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盘式永磁调速器电磁-热耦合仿真分析.docx

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盘式永磁调速器电磁-热耦合仿真分析 Title:Electromagnetic-ThermalCouplingSimulationAnalysisofDiscPermanentMagnetVariableSpeedDrive Abstract: Discpermanentmagnetvariablespeeddrives(PMD)arewidelyusedinvariousindustrialapplicationsduetotheirhighefficiency,compactsize,andexcellentcontrollability.However,theoperationofPMDscanleadtohighelectromagneticandthermalloads,whichcanaffecttheirperformanceandreliability.Therefore,itisessentialtoinvestigatetheelectromagnetic-thermalcouplingbehaviorofaPMDtoaccuratelypredictitsoperationandoptimizeitsdesign.Thispaperpresentsacomprehensivesimulationanalysisoftheelectromagnetic-thermalcouplinginadiscpermanentmagnetvariablespeeddrive,aimingtoenhanceitsperformanceandreliabilityunderdifferentoperatingconditions. 1.Introduction Theintroductionprovidesanoverviewofdiscpermanentmagnetvariablespeeddrives,theirapplications,andtheimportanceofstudyingtheelectromagnetic-thermalcouplingbehavior.Ithighlightsthemotivationbehindtheresearchandoutlinestheobjectivesofthepaper. 2.LiteratureReview ThissectionreviewsrelevantliteratureontheelectromagneticandthermalmodelingofPMDs,discussingdifferentsimulationtechniquesusedtoanalyzetheircouplingbehavior.Thereviewhighlightsthelimitationsofexistingresearchandidentifiestheneedforacomprehensiveanalysis. 3.ElectromagneticModeling TheelectromagneticmodelingofthePMDincludesthegeometricalrepresentationofthemotorcomponents,selectionofappropriatematerialproperties,andsolvingtheMaxwell'sequationstoobtainmagneticfluxdistributionandelectromagneticforces.FiniteElementMethod(FEM)isusedtosolvethegoverningequations,andtheresultsarevalidatedagainstexperimentaldata. 4.ThermalModeling Thethermalmodelingfocusesonpredictingthetemperaturedistributioninvariousmotorcomponents,includingthestator,rotor,andpermanentmagnets.Heatgenerationduetowindinglosses,magneticlosses,andfrictionallossesareconsidered.FEMcoupledwiththermalanalysisisusedtocalculatethetemperatureriseandheatdissipationinthemotor,takingintoaccountthecoolingsystem. 5.Electromagnetic-ThermalCoup