Multi-Objective Predictive Control for Optimising the Performance of a Two-Segment PMSM Drive

This paper presents a multi-objective predictive control strategy to enhance the performance of a two-segment permanent magnet synchronous motor (TSPMSM) drive by achieving torque ripple reduction, winding current optimization, and switching frequency regulation. By employing a combined set of inverter switching states with controlled switching frequency, the technique achieves harmonic current cancellation for reduced torque ripple while maintaining balanced and efficient winding currents. Simulations demonstrate a 76.5% reduction in torque ripple and significant improvements in total harmonic distortion (THD). The proposed control is particularly advantageous in high-speed applications with high power density, where the stator inductance is small due to the design limitations, and torque ripple reduction is desired without compromising on the converter efficiency.