Performance Analysis of CdTe Based PV Array Using Parameter Extraction Techniques

Abstract

Designing of Photovoltaic (PV)modules are essential as it can successfully predict the deliverable output power form the module under variable environmental conditions. The paper presents a detailed step by step modeling of a solar array delivering a maximum output power of 50 kW. Two different parameter estimation techniques are used to extract the unknown parameters in a single diode model of a solar cell. The two sets of unknown parameters are then used to plot the I-V and P-V characteristic curves at STC for a PV Module FS- 4105–2 (CdTe based PV Module). Both the models use different expressions for reverse saturation current and photogenerated current. The effect of the variation of temperature and irradiance on the P-V and I-V has been studied and compared using the two techniques. The analytical modeling and realization of the PV Module is done using MATLAB software.