Dark and illuminated characteristics of photovoltaic solar modules. Part II: Influence of light electrical stress

International audienceThe main idea is to study the effect of reverse stress current on solar cells under illuminated conditions. More specifically the characteristics (I-V) and parameters were studiedin dark and illuminated conditions at room temperature for several common periods of time. For the numerical analysis of this work a double exponential model is used. The changes in characteristics which are caused from the effect of a reverse current introduced for different stress levels simulated the effect of accumulated extreme reverse currents that can occur in the solar cells and modules as result of shading and other different reasons. The paper originally contributes to the research on the adverse effects of reverse currents on the normal functioning of cells and solar modules