Simulation and Analysis of Three-phase Four-wire Four-leg APF with Deadbeat Control

In the paper,three-phase four-wire four-leg APF was taken as study object,the i_p-i_q method was chosen to detect harmonic current,and the method of deadbeat control with full-digitalization was adopted in tracking link of order current.The Matlab/Simulink simulation results showed that the active filter system with deadbeat control method can compensate harmonic current well and inhibit neutral current effectively.