Comparative study between PMSM models used for NVH system-level simulation

Modeling of automotive Permanent Magnet Synchronous Machines (PMSM) electric drives for Noise, Vibration and Harshness (NVH) assessment involves modeling different components such as electrical machine, power electronics and controller. The usage of transistors for machine control affects the NVH performance, especially within the switching frequency range. Traditionally the method to include power electronics models is to use co-simulation to couple a circuit simulator with an electromagnetic Finite Element (FE) model. However, this approach is computationally expensive. To overcome this limitation, the electromagnetic behavior of the machine can be approximated by using reduced order models. This work compares the co-simulation approach with the system-level model in terms of high frequency NHV behavior. The comparison provides results in terms of time and accuracy.