Active power filter is one of the key devices to improve power quality of power network. As for such problem as multiple number of rolling optimization

long operation time of program and high switching loss in the traditional model current prediction and control method of three-level active filter

a kind of current prediction and control method of three-level active filter multiple target model based on partition judgment is studied. Firstly

partition judgment for the reference voltage is performed

then the sector of the optimal switching state subset is determined and

on this basis

to perform rolling optimization and

at the same time

with consideration of switch loss

the average switching frequency constraint is introduced in the value function. This method can not only reduce operation time of the program

but also reduce the average switching frequency at the condition of not affecting the comp-ensation effect.Finally

the correctness and effectiveness of the method are verified by simulation and experiment.