Fast and Accurate Vibration Response Calculation Procedure for Permanent Magnet Synchronous Machines

The vibration of the stator frame due to electromagnetic forces is one of the main noise and vibration sources of electric machines. In some applications, due to the wide variety of working conditions, design optimizations are not enough, and the control of the machine is needed to reduce vibrations. Therefore, this work presents a reduced model, to be used during the control, which is able to estimate the stator frame vibrations of a Permanent Magnet Synchronous Machine. Finite Element calculations are performed, and the results are saved in Look-Up Tables and implemented in a calculation procedure, allowing a fast and accurate vibration estimation for any input conditions. The proposed model is validated using Finite Element simulations, and it is concluded that it offers high accuracy with a calculation time of a few seconds. Thus, the model developed is suitable to be further developed and implemented in a control procedure.