Control Structure for a Photovoltaic Chain Connected to the Three-phase Grid

This paper aims to model a photovoltaic panel and control it when connecting to the three-phase grid. The system contains a photovoltaic panel and a boost converter (DC/DC) controlled by maximum power point tracking (MPPT) used perturbation and observation algorithm (P & O). Its purpose is to extract the maximum power from the solar panel. The assembly is connected to the grid via a voltage inverter and a low-pass filter (L r) in order to inject the active power of the photovoltaic into the three phase grid. The regulation of the voltage Vdc, the direct and quadratic component of the currents is carried out by a classic regulator (PI). The model is simulated using MATLAB Simulink.