20.500.12556/DKUM-98052 Modernizacija polnilnega vezja za talno akumulatorsko lokomotivo Schalke magistrsko delo Modernization of the charging circuit for the Schalke floor-mounted battery locomotive Za projekt je bila izdelana zasnova modernizacije vezja polnilnika svinčenih baterij, ki se uporablja v talni akumulatorski lokomotivi Schalke GaE-08 v Premogovniku Velenje. Delo se je začelo z analizo in meritvami na obstoječem polnilniku. Na podlagi pregleda alternativnih topologij je bila izbrana struktura usmernika Vienna v kombinaciji z DC-DC pretvornikom navzdol. Delovanje predlaganega močnostnega vezja ter podporne elektronike je bilo preverjeno in optimizirano s pomočjo simulacij. Preračunane so bile zahteve hlajenja polprevodnikov. Izdelani so bili načrti tiskanih vezij ter celotne električne povezave sistema, pri čemer so bili upoštevani varnostni elementi. Obravnavan je bil tudi teoretični potek programa za vodenje polnilnika. As part of the project, a design for modernizing a lead-acid battery charger used in a floor-mounted battery locomotive, the Schalke GaE-08, at the Velenje Coal Mine, was developed. The work began with an analysis and measurements of the existing charger. Based on a review of alternative converter topologies, a structure combining a Vienna rectifier with a step-down DC-DC converter was selected. The operation of the proposed power circuit and the associated auxiliary electronics was verified and optimized using simulations. The cooling requirements of the power semiconductors were calculated. Printed circuit board layouts and the complete electrical interconnection of the system were designed, with safety elements considered. The theoretical control algorithm of the charger was also addressed. Vienna usmernik pretvornik navzdol močnostna elektronika Vienna rectifier Buck converter Power electronics true true false [M. Medved] Slovenski jezik Angleški jezik Magistrsko delo/naloga 2026-05-11 13:34:40 2026-05-29 13:19:03 2026-06-20 03:06:36 0000-00-00 00:00:00 2026 0 Maribor 0 Maribor 1 spletni vir (1 datoteka PDF (XXVII, 231 str.)) 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 621.3.049.75:621.354.2(043.2) 282208259 MAG_Medved_Miha_2026.pdf MAG_Medved_Miha_2026.pdf 1 DB652E02B44E5762CE36D3CFFA89292B 09ad742d67657d4b892446bf63d004dc8903dafcca84ffabcb3e5a2311cab9a9 7cb2b762-4f73-11f1-a431-00155d0001a1 https://dk.um.si/Dokument.php?lang=slv&id=206099 Fakulteta za elektrotehniko, računalništvo in informatiko 0 0 0