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1、Proceedingsofthe10thMediterraneanConferenceonControlandAutomation-MED2002Lisbon,Portugal,July9-12,2002.OPTIMALDESIGNANDCONTROLOFAXIAL-FLUXBRUSHLESSDCWHEELMOTORFORELECTRICALVEHICLESY.P.Yang*,C.H.Cheung,S.W.Wu,J.PWang*DepartmentofMechanicalEngineering,NationalTaiwanUniversityNo
2、.1,RooseveltRoad,Sec.4,Taipei,Taiwan106,R.O.Cypyang@w3.me.ntu.edu.twKeywords:electricvehicle,axial-fluxwheelmotor,convertschemical,electricalormechanicalenergyoptimaldesign,optimalcurrentwaveformintodifferentforms,thusconsumingenergythroughthedissipationcomponentsofwindageand
3、friction.ItisquiteessentialforengineerstolookAbstractanapproachtoimprovetheoverallefficiencyofAmulti-objectiveoptimaldesignofabrushlessdcelectricvehicles,andhencetoincreasetheirwheelmotorispresented.Thisaxial-fluxdrivingrange.permanentmagnetmotorisdesignedtoachieveaAmongvario
4、usmotorcandidates,Chang[1]hightorque-to-weightratioandmotorefficiency,providedanexperts’surveyandconcludedthatandissuitableforthedirect-drivenwheelinductionmotordriveswerepreferredforEVapplications.Thededicatedmotorismodelledinpropulsionpurpose.However,thepermanentmagneticcir
5、cuits,anddesignedtomeetthemagnetbrushlessdcmotorfeaturedcompactness,specificationsofanoptimisationscheme,subjecttolowweightandhighefficiencyandthereforeconstraints,suchaslimitedspace,currentdensity,providedanalternativeforEVpropulsion.Thesefluxsaturationanddrivingvoltage.Fini
6、teelementmotorscanbeclassifiedasindirect-driven[2]andanalysesarethencarriedouttoobtainthedirect-drivenmotors[3-5].Thelatterarealsoelectromagnetic,thermalandmodalcharacteristicscalledwheelmotorsorhub-inmotors,whichareofthemotorformodificationandverificationofdirectlymountedins
7、idewheelsthuseliminatingthepreliminarydesign.Theprototypesaretransmissiongearsormechanicaldifferentialswithfabricatedandcontrolledbythepulse-width-theirassociatedenergyloss.modulationdrivewithoptimalcurrentwaveforms.Experimentalresultsshowthatthedirect-drivenTheaxial-fluxmoto
8、ramongthedirect-drivenpowersysteminstalledonanelectricmotorcyclemoto
