Model Predictive Direct Torque Control Based on Active Disturbance Rejection Controller for PMSM

Abstract

Model predictive direct torque control (MPDTC) is a powerful control scheme for PMSM, which has a strong ability to handle various nonlinear constraints. However, in traditional model predictive direct torque control (T -MPDTC), the reference torque generated by the speed PI controller, which is sensitive to load torque variation and internal parameter perturbation, and the performance degrades if a mismatch exists between the model parameters and the actual machine parameters. To solve the aforementioned problems, model predictive direct torque control based on active disturbance rejection controller (ADRC-MPDTC) is proposed in this paper. Firstly, the proposed control strategy, including the design of the active disturbance rejection controller and a novel cost function, is introduced. Secondly, the simulation results validate the performance of the proposed control scheme.