Two Stage Power Conversion For Grid Connected PV Using Current Control Technique

Abstract

In this paper, the analysis and simulation of grid connected two stage PV system using inverter and its related controller is presented. A MATLAB SIMULINK based model is developed for the grid connected two stage PV-system using inverter. From the PV panel maximum power needs to be drawn and injected to the grid in a grid connected photovoltaic system. Different MPPT topologies and control methods are available in literature. By using the Perturb and Observe MPPT algorithm in this paper, from the photovoltaic panel maximum power is obtained. To the inverter from the photovoltaic module, a DC input voltage is fed and a controlled AC output power is obtained by adjusting Id and Iq. The results obtained confirm controller performance is adequate under varying solar irradiance.