An Incremental Conductance Method Based on Fuzzy Control

Abstract

In order to make full use of solar energy in photovoltaic power generation system, maximum power point tracking (MPPT) is usually required. However, traditional incremental conductance method (INC) with fixed step size can't balance both tracking speed and tracking accuracy, and misjudgment may occur when the environment changes abruptly. To solve the above problems, this paper proposes an incremental conductance method based on fuzzy control. In this method, to track the maximum power point quickly and accurately, the fuzzy controller can adjust the step size automatically according to the information of voltage and power. In addition, we make full use of the fuzzy control rules to improve the anti-interference ability of the system. Finally, a simulation is carried out in Matlab/Simulink. The results show that this method can achieve MPPT quickly and accurately, which has a strong anti-interference ability.