Modeling and simulation of grid-connected photovoltaic distributed generation system

Compared to the traditional energy resources, photovoltaic (PV) system that uses the solar energy to produce electricity considered as one of renewable energies has a great potential and developing increasingly fast compared to its counterparts of renewable energies. Such systems can be either stand-alone or connected to utility grid. However, the disadvantage is that PV generation depended on weather conditions. Thus there is also a need for developing control techniques for three phase grid connected PV systems including a method for DC link voltage control that can stabilize the voltage at the inverter input. This paper presents detailed modeling of the grid-connected photovoltaic generation system components, in Simulink / MATLAB software. Simulation results presented here validate the component models and the chosen control schemes.