Simplified model of a photovoltaic module

Abstract

The cost and the performance of PV plants strongly depends on modules. However, the electrical parameters of the modules can be different from those provided by the manufacturer; moreover, such parameters can change as the module is getting older. Therefore, the behavior of the mathematical model of a PV module can-t match the real operating conditions. The paper proposes an improved model of a PV module that make use only parameters provided by manufacturers datasheets without requiring the use of any numerical methods. In the paper after the detailed description of the proposed model, different simulation results are pointed out. Finally a suitable procedure that permits to account the real operating parameters in the PV model and an experimental validation is presented.