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1、AnalyticalDesignofanAxialFluxPermanentMagnetIn-WheelSynchronousMotorforElectricVehicleC.Versèle1,Z.DeGrève1,2,F.Vallée1,R.Hanuise1,O.Deblecker1,M.Delhaye1andJ.Lobry11ElectricalEngineeringDepartment–FacultéPolytechniquedeMons2BelgianNationalFundforResearc
2、h,FNRSBoulevardDolez,317000Mons–BelgiumTel.:+32/(0)65–374123Fax:+32/(0)65–374120E-Mail:christophe.versele@umons.ac.beKeywords«ACmachine»,«Electricvehicle»,«Permanentmagnetmotor»,«Synchronousmotor».AbstractThispaperdealswiththeanalyticaldesignofanaxialflu
3、xpermanentmagnet(AFPM)in-wheelsynchronousmotorforelectricvehicles(EVs).AFPMmotorisapancake-typehightorquedensitymotorthatfitsperfectlythewheelofanautomobilevehicleandthatcan,thus,beeasilyandcompactlyintegratedintothewheel.Therefore,AFPMmotorseemstobeabet
4、terchoicethanradialfluxpermanentmagnet(RFPM)motorforthiskindofapplication.First,adesignprogramofAFPMsynchronousmotorsdevelopedbytheauthorsinMatlabenvironmentispresentedandvalidatedbyexperimentalresults.Thisprogramisverysimpletouseandusefulduringthefirsts
5、tageofthedesignofanewmotorinordertoevaluateitsperformancesandoveralldimensionswithreasonableaccuracy(althoughmoresophisticatedmethods,suchasFiniteElementAnalysis(FEA),arerequiredinmoreadvancedphasesofthedesign).Inasecondtime,thisprogramisusedtodesignoneo
6、fthefourin-wheelmotorsofanurbanEV.TheresultsconfirmthatAFPMmotorisacompetitivechoiceforthisapplication.Indeed,itmeetsalltherequirementsoftheEVandfitsperfectlytheshapeandsizeofaclassicalrimofanautomobilevehiclewheel.Moreover,theresultsarecomparedwiththose
7、obtainedforamoreconventionalRFPMmotor.ThiscomparisonshowsthatAFPMmotorisabetterchoicethanRFPMmotorforin-wheelmotorapplications.IntroductionSinceNeodymium-Iron-Bore(NdFeB)permanentmagnet(PM)materialswereinventedin1980’s,PMmachinesaremoreandmoreusedinlarge
8、-scaleindustrialapplicationswhereothertypesofmachineswerepreferredbefore.Moreover,thisinventiongavenewpossibilitiesfortheuseofaxialfieldmachinesuntilthenverylimitedinindustrialapplications.ItwasalsofoundoutthatAFPMmachines
