Modeling and simulation of single phase Grid connected solar photovoltaic system

Photovoltaic (PV) systems are solar energy supply systems, which either supply power directly to an electrical equipment or feed energy into the public electricity grid. In the photovoltaic system, power electronic conversion is necessary to improve the efficiency of PV panels and system stability. In these systems, the backstage power circuit consists of a high step-up DC to DC converter and a full-bridge inverter to convert DC to AC, as the grid voltage is AC in nature. A low pass filter minimizes the Total Harmonic Distortion caused by inverter so that the system is within its acceptable limits. A feedback Control circuit is used in boost converter, so as to regulate the converter output voltage. Control circuit is required to get constant output voltage at load side as PV systems output voltage is continuously varying in nature. This paper highlights the analysis of single phase 1.8 kW Grid connected solar photovoltaic system. System model is formulated and simulation is carried out.