20.500.12556/RUL-170045 Sistem za meritev homogenosti in avtomatsko kalibracijo umetnega LED sonca System for Measuring Homogeneity and Automatic Calibration of Artificial LED Sun Pri razvoju sončnih celic potrebujemo standardni vir svetlobe za njihovo testiranje. Za ta namen uporabljamo umetna sonca oz. sončne simulatorje. Ta morajo biti ustrezno kalibrirana. Eden izmed izzivov kalibracije je zagotavljanje homogenega obsevanja ciljne površine. Pri umetnih soncih sestavljenih iz svetlečih diod lahko homogenost prilagajamo z nastavljanjem moči posameznih svetlečih diod. V tem magistrskem delu smo razvili namenski merilni sistem, ki meri nehomogenost obsevanja ciljne površine umetnega sonca in mu iterativno spreminja moči posameznih svetlečih diod, da doseže najboljšo možno homogenost obsevanja. Sistem avtomatsko kalibrira umetno sonce hitreje kot z ročno kalibracijo, homogenost ciljne površine pa smo izboljšali za 40%. Nehomogenost obsevanja po avtomatski kalibraciji na obsevanje naravnega sonca je znašala 4,2%, sama kalibracija pa je trajala le 5 minut. In the research and development of photovoltaic cells, we need to use a standardised light source. For this purpose, we use artificial sun simulators. They have to be adequately calibrated. One of the challenges of calibration is ensuring homogeneous irradiance of the target surface. When using artificial sun simulators made with light-emitting diodes, we can change the homogeneity of irradiance by changing the power levels of individual light-emitting diodes. In this master's thesis, we have developed a measuring system that measures the homogeneity of irradiance on the target surface of the artificial sun simulator and iteratively changes the power levels of the light-emitting diodes so that the best homogeneity is achieved. The system automatically calibrates the artificial sun faster compared to manual calibration. We have achieved a 40% increase in the homogeneity of irradiance on the target surface. Following automatic calibration to natural sunlight irradiance, the nonhomogeneity was reduced to 4,2%. The calibration was completed in only 5 minutes. umetno sonce avtomatska kalibracija homogenost obsevanja svetleče diode artificial sun automatic calibration homogeneity of irradiance light-emitting diodes true false false Slovenski jezik Angleški jezik Magistrsko delo/naloga 2025-07-02 12:38:40 2025-07-02 12:38:41 2025-07-08 14:20:33 0000-00-00 00:00:00 2025 0 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 62952 241811459 Uran_oblak_Tjaz_-_Sistem_za_meritev_homogenosti_in_avtomatsko_kalibracijo_umetnega_LED_sonca.pdf Uran_oblak_Tjaz_-_Sistem_za_meritev_homogenosti_in_avtomatsko_kalibracijo_umetnega_LED_sonca.pdf 1 49B1FC5512677330C0081ABEFA6FE167 61e12bb9b82b38377924cb9681c598a2bd5b6d132e1aac807e8c9371570d7177 d3244723-572e-11f0-b232-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=211966 Fakulteta za elektrotehniko 0 0 0