Maximum power point tracking based on the fuzzy controller in photovoltaic power systems

A new maximum power point tracking (MPPT) algorithm based on the fuzzy logic controller (FLC) is proposed, consisting of a high-efficiency DC/DC buck-boost converter, for the photovoltaic power systems. The proposed fuzzy MPPT algorithm ensures the photovoltaic module always operates at its maximum power point (MPP) as the temperature and insolation vary. We also compare the frequently used hill-climbing MPPT algorithm with ours to emphasize our method’s efficiency and availability. The validity and performance of the proposed algorithm are verified by MATLAB/Simulink simulations.