Experimental validation of a photovoltaic panel model

Abstract

For operation optimizing, it's important to have internal parameters of a photovoltaic (PV) panel. Experimental measurements were carried out, in order to determine a PV panel internal parameters. From simple measurements, two resistances values: series Rs and shunt Rsh have been determined. The two experimental characteristics I-V and P-V have been plotted. And afterward, the system operation has been simulated in Matlab Simulink, to validate the model. Otherwise, PV current equation resulting from the PV cell model has been used to determine 5 parameters. A Matlab program has been developed with the function "fsolve" for solving the system of five equations with five unknowns. Theoretical values were compared with experimental results.