Sliding mode control optimization and comparison between PI, Fuzzy and Fuzzy PI controllers photovoltaic current injected to grid

This paper presents a simulation of the operation of a chain of photovoltaic energy connected to a low voltage grid. Starting with the modeling phase of the components of the conversion system, where we modeled the photovoltaic cell (elementary of the solar panel) and the parallel converter DC-DC (Boost) that allows the variation of the value of the capacitor voltage placed to the output of the photovoltaic panel. Then we study the optimization phase with sliding mode control for tracking the maximum power point (VMPP) for extracting maximum power panel solar. In the end, we proceed with the injection of the power grid operated via the inverter, the inverter injects the electric active power operated by controlling the value of the DC bus voltage through a corrector “IP”. Because of the random waveform of the output current of the inverter we are studied the various current controller: PI, Fuzzy and Fuzzy PI the objective is to obtain current inverter output faithfully following a prescribed reference.. The output current should be as sinusoidal as possible with low harmonic distortion as required by the standards of a system of network connection.