Simulation of three phase photovoltaic inverter control for grid connected system

This paper presents a control scheme for a three-phase grid-connected photovoltaic (PV) system operating in a grid connection and isolated grid mode. Control techniques include voltage and current control of grid-connected PV inverters. In the grid-connected mode, the grid controls the amplitude and frequency of the output voltage of the PV inverter. The inverter operates in the current control mode. During the operation of the isolated power grid, the PV inverter is operated in the voltage control mode to maintain both ends of the load Constant amplitude and frequency of voltage.