A New Control Technique for Achieving Wide Constant Power Speed

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1、ANewControlTechniqueforAchievingWideConstantPowerSpeedOperationwithanInteriorPMAlternatorMachineJacksonWaiThomasM.JahnsUniversityofWisconsin-MadisonUniversityofWisconsin-Madison1415EngineeringDrive1415EngineeringDriveMadison,WI53706Madison,WI53706Ph:608-265-3821Ph:608-262-5702Fax

2、:608-262-5559Fax:608-262-5559E-Mail:waij@cae.wisc.eduE-Mail:jahns@engr.wisc.eduAbstract-AnewfluxweakeningcontrolalgorithmisS/Arotorpresentedforachievingwideconstantpoweroperationwithactsasaninteriorpermanentmagnet(IPM)synchronousmachineflywheeloperatingasanalternator.Thealgorithm

3、isdesignedtoinitiatefluxweakeningonlywhennecessarybyrecognizingthethresholdconditionsforcurrentregulatorsaturation,makingthealgorithminherentlyadaptivetochangesintheinverterbusvoltage.A6kW42Vautomotiveintegratedstarter/alternator(ISA)usingadirect-driveIPMmachineservesasthetargeta

4、pplicationforthisdevelopment.TorqueconverterSimulationresultsshowthatthenewalgorithmiscapableofinsiderotorhubFlywheel,alternator,starter,pulley,&deliveringverygoodstaticanddynamicbusregulationpossiblyabelteliminatedcharacteristicsovera10:1engineoperatingspeedrange.Testsarepresent

5、lyunderwaytoconfirmtheseperformanceNewPartsEliminatedPartspredictionsusingaprototypeIPMstarter/alternatorsystem.Fig.1Integratedstarter/alternator(ISA)configuration.Keywords:Permanentmagnetmachines,ACmotordrives,roadvehiclepowersystems,powercontrol,synchronouspoweredaccessoriescom

6、binedwithwideinterestinmildgeneratorshybridconceptsusingelectricmachinesforlowspeedI.INTRODUCTIONaccelerationhasdrawnsignificantattentiontoISAsystems[8].AsillustratedinFig.1,thenewISAreplacestheWithproperdesign,aninteriorpermanentmagnet(IPM)conventionalengineflywheelandisdrivendi

7、rectlybythesynchronousmachinecanachieveconstantpoweroperationenginecrankshaftwithoutgearing.Themachineisoverawidespeedrangeinboththemotoringanddesignedtooperateasboththeenginestarterandalternator,generatingregimes[1].Asaresult,IPMmachinesarereplacingthetwoseparatemachinesthatperf

8、ormtheseattractingincreasingattentionfor