MPPT techniques for PV systems

This paper propose a detailed comparative survey of four maximum power tracking techniques: Perturb and Observe (P&O), Incremental Conductance (InC), fuzzy logic based tracking technique and a, less known, method using only the photovoltaic current measurement. The drawback of the three studied methods; P&O, InC and one sensor algorithm, is that at steady state the operating point oscillate around the maximum power point, giving rise to the waste of the output panel´s available energy. Simulation results show that the proposed fuzzy logic controller (FLC) can provides faster and stable tracking maximum power as compared to the other studied methods.