小功率金卤灯电子镇流器控制策略研究

29220104AdvancedTechnologyofElectricalEngineeringandEnergyVol.29No.2April20102009-06-172008J01471966-/、。350002、、。。、、。。。MHTM5A1003-3076201002-0013-041MH。1、2、3、45-9。PFC+DC/ACPFC+DC/AC。。BUCK、、。MH。21Q1、Q2、C1C2DC/ACLL-AL-BLC3、C4R1。1MHFig.1ProposedelectronicballastforMHlamps20。1212。C3、C4。L-A、L-B14292Fig.2Operatingwaveformofcontrolsignal710。33MH、。t0t1t1t4t4。3MH、Fig.3MHlampvoltagecurrentandpowercontrolsequence3.1t0～t1MH332V1120。0AVinOVin2AOVAO=∑∞n2Vinnπsinnωt1n=135…ω=2πfVinPFC。u0≈11－ω2LC3+C42Vinπsinωt2f。3.2t1～t44VcVaVb、。4R20=R21Vd=12Va+Vb1+α1+α2－α1Vc≈12KvV0+KiI01+α2－α1Vc3α1=R24/R22α2=R24/R23R22R23α2α1。Vd=VrefI0=2Vref+α1Vc－1+α2KvV0Ki1+α244Fig.4Schematicdiagramofcontrolcircuit1t1～t2。Vc4C3、C4。2t2～t3t2～t3Vc=0I0=2Vref－1+α2KvV0Ki1+α253t3～t4Vc=α3Vlmin－V0I0=2Vref+2α1α3Vlmin－V0－1+α2KvV0Ki1+α26Vlminα3。V0=Vlmin。2153.3t4MHVc=0I0=2Vref－1+α2KvV0Ki1+α27P0=2VrefV0－1+α2KvV20Ki1+α28。V0。44.1C1、C27fl12Uc1=Uc2=Uc=12Vin9C1、C2ΔucC1、C2C1=C2≥P0flΔulVin104.2C3、C47iLI0C3、C4C3、C4ΔQc0=∫T2T1iL－I0dt=18ThiLmax11C3=C4=C0ΔuhΔuh=ΔQc0C3+C4=12Vin－V()016LC0DhT2h12ΔI0ΔI0=12Vin－V()0T2h16R0LC0V0Vin+()1213MHΔI0I0≤5%C3=C4≥512Vin－V()0V0Vin+()124LV0f2h14fh。4.302.1Vopen2f=12ππVopen－2Vin2πVopenLC槡015570WPFCVin=400VL=690μHC1=C2=68μFC3=C4=0.33μFfh=72kHZfl=147Hz。56。5LFig.5CurrentwaveformofinductorL6Fig.6Measuredwaveformsoflampvoltageandcurrent5。6、。。6MH1629、。、、。。References1LaszloLaskaiPrasadNEnjetiIraJPitel.White-Noisemodulationofhigh-frequencyhigh-intensitydischargelampballastsJ.IEEETrans.onIndustryApplication1998343597-604.2RLLinZQWang.2.65MHzself-oscillatingelectronicballastwithconstant-lamp-currentcontrolformetalhalidelampJ.IEEETrans.PowerElectron.2007223839-844.3JorgeGarcía-GarcíaJesúsCardesínJavierRibasetal.Newcontrolstrategyinasquare-waveinverterforlowwattagemetalhalidelampsupplytoavoidacousticreso-nancesJ.IEEETrans.onPE2006211243-253.4LinGuoqingChenDahuaChenHeping.Re-searchonhigh-frequencyelectronicballastforMHlampsJ.Adv.Tech.ofElec.Eng.＆Energy200423470-72.5HuaLiMiaosenShenYifengJiangetal.Anovellow-frequencyelectronicballastforHIDlampsJ.IEEETrans.onIndustryApplications20054151401-1408.6ZhuangZuoDianguoXuXiangjunZhangetal.Designofanovellow-frequencysquare-wavedigitalelectronicballastforHIDlampsA.IEEEPESCC.2007.3112-3116.7LinGuoqingChenDahuaChenHeping.DC/ACAsingle-stageDC/ACinverteranditscon-trolstrategybasedonboundarycurrentmodeJ.Adv.Tech.ofElec.Eng.＆Energy200423339-42.8LinGuoqingChenDahuaChenHeping.ResearchonelectronicballastforautomotiveMHlampsJ.Proc.CESS20042410138-142.9LinGuoqingChenDahuaChenHepingetal..Researchonalow-frequencysquare-waveelectronicballastforthemetalhalidelampsanditscontrolstrategyJ.Proc.CESS2004249173-176.10DingAngWuXinkeQianZha-oming.BOOSTAnalysisandcomparisonforinduc-torlossofcriticalconditionmodeboostPFCcircuitJ.Adv.Tech.ofElec.Eng.＆Ener-gy200625354-58.11AmericanNationalStandard.Single-endedmetalhalidelamps.ANSIC78.43-2004S.Newcontrolstrategyofelectronicballastforlow-wattageMHlampsLINGuo-qingZHENGYuan-yuanCollegeofElectricalEngineering＆AutomationFuzhouUniversityFuzhou350002ChinaAbstractAnovelcontrolstrategytomatchthedynamiccharacteristicsofMHlampsisproposedinthepapertherequiredopen-circuitvoltageforMHlampsstand-upisobtainedandthecurrentcontrolinstand-upprocessandtheconstantpowercontrolinsteadyoperationarerealized.BecauseofZCSZero-current-switchingoperationthecircuitcanworkinhighswitchingfrequencywhileachievinghighefficiency.Adifferentialamplifierisusedtosam-plethelampvoltageandcurrentsignalandtorealizethecommongroundofthefloatinglampsignalandthedrivecircuitofhalf-bridgeinverter.Thecircuitoperationandcontrolmethodaredetailedandthemainparametersarecalculated.Theexperimentalmeasurementsareusedtoverifythetheoreticalpredictionandanalyticaldiscussion.KeywordsMHlampselectronicballastcontrolstrategyzero-current