The grid-connected technology of three-level inverter based on model predictive control is of great significance in the research of microgrid. The traditional finite set model predictive control technology has been proved more, but its calculation is large, the efficiency is low, and compared with the traditional space vector modulation technology, the output current or voltage waveform harmonic contains more, the quality is poor. In order to solve this problem, a model predictive control strategy is proposed to improve the output waveform quality by eliminating voltage in the cost function by differentiating and reducing the number of cycles. Finally, the method is simulated in Simulink software and verified on the experimental platform to verify the feasibility of the method.

Model Predictive Control,Active Neutral Point Clamped Inverter,Partial-Derivative