Abstract: In this paper,the main circuit mathematical model of T-type three-level inverters is established,and a model predictive multiobjective optimal control method for T-type three-level inverters is studied,which mainly includes output voltage control and neutralpoint potential balance control. Firstly,the load voltage and current are sampled,and the output voltage prediction value is calculated by the sampled value. In order to minimize the error between the predicted voltage and the reference voltage,and to measure the neutral point current of the DC bus,the deviation value of the neutral point potential can be obtained. According to the charging and discharging situation of the DC side capacitor corresponding to the switch state,the switching state that reduces the deviation value of the neutral point potential can be optimized and selected,which will be used in the next sampling period. Finally,the method is verified by Matlab/Simulink simulation and experiment. The simulation and experiment results show that the method can realize output voltage control and neutral point potential balance control well,and has the characteristics of simple principle and easy digital implementation.