Segmented rotor design of concentrated wound switched reluctance motor (SRM) for torque ripple minimization

摘要

Torque ripple minimization of concentrated wound segmented rotor SRM is achieved through rotor segment designs. Compared to existing ripple minimization techniques the proposed method does not require current profiling, controller complexity or additional converter components. First, an FEA based semi-numerical machine model is developed to identify the torque ripple sources. Next, a new design of rotor segment is presented with segmented dip to effectively minimize torque ripple. Effect of different rotor design parameters on machine performance are studied. Both `one factor at a time' and multi-dimensional, multi-objective optimization of design parameters are performed to evaluate their performances. The optimized design can reduce torque ripple by 29% which is a significant improvement considering the simplicity of this method.