Photovoltaic Maximum Power Point Tracker for a Multiple-Input SEPIC Under Partial Shading Condition

The power produced from solar panels depends on irradiation, temperatures, number of cells, and aging impact. Moreover, extracting maximum power from solar cells is independent of load. Therefore, a maximum power point tracker (MPPT) is essential to maximize the output power from a photovoltaic (PV) module. The incremental conductance, and the equilibration algorithms have been applied to extract the MPP under partial shading condition. Partial shading on solar panels causes the power-voltage curve to have different local maximal points Among them, the largest MPP, the global maximum point, should be extracted. In this paper, a multiple-input single-ended primary inductance converter (SEPIC) is chosen to combine PV modules with an alternative source because it provides a continuous input current, and full MPP tracking range.