Evaluation Methodology of Current Control Techniques for Torque Ripple Reduction in Non-Sinusoidal PMSM

Permanent Magnet Synchronous Machine - PMSM is a viable option for electric vehicle traction. Due to its constructive characteristics, in some cases, the PMSM will have a non-sinusoidal back-EMF, whose main drawback is the presence of torque ripple when vector control techniques are employed. Therefore, several control strategies are proposed in the literature to mitigate this problem and although the strategies in the literature are effective, there is no consensus on how to quantify the torque ripple reduction. In that context, this work proposes an analysis methodology for current control techniques aiming to reduce torque ripple in a non-sinusoidal PMSM, where two welldocumented methods - Extended Park Transform and Petal-Wave will be evaluated through simulation results in distinct points of operation and the torque ripple profile will be obtained, allowing to compare the performance of both strategies.