Fuzzy Based Maximum Power Point Tracking of PV Array under Non-uniform Irradiance Conditions

Abstract This paper presents a fuzzy based maximum power point algorithm for PV arrays. Because of the nonlinearity of the voltage-current characteristics in PV array, it is hard to decide logically the working voltage corresponding to MPP changes with change in solar irradiance and cell temperature, particularly in the case of partial shading conditions. The proposed fuzzy based MPPT can track the maximum power quickly and also can work under partial shading conditions. Simulation results demonstrate that the fuzzy based MPPT has better performance than the perturbation and observation (P&O) method.