Three-level microgrid inverter optimization algorithm based on model prediction control

Most microgrid (MG) inverters are based on the voltage and current double loop control structure of PI to achieve control objectives, but the controller parameter setting is complex and the dynamic response speed is slow. In this paper, the predictive model control (MPC) is used to replace the traditional voltage and current double loop modulation for T-type three-level inverter to improve the dynamic response speed and parameter setting. At the same time, aiming at the complexity of online calculation of MPC algorithm of T-type three-level inverter, an optimized algorithm is proposed and the redundant vectors are eliminated in advance, the speed of MPC is increased and improve the total harmonic distortion (THD) of MG inverter output waveform.