Comparison of e-NVH Performance of Different PMSMs in Electric Vehicle Powertrain

The Noise, Vibration and Harshness (NVH) performance of an electric motor is a crucial aspect in the design and analysis of an electric powertrain. Different motor solutions can lead to different NVH figures, since the fundamental frequency of the NVH sources is intimately related to the motor type and geometry. Moreover, the NVH performance of a powertrain is related to the entire drive train and not just the electric motor. For this reason, two electric motors for traction application are compared in terms of both electromagnetic and NVH performance, considering the complete driveline. Furthermore, a review on the computation of electromagnetic forces at the base of the electric-induced NVH (e-NVH) problem is reported.