Three-level inverter multi-target control method based on model prediction

The invention discloses a model prediction-based three-level inverter multi-target control method adopting optimized pulse width modulation, which comprises the following steps of: weighting a plurality of target functions such as a current error, a switch switching number, a neutral-point potential offset, a difference between a selected switch state and an optimized pulse width modulation switch state and the like to obtain a new optimized function; and carrying out rolling optimization on the three-level inverter, and selecting an optimal vector considering a plurality of optimization targets, thereby carrying out real-time adjustment on the on-off state of the three-level inverter. According to the method, the optimized pulse width modulation of the three-level inverter is combined with a multi-target model prediction algorithm, so that the output of the inverter has good low-order harmonic characteristics under low switching frequency, and also has dynamic current rapid tracking and neutral-point potenti