Fuzzy-Logic Based INC MPPT Method for Photovoltaic Systems

Nowadays the solar energy is widely used for electricity generation due to technological development. The renewable energy sources must be used for the technology such as electric vehicles in order to reduce the pollution level. So it is important to increase the efficiency and effectiveness of the renewable energy systems. This paper presents a design of a fuzzy logic based variable step size incremental conductance MPPT method for photovoltaic system. The fuzzy inputs are derived from the slope of PV curve of photovoltaic module namely current-voltage ratio and its derivatives. The simulation of the proposed system is designed in MATLAB SIMULINK. The result shows that the proposed MPPT method is able to track accurate MPP with nearly zero oscillations in PV power.