Modelling Polycristallin Photovoltaic Cells Using Design of Experiments

Photovoltaic energy has nowadays an increased importance in electrical power applications. However, the output power provided via the photovoltaic conversion process depends on solar irradiation and temperature. Tracking the maximum power point (MPP) ofphotovoltaic (PV) systems is the most important part ofthe PV systems. Inthis paper, modeling and parametersextraction method are proposed to describe the optimal current, voltage and power of the photovoltaic cells. The aim is to find a formula that considers these factors and to study the interactions between these various factors. Design of experiments is a powerful tool to understand systemsand processes. Experiments are often run so that the effect of one factor is unknowingly confused with the effect of another factor. A brief comparison between the classic modeling is presented. In order to model the optimal current, optimal tension and optimal power, a methodology of experimental design is presented. The obtained results show the merits of the proposed mathematical model, which makes the study of the interactions between various climatic factors possible.