Abstract
A performance study of a photovoltaic system installed in an eco-house on the campus of the University of Calgary in Canada is presented. The panels of the photovoltaic array installed on the roof have different azimuth and tilt angles, therefore, the solar energy incident on them is different. The effects of orientation on the efficiency of electrical energy production in individual photovoltaic modules are analyzed. The conversion efficiency is determined by means of measurements of the energy produced by the modules, supported by the RETScreen software, but also independently, it is calculated using the radiation data from the university weather station (WRS). These results are compared with those of a previous study, carried out with PVSyst, where the orientation angles of the system are simplified. Average results of energy produced, and efficiency are shown. It is observed that the efficiencies from the simulations are very similar, although of lower value. The results obtained with WRS are considered more realistic and of greater magnitude.
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