Research on Single-Phase Grid-Connected Inverter Based on PR Regulator

Inverter adopts PR controller to realize the control of current without static difference. Taking single-phase full-bridge inverter as the research object, the mathematical model of single-phase grid-connected inverter is analyzed, in order to realize grid-connected inverter. The static control of the output AC current is designed. A PR controller is designed. The current loop simulation model is built by Matlab/Simulink. The results show that the proportional resonance (PR) control can realize the static-free control of the fundamental sinusoidal current.