Application of a maximum torque per ampere control strategy for DSRM drives

Discrete-switched reluctance machine (DSRM) drives represent a new class of reluctance machine in which stator phases are magnetically independent of each other. This machine type is very suitable for in-wheel propulsion applications such as those in the automotive area. Due to the absence of mutual coupling between windings there are many possible control strategies that may be employed for control, and that furthermore may be simplified in nature with respect of conventional machine topologies. This work presents a maximum torque per ampere control strategy that seeks to minimize the rms phase current at all angles for a given torque, thus providing the basis for an efficient machine. This work will be specifically applied to a 5-phase DSRM.