Effets du taux d’ombrage sur les performances des cellules solaires à base de CIGS

Abstract

The aim of this work is the analysis of the shading effects on the performance of CIGS solar cells. The results show that the behavior of the module is degraded when operating under shading conditions. The increase of shadowing on a cell produces more deformation of the I(V) characteristic of the module. The maximum power point MPP moves to lower values of the voltage. The power loss can reach 17.43% for a total shading of a cell, which represents 2.77% area of the module. The increase in the number of shaded cells per row causes a severe deformation of the I(V) characteristic. Power losses reach 78.48% when four cells of the 36 cells of the module are shaded. Power losses depend on the configuration of shading on the cells. The shading parallel to the cells produces more power losses than perpendicular shading.