Improvement photovoltaic system provided buck converter assuring optimum functioning independently

摘要

In this paper, we analyze the conception, the realization, and the optimization of a photovoltaic system (PV) adapted by a converter DC / DC of Buck type and an analogical MPPT command provided with a detection circuit of the dysfunction and convergence of the system (CDCS). The CDCS circuit allows assuring an optimal functioning of the PV panels independently in the variations of the conditions meteorological (illumination, the temperature) and of the load. From the modeling of the optimal functioning of PV panels and the complete system in the simulator Pspice, we showed the good functioning of the system PV conceived and realized during this work. During whole days of functioning, we showed that the efficiency on the converter is very satisfactory (of the order of 80 %) and the electric losses of power supplied by the PV panel are lower than 8 %.