A new fuzzy-based maximum power point tracker for photovoltaic applications

A new fuzzy maximum power point tracker (MPPT) for photovoltaic systems is proposed. Fuzzy controller input parameters dI dP، ) dI dP (D and variation of duty cycle (DC D) are used to generate the optimal MPPT converter duty cycle، such that solar panel maximum power is generated under different operating conditions. A photovoltaic system including a solar panel، a fuzzy MPP tracker and a resistive load is designed، simulated and constructed. The fuzzy MPP tracker includes a buck dc/dc converter، fuzzy controller and interfacing circuits. Theoretical and experimental results are used to indicate the advantages and limitations of the proposed technique.