Experimental Investigation of Torque Ripple Minimization in Three-Phase PMSMs Under Open-Circuit Fault Conditions Utilizing an Adaptive Proportional-Integral-Resonant Controller

This study investigates the reduction of torque ripple in Permanent Magnet Synchronous Motors (PMSMs) during open-circuit fault (OCF) conditions using an adaptive Proportional-Integral-Resonant (PIR) control approach. Torque ripples, commonly exacerbated by faults in motor operation, result in undesirable vibrations, noise, and mechanical stress, thereby impacting the motor’s performance and longevity. The proposed PIR control method integrates a resonant controller with a conventional PI-current controller to enhance torque ripple suppression during OCF operation. Experimental validation, conducted using a dSPACE DS1104 platform, focuses on reducing torque ripple during OCF events. The results show that the adaptive PIR control method significantly reduces torque ripples, thus promoting smoother motor operation, increased efficiency, and increased reliability under fault conditions.