Grid-connected PV with maximum power point tracking techniques implemented in real case study of variable radiation

In this paper an accurate PV module electrical model is presented. The method of parameter extraction and model evaluation in Matlab is demonstrated for a typical solar panel. The study presents a comparative study among maximum power point tracking methods for photovoltaic systems. The comparison takes into account dynamic response in a large power range. Computational simulations with fast changes in the solar radiation have been done and the best maximum power point tracking technique is chosen. This paper describes variation of solar radiation over a day and not just a fixed diurnal variation as traditionally done in the past. The results are presented in multiple-curve comprehensive plots.