Direct Torque Control of Permanent Magnet Synchronous Motor Using Voltage Vector Prediction

In order to suppress the flux and torque ripples of direct torque control (DTC) for permanent magnet synchronous motors (PMSMs), a direct torque control based on voltage vector prediction is proposed in this paper. First, the system model of PMSMs is established. Based on the system model, the voltage vector prediction model is built. The voltage vector predictive torque control algorithm is then designed using the voltage vector prediction model. Moreover, the maximum torque current ratio is deduced applying the defined cost function. Finally, the proposed method is performed via simulation, and the effectiveness of the method proposed in this paper is verified with the comparison results.