Influence of the Environment on the Parameters of CIGS-Based Photovoltaic and Photovoltaic-Thermal Converters Used in Real Conditions

The article presents the results of measurements with the help of the experimental unit designed for measuring in-vivo characteristics of photoelectric- and photoelectric-thermal converters based on copper–indium–gallium–selenide (CIGS) panels. It is found that the effect of ambient temperature on the electrical efficiency during the day is more pronounced compared to the density of solar radiation and the wind speed and that, even without constant heat removal. The contact of the rear surface of the solar panel with heat-absorbing/accumulating medium prevents a 10% reduction in the electrical efficiency even in the cooler time of the year.

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