Position Sensing Induced Parasitic Torques in Permanent Magnet Synchronous Motor Drives

Abstract

An analytical model for predicting the parasitic current and torque ripples generated in permanent magnet synchronous motor (PMSM) drives due to different types of errors or non-idealities in sine-cosine type position sensors is presented in this paper. The analytical models are extensively validated with simulation and experimental results on a practical PMSM drive.