Performance Analysis of Photovoltaic Modules Employing Single-and Double-Diode Models

Mathematical models of photovoltaic modules are essential for an assertive description of the dynamic performance of a generating unit, in the face of local adversities and weather conditions to which the converter units may be subjected. This work develops the evolutionary process of four models for polycrystalline modules and presents a methodology for estimating their parameters, which allows expressing the time-varying nature of the modules as a function of the irradiance and temperature present in the working plane. The investigations carried out shed light on the performance of photovoltaic generators in dynamic environmental conditions. When the characteristics curves obtained from the models were compared with those provided by the manufacturers, it was observed that the models have shown a good accuracy for different levels of irradiance and temperature. Based on the experimental measurements, the four models have been validated and depending on the type of study that will be carried out with the photovoltaic generator, the more complete models do not always justify their use due to the accuracies achieved, especially since they increase the complexity of the simulations due to the time-varying nature of their parameters.