20.500.12556/RUL-188359 Načrtovanje in preizkušanje enosmernega presmernika z dvosmernim pretokom moči Design and testing of a DC/DC converter with bidirectional power flow V magistrskem delu so predstavljeni načrtovanje, izdelava in eksperimentalno testiranje enofaznega pretvornika z dvosmernim pretokom moči. Glavni cilj je bil ovrednotiti delovanje izdelanega pretvornika in preveriti obnašanje SiC tranzistorjev v vezju. Najprej sta predstavljeni splošna topologija vezja ter izbira transformatorja in serijske tuljave, ki tvorita visokofrekvenčno povezavo med nizkonapetostnim in visokonapetostnim delom pretvornika. Nato sledita načrtovanje vezja in izbira komponent. Vezje je razdeljeno na štiri sklope: močnostni del s tranzistorskima mostičema, krmilni del s krmilniki vrat, napajalni del z DC-DC-pretvorniki in napetostnimi regulatorji ter merilni del z vezji za merjenje napetosti in tokov. V zadnjem delu so predstavljeni postopek testiranja in rezultati meritev, zlasti karakteristike moči in izkoristka pri najvišjih varno preizkušenih napetostih 250 V na VN strani in 30 V na NN strani. Med testiranjem pri napetostih od 100 do 250 V na VN strani so se pojavljale prekinitve komunikacije med računalnikom in mikrokrmilnikom, pri nadaljnjem zviševanju napetosti nad razmerje 250 V/30 V pa so preizkuse omejile termične lastnosti NN strani. V območju smiselnega obratovanja je bil izmerjeni izkoristek med 86 in 96%. This thesis presents the design, implementation, and experimental testing of a single-phase bidirectional DC-DC converter based on the dual active bridge (DAB) topology. The main objective was to evaluate the performance of the implemented converter and investigate the behavior of SiC MOSFETs in the circuit. The first part of the thesis describes the general circuit topology and the design of the transformer and series inductor, which form the high-frequency link between the low-voltage and high-voltage sides of the converter. It then presents the circuit design and component selection. The converter is divided into four main sections: the power stage, comprising two transistor bridges; the gate-drive stage; the auxiliary power-supply section, comprising DC-DC converters and voltage regulators; and the measurement section, comprising voltage and current sensing circuits. The final part presents the experimental procedure and measurement results, with emphasis on the power transfer and efficiency characteristics at the highest safely tested voltage levels: 250 V on the high-voltage side and 30 V on the low-voltage side. Communication interruptions between the PC and the microcontroller occurred during tests with high-side voltages from 100 to 250 V. At voltage levels above 250 V/30 V, further testing was limited by the thermal performance of the low-voltage stage. Within the practical operating range, the measured efficiency ranged from 86% to 96%. pretvornik DC-DC dvosmerni pretok moči SiC MOSFET močnostna elektronika converter DC-DC bidirectional power flow SiC MOSFET power electronics true false false Slovenski jezik Angleški jezik Magistrsko delo/naloga 2026-09-21 14:20:17 2026-09-21 14:20:24 2026-09-22 04:04:55 0000-00-00 00:00:00 2026 0 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 1970-01-01 63213 Benigar_Timotej_-_Nacrtovanje_in_preizkusanje_enosmernega_presmernika_z_dvosmernim_pretokom_moci.pdf Benigar_Timotej_-_Nacrtovanje_in_preizkusanje_enosmernega_presmernika_z_dvosmernim_pretokom_moci.pdf 1 DD00F9DE6F9DEFB5ED05C7C97EFB7BD4 22fca63804db10a1bc25b3651fb8e0bb3a3176b66729e551ea1b02f277f06637 c359602e-b5b6-11f1-8bc5-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=248452 Fakulteta za elektrotehniko 0 0 0