Research on Model Predictive Voltage Control Strategy of Three-Phase Full-Bridge Inverter

Model predictive control (MPC) has shown potential for a wide range of applications in the three-phase full-bridge inverters based on its advantages of easy modelling, excellent dynamic response and rolling optimization. Aiming at the shortcomings of traditional model predictive control that needs to be paired with other controllers, a model predictive voltage control (MPVC) strategy is proposed. This strategy directly controls the output voltage, eliminating the complex outer-loop controller design and simplifying the control process. In order to address the shortcomings of single-vector MPVC, which has a large error between the predicted value and the reference value, a dual-vector MPVC strategy is proposed. This strategy ensures the steady state performance and dynamic performance of the system by improving the number of seeks and increasing the prediction step size. Finally, an experimental platform of three-phase full-bridge inverter is built to validate the proposed strategy.