一种提高电动汽车充电机轻载运行效率的方法

29320107AdvancedTechnologyofElectricalEngineeringandEnergyVol.29No.3July20102009-09-221972-、1973-、、。100044。--ZVZCS。。ZVZCSTM92A1003-3076201003-0035-041。AC/DCDC/DC。IGBTIGBTIGBTZCSZVS。IGBTZVZCS1。--CDDZVZCS2、、。。CDDZVSZCS。ZVSZVS。LCD34。、。--CDSCDD。21SCDCCDSZVZCS1AC/DCDC/DC。SC。SCCDSCDD2。SC36291CDSZVZCSFig.1CircuittopologyofFB-PSZVZCSconverterwithCDSclampcircuitCDSZVS。ZVSZVS。C1C3。ZVSdi/dt。ZVSLPLP。2abS1～S4cipdC3eS2VCE。2Fig.2WaveformsunderlightloadSCCCDhCDS。SC。CDS。3CDSLPC1C3。SCC1C3ECONECON=14CE2nVS－VOn－nILLPC槡()E21nVSVOILLPCEC1、C3。LPELEL=12LPnIL22ECON=ELILIJL1、2IJL=2槡2－1nVS－VOn2CEL槡P3ILIJLSCCDSZVS。4VS=550VVOMAX=100VIOMAX=100AIOMIN=10A20kHz5C1=C3=30nFCC=800nFLP=8μHLO=100μHCO=2200μFn=N1/N2=2。IJL≈22A。4.1Mat-lab7.0。CDSIL=10A3。3373IL=10AFig.3SimulationwaveformsatlightloadIL=10AVC1C1Vce-S2S2IPLP。CDSZVSCDD。4.2CDS4ab10%。4aCDSSCCDD4bCDSSC。CDSZVSIGBTZVSIGBTIGBTC、EIGBT。4.3、、CDS4a10%CDSS1200V/div5A/divS1Fig.4aVCEofS1andprimarywindingscurrentoftransformerwithCDSclampactive4b10%CDSS1、S2200V/div10A/divS1S2Fig.4bVCE1andVCE2waveformsofS1S2andIpwaveformoftransformerwithCDSclampinactive5。CDSCDSCDD。90%。CDS1.12kW75.8%CDS38295Fig.5Experimentalresultsofefficiency75.1%CDS。5CDSCDDCDD。。CDDZVS。References1ZhangXianmouLiYaohua.DC/DCAphase-shiftedsoft-switchDC/DCconverterwithaverage-currentmodecontrolJ.Adv.Tech.ofElec.Eng.＆Energy200322220-22.2ChoJung-GooBaekJu-WonJeongChang-Yongetal.Novelzero-voltageandzero-current-switchingfull-bridgePWMconverterusingasimpleauxiliarycircuitJ.IEEETrans.onIndustryApplications199935115-20.3RuanXinboYanYangguang.Zero-voltage-switchedPWMphase-shiftedconverteremployinganauxiliaryres-onantnetA.SixthInternationalConferenceonPowerElectronicsandVariableSpeedDrivesC.1996.534-539.4RWDeDonckerJPLyons.Theauxiliaryresonantcom-mutatedpoleconverterA.IEEEIndustryApplicationsSocietyAnnualMeetingC.1990.1228-1235.5NiuLiyongJiangJiuchunZhangWeige.ZVZCSStudyonoptimizingdesignofafull-bridgephase-shiftedZVZCSconverterJ.JBeijingJiaotongUniv.200832139-42.6ZhangYunfangChenRongZhaoYongjian.DC-DCAnovelZCSfull-bridgeDC-DCconvert-erbasedonauxiliaryactivecircuitJ.Adv.Tech.ofElec.Eng.＆Energy200928437-41.AnapproachtoimproveefficiencyofEVchargerunderlightloadLIJing-xinNIULi-yongWANGJian-qiangJIANGJiu-chunSchoolofElectricalEngineeringBeijingJiaotongUniversityBeijing100044ChinaAbstractThispaperpresentedanapproachtoimproveefficiencyofEVbatterieschargerunderlightload.Onthebasisofanalysisontheoriginalchargerbuiltuponcapacitor-diode-diodeclampcircuitamodifiedcapacitor-diode-switchingclampcircuitwasdesignedtoreplacetheoriginaloneinthefull-bridgephase-shiftedzero-voltageandze-ro-current-switchingPWMDC/DCconverter.Operatingprinciplewasintroducedandthecriticalconditiontojudgewhetherunderlightloadwasderived.Circuitsimulationandexperimentontheprototypewereperformedun-derdifferentload.Bothresultsshowthatbesidestheadvantagesoftheoriginaltopologyhigherefficiencyandlessstressonswitchesareachievedunderlightload.KeywordsDC/DCconverterZVZCSfull-bridgephase-shiftedcircuitsimulation