Analyze and Evaluate the Electrical Performance of PV Isofotón-100W Modules Exposed for a long Time in the Desert Environment

Abstract

The degradation of the electrical performance of photovoltaic panels Isofotón-100W exposed to the sun for a long period of about 10 years in a Saharan environment of Adrar was presented. In this article, we will present some experimental results obtained during the analysis of the I-V characteristics of some Isofotón-100W photovoltaic panels tested in the real conditions of the Saharan environment (Adrar region). The degradation of the electrical performance of the Isofotón-100W module is visualized through the analysis of the I-V and P-V characteristics experimentally or by visual field inspection of a renewable energy research unit in a Saharan environment. The physical parameters of the equation governing these characteristics were determined by the effective iteration method using only the information in the data sheet. The comparison between the experimental characteristic curves I-V and P-V of the photovoltaic modules (Isofotón-100W) and the reference in STC shows that the degradation of the electrical performances are due globally by the delamination and the discoloration of the EVA encapsulate after the long term exposure in a desert environment