Robust Torque Ripple Mitigation of a Line-Start PMSM by Means of the Taguchi Method

In this paper, a robust design framework is proposed to mitigate torque ripple for line-start permanent magnet synchronous machines (LS-PMSM) by using the Taguchi method. The framework is intended for fine-tuning initial optimum designs to further improve the steady-state torque quality of LS-PMSMs. The proposed framework was successfully implemented on an LS-PMSM design. A notable decrease in steady-state torque ripple was achieved without a significant reduction in steady-state performance and transient load synchronization capability. It has been shown that the proposed robust torque ripple mitigation framework is both functional and time efficient and can be applied to a wide range of electrical machines.