A model predictive torque control strategy of PMSM with torque deadbeat duty cycle control

Abstract

Model predictive torque control (MPTC) of permanent magnet synchronous motor (PMSM) is accurate and effective in voltage vector selection by a cost function. However, the traditional MPTC lead to large torque and flux linkage ripples due to the limited number of the voltage vector for the two-level inverter. In this paper, an improved MPTC strategy with torque deadbeat duty cycle control is proposed. In this method, an optimal voltage vector would be selected by the cost function firstly, and then the duty cycle of the selected voltage vector is calculated based on torque deadbeat control. Simulation results show that the proposed method can obviously reduce the torque ripples and improve the steady-state performance.