage profiling technique, which combines the advantage of using a simpler controller, with particularly low levels of torque ripple in the whole speed range. Finally, a simplification of the method is presented, which could be extended to future work. Index Terms-Electric propulsion, electric vehicles, reluctance motor drives, torque control, traction motor drives.