Operational aspects of photovoltaic systems
2015
Malínek, Martin (Slovak University of Agriculture, Nitra (Slovak Republic). Faculty of Engineering, Department of Physics) | Božiková, Monika (Slovak University of Agriculture, Nitra (Slovak Republic). Faculty of Engineering, Department of Physics) | Petrović, Anamarija (Slovak University of Agriculture, Nitra (Slovak Republic). Faculty of Engineering, Department of Physics) | Hlaváč, Peter (Slovak University of Agriculture, Nitra (Slovak Republic). Faculty of Engineering, Department of Physics)
The photovoltaic system is one of the most important ways for conversion of solar energy into electric energy. But the future of photovoltaic systems usage depends on many factors such as: technological advances, production volume of photovoltaic components, ecological tax on traditional energies, and also on the most convenient use of this new energy technology, but the most relevant factors from the technical and physical point of view are: solar irradiation, azimuth angle of sunlit surfaces orientation, the angle of surface inclination which is dazzled, local climate and air temperature conditions. All mentioned factors were examined on two photovoltaic solar systems which were installed in the same area. The results include an assessment of the performance of stationary – tight – fitting photovoltaic modules with different orientation and with different angles of inclination. At first were measured power characteristics of photovoltaic systems during one year period. Second monitored parameter was energy produced by solar modules in the same time. The obtained results show that in theory preferred south orientation of photovoltaic modules is not the best for production of energy by photovoltaic modules in some seasons in the middle Europe area. From results presented in the article is evident, that optimal energy production by photovoltaic module significantly depends on all mentioned factors, but results showed that energy production of photovoltaic system is affected also by temperature of the photovoltaic module surface.
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