Modeling and control of three-phase grid-connected photovoltaic inverter

Abstract

This paper presents mathematical modeling procedure of three-phase grid-connected photovoltaic inverter. This paper presents synchronous PI current control strategy and the method for adjuster design. The typical waveforms of grid voltage, current and harmonics of grid current are carried out in a 100kW photovoltaic inverter, which can provide some guidelines for engineers to analyze, design and implement.