Numerical and Experimental Analysis of Torsional Vibration and Acoustic Noise of PMSM Coupled With DC Generator

The magnetic field inside a machine is responsible for the mechanical excitation of the stator structure, generating vibrations and thus, audible noise. In this article, the Permanent Magnet Synchronous Motor (PMSM) is driven by using sinusoidal pulsewidth modulation technique and then an investigation (cause and effect) of Acoustic Noise and Vibration (ANV) is presented. An equivalent lumped para...