Partial Shading Detection and Global MPPT Algorithm for PV System

This paper proposes a partial shading detection and model free global maximum power point tracking (GMPPT) algorithm for a photovoltaic array system. The proposed algorithm is decomposed of three parts: searching part, tracking part, detecting and avoiding the dead points in the partially shaded P-V curve, if exists, part. Simulation results with comparisons with the state of art methods are provided to highlight the fruitiness to the proposed GMPPT algorithm.