Matlab-Simulink Based Modeling to Study the Influence of Nonuniform Insolation Photovoltaic Array

Abstract

The performance of a photovoltaic (PV) array is affected by array configuration, insolation, and temperature. It is important to understand the relation between these effects and the output power of PV array. This paper presents a Matlab Simulink based PV module model that includes a controlled current source and an S-Function Builder. The modeling scheme in S-Function Builder is deduced by some predigested function. The model is practically validated using different array configuration (PV module in series and in parallel) with nonuniform insolation. The simulation results show the I-V and P-V characteristics under nonuniform insolation conditions. It indicates that output power of PV array get more complex with multiple peaks. The presented model will help to validate new MPPT strategies, and will help to design the most optimum configuration PV array with the maximum power.