Advanced Predictive DTC for Double-Star PMSM Using PI-Regulated Switching

This paper proposes an improved Predictive Direct Torque Control (DTC) strategy for Double-Star Permanent Magnet Synchronous Machines (DSPMSMs). Conventional DTC exhibits torque and flux ripples and variable switching frequency due to the use of hysteresis comparators and switching tables. To address these limitations, a hybrid predictive DTC approach is developed by integrating model-based prediction with Proportional–Integral (PI) regulators to maintain constant switching frequency in both inverters. The novelty of this work lies in the real-time coordination of the dual-inverter DSPMSM structure while simultaneously suppressing torque ripple and improving current waveform quality. The proposed control scheme is implemented in MATLAB/Simulink and evaluated under speed reversal and load disturbance conditions, and the obtained results demonstrate significant improvements in torque ripple suppression, current quality, and overall machine performance. These improvements demonstrate the effectiveness of the approach for high-performance electric drive applications. The study is currently limited to simulation validation, and future work will focus on real-time implementation and robustness evaluation under practical machine and inverter parameter uncertainties.