Comparison of Three Techniques for Maximum Power Point Tracking of Solar PV

This paper compares three techniques for maximum power point tracking of a solar PV; namely, Fuzzy logic, perturb and observe (P&O) and increment conductance method (IC). It is shown that the Fuzzy control technique gives a better and more reliable performance than the conventional methods. It can track the maximum power point (MPP) faster and minimize the power oscillations around the MPP. The paper also describes how the P&O algorithm gets lost in tracking the MPP under rapid varying irradiance and how the IC is unstable at low irradiance.