Modeling and control of photovoltaic system using sliding mode controle, comparative studies with conventional controls

摘要

The case studied in this paper relates to the control of a system photovoltaic. As the output characteristic of a photovoltaic (PV) module is nonlinear and changes with solar irradiance and the load, its maximum powerpoint (MPP) is not constant. Therefore, a (MPPT) technique is needed to draw peak power from the PV module to maximize the produced energy and voltage delivered by the PV system constant under varying conditions. In our study, we used two MPPT algorithms, the algorithm 'Perturb and Observe" (P & O), then the algorithm "Increment of Conductance" (IncCond). For this, a control system is presented. The methods used for the simulation of this system are based on the use of a sliding mode control. Simulation results are presented to verify the simplicity, the stability and the robustness of this control technique against changes in weather conditions.