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ABSTRACT
ABSTRACT
Inthisworkanalysis,designandresearchoftractionconverterareconducted,
whichisdesignedtosupplytheneedsoftractionvehicles.Theclassicalstructureof
DC/DCconverterwithtransformerisolationinfullbridgetopologyisused,whichis
selectedforthespecificfieldofapplications.Designoftractionconverterisdivided
intotwostages.Thefirstconcentratesonthedesignofhighfrequencytransformer
(HFT)andthesecondrelatestothedesignoftractionconverter(TC).
InthestudyofHFTareviewofmodernmagneticmaterialsforselectedgroupof
applications,designmethodsandpowerlossesanalysisareperformed.Amathematical
modelinMatlab-Simulink,simulationmodelinOrcad-PSpicewithrealmagnetization
characteristicsofmagneticmaterialsaredeveloped.Anelectromagneticandthermal
modelsinComsolMultiphysicsarealsodevelopedusingFiniteElementsMethod.
Conductedanalysisandachievedresultsofsimulationmodelsallowedtodevelop
amethodologyforthedesignandoptimizationofthetransformerintermsofminimizing
thesizeandpowerlosses.
Regardingthedesignoftheconverterthepowerlossesareanalysedand
simulationmodelsofthetractionconverterinOrcad-PSpiceandPSIMaredeveloped.
TheoptimalareaoftheoperationofTCisdeterminedintermsofminimumofpower
lossandvolumeregardingmainelementsoftheTC.Theresultsofaboveanalysisand
simulationmodelsallowtodeterminethemethodologyfortractionconverterdesign
process,withemphasisonHFTdesign.
Inordertoverifyabovestepsofthedesignoftractionconverterthemodelofreal
converterwasdesigned,with10kWofoutputpower,24Vofoutputvoltageandupto
450Aofoutputcurrent.TherewasalsoHFTrealmodelsdesignedwithhighoutput
currentcapability,withnanocrystallineVitroperm500FandamorphousMetglas
2605SA1magneticmaterials.Ithasbeenshownthatusingaforementionedprocedure
anoptimaldesignoftractionconverterforselectedgroupofapplicationscanbe
achievedintermsoftechnicalandeconomicaspects.
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