Implémentation d’une commande MPPT dans une chaine photovoltaïque au milieu Saharien

Abstract

The energy optimization generated by a photovoltaic module is still an attractive research topic for researchers, the research presented in this memoir are part of the photovoltaic energy optimization framework. The adaptation between a PV generator that has a nonlinear behavior and a continuous load is a technical problem that requires the use of a DC-DC converter with a MPPT command to ensure maximum power of the PV generator to the load. Our contribution in this memory is, on the one hand, the improvement of INC Cond conductivity incrementation with the SEPIC converter and a direct GMPPT command used to optimize an autonomous photovoltaic system. The PSO method in this work has been devoted to PV generators under the conditions of abrupt and rapid sunshine changes as well under partial shading conditions, PSC conditions. Simulation and experimental results for a DC / DC boost converter controlled with a PIC16877A low cost microcontroller are presented to validate the analysis and verify the proposed MPPT control performance. The results of the proposed methods show higher MPPT efficiencies and shorter convergence times than conventional methods, even under rapidly changing solar radiation conditions.