INFLUENCE OF TEMPERATURE ON THE EFFICIENCY OF SOLAR PHOTOVOLTAIC PANELS

U završnom radu prikazan je utjecaj temperature na iskoristivost solarnih fotonaponskih sustava. U tu svrhu korišteni su fotonaponski pretvornici na bazi polikristalnog silicija i tankoslojni fotonaponski pretvornici na bazi kadmij telurida. U teoretskom dijelu završnoga rada objašnjen je utjecaj temperature površine fotonaponskog pretvornika na njegove radne parametre, kao što su napon-jakost struje i snaga. U svrhu kompletnosti teoretskog dijela, opisani su fotonaponski pretvornici na bazi polikristalnog silicija i kadmij telurida, uz prikaz tehničkih podataka i radnih karakteristika. U praktičnom dijelu završnog rada opisana su oba laboratorijska sustava s pripadajućom mjernom opremom. Rezultati mjerenja demonstrirali su rad sustava u realnim uvjetima, pri čemu je poseban naglasak dan na mjerenje temperature površine fotonaponskih pretvornika, uz kontinuirano praćenje njihovih radnih parametara. Podaci dobiveni mjerenjem obrađeni su tabličnim kalkulatorom i prikazani u grafičkom obliku, s posebnim naglaskom na utjecaj temperature na učinkovitosti pretvorbe energije.The final paper presents the influence of temperature on the efficiency of solar photovoltaic systems. For this purpose, photovoltaic panels based on polycrystalline silicon and thin-film photovoltaic panel based on cadmium telluride were used. In the theoretical part, the influence of the surface temperature of the photovoltaic panel on its operating parameters, such as voltage-current and power, is explained. For the purpose of completeness of the theoretical part, photovoltaic panels based on polycrystalline silicon and cadmium telluride are described, with a presentation of technical data and operating characteristics. In the practical part of the final paper, both laboratory systems with the corresponding measuring equipment are described. The measurement results demonstrated the operation of the system in real conditions, with special emphasis on measuring the surface temperature of photovoltaic panels, with continuous monitoring of their operating parameters. The data obtained by measurement were processed by a spreadsheet and presented in graphical form, with special emphasis on the relationship between temperature and energy conversion efficiency