Dual-Winding Permanent Magnet Synchronous Motor System Based On Carrier Phase-Shift PWM Torque Ripple Suppression Effect Analysis

High order current harmonics in PWM drive system will affect the performance of permanent magnet synchronous motor, resulting in motor torque pulsation and vibration; In order to harness the degree of freedom brought by the double-winding permanent magnet synchronous motor system for more intricate motor control, the paper proposes carrier phase-shift modulation technology, which significantly reduces the output torque ripple of the dual-winding permanent magnet synchronous motor system by exploiting the current harmonic offset of the topology of two inverters. Additionally, the paper discusses the application of MTPA (Maximum Torque Per Ampere) and Field weakening Control in dual-winding motor systems, integrating them with carrier phase-shift modulation for motor system control. The suppression effects in low-speed and high-speed regions are validated through finite element simulation. Finally, experimental verification of this suppression method is conducted using the StarSim hardware-in-the-loop (HIL) semi-physical motor simulation platform.