Abstract
The main purpose of this paper is to evaluate the efficiency of a photovoltaic module operating in a sahelian country like Niger. A brief introduction to the behavior and the functioning of a photovoltaic module has been presented and the basic equations needed for a modeling based on ambient parameters have been also written. For the validation, characteristics of experimental purpose are presented with a satisfactory reliability degree. The effects of external parameters, mainly temperature, solar irradiance and wind speed have been considered on the output current characteristic and the output power characteristic. Due to their critical effects on the operation of the panel, effects of series resistances were also studied.
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