Switching Torque Ripple Reduction Using Multi-Modules PMSM Drive

This paper illustrates the method for switching torque ripple reduction using multi-modules PMSM(MMPMSM). General method of switching torque ripple reduction using MMPMSM is 90 degrees phase shift of carrier waveform between two winding modules. This paper analyzes phase current ripple caused by SVPWM to explain why the optimal phase shift angle of carrier wave should be 90 degrees, and then, performs the effect of carrier shift angle for four-modules PMSM drives.