Abstract
This paper characterizes the behavior of PV modules of different technologies in different temperature and irradiance conditions with three PV models using Graphical User Interface (GUI). The outputs of the model are the I-V and P-V characteristics, as well as, the current, voltage, and Power at the maximum power point (MPP), the inputs are the irradiance intensity, the cell temperature, as well as, the type of PV module and PV model. Three of the most popular PV models have been considered in this study: One diode model, two diode model, and an explicit model; firstly, the I-V curve of three PV modules of different technologies (Si-multi-crystalline, Si-mono-crystalline, Thin film) is simulated using these three models at standard test conditions (STC), the performance of the models when subjected the temperature and irradiance variation is considered next. Finally, for experimental validation, a PV array installed on the roof -top of a building of Trieste local government in Italy was used.