Optimization of PMSM Performance with Torque Ripple Reduction and Loss Considerations

The performance of an optimized PMSM machine could be improved by using a control-based torque ripple reduction technique. Optimization of PMSM performance including a torque ripple reduction current injection technique and increasing the operating current, while keeping copper losses to a minimum could lead to a larger set of possible optimal solutions. By adding a torque ripple reduction method to the previously optimized geometries that would be not acceptable, they can become acceptable and optimal, with minimum added losses. Combining cases studied through FEM and a splines regression model together, with a non-sorting genetic algorithm, solutions that have injection and no injection are found to be optimal. This allows the designer to have geometries that would otherwise be rejected become acceptable.