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1、DK3023_C016.fmPage347Friday,April22,20058:55AM16PowerElectronicsandControlforHybridandFuelCellVehiclesKaushikRajashekaraDelphiCorporation,Kokomo,Indiana16.1INTRODUCTIONPowerelectronicsisanenablingtechnologyforthedevelopmentofpropulsionsystemsforhybridandfuelcellvehicles.Inelectric,
2、hybrid,andfuelcellvehicles,thechallengesaretohaveahigh-efficiency,rugged,smaller,andlowercostinverterandtheassociatedelectronicsforcontrollingathree-phaseelectricmachine.Manyoftherequirementsrelatedtopowerconverterandthepropulsionmotorcontrolstrategiesofelectricandhybridvehiclesappl
3、yforfuelcellvehiclesalso.Inaddition,infuelcellvehicles,thepowerconvertersmatchthefuelcellvoltagetothepropulsionsystemvoltagesothatthepropul-sionsystemcanbedesignedindependentofthefuelcellvoltage.Thiswouldleadtooperationofeachsystematitsmostefficientdesignlevels.Thepowerelectronicsal
4、sohasamajorroleinthe42Varchitecture-basedvehicles.Inthischapter,theoperatingstrategiesofhybridandfuelcellvehiclesaredescribedwiththeassociatedpowerelec-tronicsrequiredforthesesystems.16.2HYBRIDELECTRICVEHICLESHybridelectricvehicles(HEVs)havetwoormoresourcesofenergyortwoormoresource
5、sofpoweron-boardthevehicle.Thesourcesofenergycanbebattery,flywheel,andsoon.Thesourcesofpowercanbeengine,fuelcell,battery,ultracapacitor,andsoon.Dependingontheconfigurationofthevehicle,twoormoreofthesepowerorenergysourcesareused.Thesehybridvehiclescanreducetheairpollutionsignificantlyt
6、hrough©2005byTaylor&FrancisGroup,LLCDK3023_C016.fmPage348Friday,April22,20058:55AMincreasedfueleconomy,useofalternativefuels,improvedpowerunit,andafter-treatmenttechnology[1].Hybridvehiclesofferthefollowingbenefits:•Greatestpotentialforimprovedfuelefficiencyandperformanceinthemid-ter
7、m,hence,potentialimprovementstofueleconomy•Eliminatesidlefuelconsumptionduringdecelerationandstops•Operatesengineatmoreefficientpoints•On-boardpowergenerationusingauxiliarypowerunits;hence,improvedacces-sorypowergeneratingefficiency•Addressescarbondioxideemissionreductionthroughimpro
8、vedfuelefficiencyandreduced
