Technical Journal, Vol. 20 No. 4, 2026.
Original scientific paper
https://doi.org/10.31803/tg-20250213103422
Experimental Study and Performance Analysis of the Photovoltaic System Output under Real Weather Conditions
Danijela Kardaš Ančić
; University of Banja Luka, Faculty of Mechanical Engineering, Stepe Stepanovića 71, 78000 Banja Luka, Bosnia and Herzegovina
*
Mirko Komatina
; University of Belgrade, Faculty of Mechanical Engineering, Kraljice Marije 16. 11120, Belgrade, Serbia
Ante Čikić
; University North, Department of Mechatronics, 104. brigade 3, 42000 Varaždin, Croatia
Petar Gvero
; University of Banja Luka, Faculty of Mechanical Engineering, Stepe Stepanovića 71, 78000 Banja Luka, Bosnia and Herzegovina
*
Simon Muhič
; Faculty of Industrial Engineering Novo mesto, Šegova ulica 112, 8000 Novo mesto, Slovenia / Rudolfovo - Science and Technology Centre Novo mesto, Podbreznik 15, 8000 Novo mesto, Slovenia / INOVEKS, d.o.o., Cesta 2. Grupe odredov 17, 1295 Ivančna Gorica, Slovenia
* Corresponding author.
Abstract
The aim of this study is to evaluate PV output, considering PV module temperature and real meteorological parameters. An experimental investigation was performed in warmest month, July, and the following parameters were measured: PV module temperature, PV voltage and current, solar irradiation, air temperature, and wind velocity. It was shown that increasing PV module temperature above 25 °C leads to voltage drops and decreased electrical efficiency. The minimum measured average daily PV module temperature was 40.86 °C and the maximum was 42.59 °C. It is shown that when the PV module temperature exceeds 25 °C, the electrical efficiency starts to decrease at a rate of 0.449 – 0.455%/°C. It can be concluded that for approximately 2.2 °C above 25 °C leads to a 1 % reduction in the PV module’s electrical efficiency. These results are significant for designing PV systems and evaluating energy yield considering the climate parameters in which they will operate.
Keywords
experimental study; photovoltaic output; temperature dependence; weather conditions
Hrčak ID:
351726
URI
Publication date:
15.12.2026.
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