Modeling of a single-phase grid-connected photovoltaic system using MATLAB/Simulink

In this paper, a complete simulation model of a single phase grid-connected photovoltaic (PV) system with associated controllers is presented. The simulation model is developed in MATLAB/SIMULINK tool. The main component of the single phase grid-connected PV system are, a PV array, a dc-dc boost converter, a PWM based voltage source inverter and filter. For high efficiency of the PV system used maximum power point tracking (MPPT) algorithm. Simulation studies shows that the sun irradiance are increase so increase the PV array output power and also increase the PQ. PV energy is large than load demand; the excess energy is will exported to the utility.