Analysing the Impact of Skewing Techniques for Cogging TorqueReduction in PM Synchronous Motor Design for Electric Vehicles

Abstract

The paper aims to explore and analyze the various skewing techniques used for reducing cogging torque and torque ripple in permanent magnet synchronous motor (PMSMs) design for electric vehicles. The cogging torque, a phenomenon resulting from the interaction between permanent magnets on the rotor and teeth on the stator, causes higher torque ripple and affects overall performance and efficiency of PMSMs. This paper focuses on evaluating the effectiveness of different skewing techniques, including linear skewing, step skewing, and V- skewing, in mitigating cogging torque and reduction in torque ripple. The proposed method is investigated through static and time stepping finite element analysis (FEA) simulations. The results show a significant reduction in the cogging torque and torque ripple, resulting in improved performance of the MPSM motor. This study highlights the effectiveness of the linear skewing technique for cogging torque reduction in PMSMs, which can lead to better motor efficiency and performance.