Modeling of solar photovoltaic cells and output characteristic simulation based on Simulink

Guifang Guo1*, Xiaolan Wu2, Sh

Abstract

The simulation model of PV array is presented on the basis of PV array’s physical equivalent circuit and its mathematical model by Matlab/Simulink. This simulation model can be used to show the U-I output characteristics of the PV array under various irradiation levels and temperatures condition. Meanwhile, this model can be applied to cases of other powers flexible and used to study array’s parallel and serial characteristics. According to the output U-I characteristics, the U-P curve of the PV array is a single peak curve, which means that the PV array has a Maximum Power Point (MPP). Under partially shaded conditions, the U-P curve of PV array has the characteristics of multi-summit. The simulation results show that the irradiation changes mainly affect the PV output current, while the temperature changes mainly affect the PV output voltage.