Simulation Implementation of MPPT Design under Partial Shading Effect of PV Panels

Under uniform PV illuminance intensity, only one maximum power peak (MPP) is generated, the traditional MPP tracking methods are easy to find this MPP. However, when a partial shading effect occurs, PV modules will generate maximum power points in many regions, and traditional MPPT methods fall into the local MPP regions easily, resulting in the energy conversion efficiency of the solar array reduces. To avoid this drawback, a hybrid method by combining the incremental conductance method and grey wolf algorithm (GWA) for a DC standalone PV system is proposed. MATLAB simulation results of this system were performed to demonstrate that the proposed hybrid method has obtained global MPP in the cases of the uniform sunshine intensity and the partial shading influence.