Model Predictive Sliding Mode Control for Three-phase Voltage PWM Rectifier

Three-phase voltage type PWM rectifier with high power output, AC side of low current harmonic characteristics, is widely used in wind power generation, new energy vehicles, and other occasions. Taking the three-phase voltage type PWM rectifier as the research object, the model predictive sliding mode control(MPSMC) is designed for the traditional model predictive PI control(MPPIC), which has the problems of algorithm traversal and optimization computation complexity, and the slower dynamic response and poor anti-interference ability of the outer loop using PI control. By analyzing the working principle of the rectifier and establishing a mathematical model, an optimized model prediction control algorithm is designed to shorten the number of algorithm’s optimization searches and improve the system’s steady-state performance. Meanwhile, in order to improve the robustness of the system, an integral sliding mode control algorithm is designed to replace the traditional PI control of the outer loop. Finally, the simulation and experimental platforms are built, and the results conclude that the designed model predictive sliding mode control(MPSMC) has stronger disturbance resistance and better dynamic and static performances than the conventional model predictive PI control(MPPIC).