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Stationary-framecurrentcontrolstrategyfortransversefluxpermanent-magnetmachine.WangJiankuan(王建宽)，CUIWei(崔巍)，JIANGJianZhong(江建中）SchoolofElectromechanicalEngineeringandAutomation,ShanghaiUniversity,Shanghai200072,P.R.ChinaAbstractAnewstationary-frameACcurrentcontrolstrategythatcaneKminatesteady-stateerrorsisdiscussedandappliedtothecontroloftransversefluxpermanent-magnetmachine(TFPM).Basedontheprincipleofmodulationanddemodulation,thisACcontrollercanachievethesamefrequencyresponsecharacteristicastheequivalentDCcontroller.VaHdityoftheTFPMcontrolsystemusingthiscurrentcontrolstrategyisconfirmedwithsimulationresults.Keywordstransversefluxpermanent-magnetmachine(TFPM),currentcontroller,stationaryframe,modulation.1.IntroductionOverthelastdecades,withtherapiddevelopmentsinpowerelectronics,permanentmagneticmaterials,andmanufacturingandapplicationsofmodernpermanentmagnetmotorshavebeenmadesignificantprogress.Amongthem,transversefluxpermanent-magnetma chine(TFPM)withrelativelyhightorquedensityandlowspeed,whichcanavoidgearingconfigurations,ises peciallysuitedfordirectdrivesuchasfullelectricship,electricvehicle,andindustrialrobots.Comparedwithconventionalmachines,TFPMhasanumberoffavor ablefeaturest:Ithasuniquethree-dimensionalfluxpatternlead ingtodecouplingofspacerequirementsofthefluxcar ryingcoreironpathandthespaceoccupiedbyarmaturewinding.Thispermitsapplicationsofsmallpolepitches，leadingtohighcurrentloadingandhighforcedensity.Eachofthemachinephasesisentirelyseparated,andthereforedoesnotcoupleelectromagneticallywithotherphases.Lowvibrationsignatureandhighreliabilityareachievedbyincreasingthenumberofmachinephases.Duetotheseadvantages,designworkiscarriedouttomaximizethetorquedensityforthesemachines.However,inordertomakefulluseofthesemachines,theircontrolalsoneedstobeoptimized.Asanovelinvert-fedsynchronouspermanent-magnet(PM)machine,thedesignofcurrentcontrollerisanim portantissueforhigh-performancemotordrivers.Overtheiastfewdecadesresearchoncurrentcontrolforpowerinverters
