Using Fuzzy Logic Algorithm for reaching the true Maximum Power Point and its Bypass Local of PVG partially shaded
Keywords:
DC/DC converters, photovoltaic generator, partially shaded, algorithms of maximum power point tracking, fuzzy controller.Abstract
The role of MPPT controllers in a PV system is to extract the maximum of power; they are able to reach very good performances when it is about only one peak of power where the irradiation is uniform on all the Photovoltaic Generator (PVG). But if the PVG is partially shaded, the appearance of several peaks of power leaves the conventional controllers unable to find the true Peak of power.
This work presents a thorough study of the phenomenon of the partially shading; its origins, the methods of its evaluation, its modeling and its impact on the output of the PVG; it presents also a simulation under Matlab/Simulink environment of the partially shaded PVG.
MPPT Algorithms improved to detect the real maximum point of power in the case of partial shading, they are synthesized and analyzed and then their simulation of a fuzzy controller MPPT for different levels of shading summarizes the answers which can gives this type of standard controller with fuzzy logic algorithm under such operating conditions.
