双PWM控制交流励磁电源直流链电压的稳定控制策略

PWM,,,(,400044):(PWM),PWM,,,PWM,,:;;PWM;;:TM46;TM76:2007204204;:2007205228(2005AB6015)0(PWM)(PWM),[127]PWM,,,PWM,,,[829]PWM,,,,,,PWM,PWMPWM,PWM1PWM1PWM,PWM1PWMFig.1BlockdiagramofacexcitationgeneratorwithdualPWMconverterexcitation,[10211],q0,:P=egdigdQ=-egdigq(1):egdd,igdigqd,qd,q,(),;,,36312120071110Vol.31No.21Nov.10,2007(mmH),,,[10211]:pg=egdigd=uraira+urbirb+urcirc=pr(2):pg;ura,urb,urc;ira,irb,irc;pr,:pC=udciC=Cudcdudcdt(3):C;udc,:Cudcdudcdt=pg-pr=egdigd-uraira-urbirb-urcirc(4)egd,(4):Cegdudcdudcdt=igd-uraira+urbirb+urcircegd=igd-pregd(5)(5),d,,,,,,,,,,,,,,21,,,,(5),pr/egd,,PId,d,,(2)pr,degd,,pr/egd,,,PWM,[11],2dpr/egd,2Fig.2Controlblockdiagramofgrid2sideconverterwithinstantaneouspowerdirectfeedback3[7]PWM,[7]PI,PI150s,115ms,3,010134462007,31(21)3(P=-1kW,Q=1kvar-1kvar)Fig.3Waveformdiagramswithtraditionaldc2linkvoltagecontrol(P=-1kW,Q=1kvar-1kvar)[12],,,,,4(P=-1kW,Q=1kvar-1kvar)Fig.4Waveformdiagramswithimproveddc2linkvoltagecontrol(P=-1kW,Q=1kvar-1kvar)341kW,1kvar1kvar2:1;,,;56,PWM;2,,,34,,,PWM,3(b),,,,,,A1kW,750var2kvar2,4,PWM,,,,()[1]PENAR,CLAREJC,ASHERGM.Adoublyfedinductiongeneratorusingback2to2backPWMconvertersanditsapplicationtovariable2speedwind2energygeneration.IEEProceedings:ElectricPowerApplications,1996,143(3):2312241.[2]EKANAYAKEJB,HOLDSWORTHL,WUXG,etal.Dynamicmodelingofdoublyfedinductiongeneratorwindturbines.IEEETransonPowerSystems,2003,18(2):8032809.[3],,..,2004,28(23):92296.WUXiaojie,CHAIJianyun,WANGXiangheng.OverviewofACexcitationforvariablespeedconstantfrequencydoublyfedwindpowergeneratorsystems.AutomationofElectricPowerSystems,2004,28(23):92296.[4]MULLERBS.Doublyfedinductiongeneratorsystemsforwindturbines.IEEEIndustryApplicationMagazine,2002,8(3):26233.[5],,,..,2006,30(4):1052112.HEYikang,HEMingming,ZHAORende,etal.AnalysisonfrequencyconverterservedfortheACexcitationofwind2powerDFIG.AutomationofElectricPowerSystems,2006,30(4):1052112.[6],,,..,2006,30(21):44248.ZHANGXing,ZHANGXianli,XIEZhen,etal.Driveofdoubly2fedwind2energygenerationconverterthroughlongcableandovervoltagerestrain.AutomationofElectricPowerSystems,2006,30(21):44248.[7],,.PWM.,2007,31(6):77281.ZHOUQiukuan,LIAOYong,YAOJun.DesignofexcitationsystemforACexcitedgeneratorexcitedbydualPWMconverter.AutomationofElectricPowerSystems,2007,31(6):77281.[8],,..,2006,26(10):1302135.XIANGDawei,YANGShunchang,RANLi.Systemsimulationofadoublyfedinductiongeneratorride2throughcontrolforsymmetricalgridfault.ProceedingsoftheCSEE,2006,26(10):1302135.[9],,,..,2006,30(8):21226.HUJiabing,SUNDan,HEYikang,etal.ModelingandcontrolofDFIGwindgenerationsystemundergridvoltagedip.AutomationofElectricPowerSystems,2006,30(8):21226.[10]COBRECESS,BUENOE,ESPINOSAF,etal.ContributionstotheDC2busvoltagecontrollerofback2to2backvoltagesourceconverters//Proceedingsof31stAnnualConferenceofIEEEIndustrialElectronicsSociety,2005,Nov6210,2005,Raleigh,NC,USA:247522480.[11],,,..,2007,27(6):126.GUOJindong,ZHAODongli,LINZixu,etal.Researchofmegawattlevelvariablespeedconstantfrequencywindpowerunitcontrolsystem.ProceedingsoftheCSEE,2007,27(6):126.[12],..,1998,18(2):87290.LIAOYong,YANGShunchang.Excitationcontrolofalternationcurrentexcitationgenerator.ProceedingsoftheCSEE,1998,18(2):87290.(1979),,,,E2mail:[e-mail](1964),,,,,E2mail:[e-mail](1981),,,(81continuedonpage81)662007,31(21)PowerElectronicsSpecialistsConference,Jun23226,1997,StLouis,CA,USA.Piscataway,NJ,USA:IEEE,1997:3172322.[9]SMEDLEYKM,CUKS.One2cyclecontrolofswitchingconverters//Proceedingsofthe22ndAnnualIEEEPowerElectronicsSpecialistsConference,Jun24227,1991,Boston,MA,USA.Piscataway,NJ,USA:IEEE,1991:8882896.[10]ZHOULuowei,SMEDLEYKM.Unifiedconstant2frequencyintegrationcontrolofactivepowerfilters//Proceedingsofthe15thAnnualIEEEAppliedPowerElectronicsConferenceandExposition,Feb6210,2000,NewOrleans,LA,USA.Piscataway,NJ,USA:IEEE,2000:4062412.[11]QIAOChongming,SMEDLEYKM.Three2phasebipolarmodeactivepowerfilters.IEEETransonIndustryApplications,2002,38(1):1492158.[12]QIAOChongming,JINTaotao,SMEDLEYKM.Unifiedconstant2frequencyintegrationcontrolofthree2phaseactivepowerfilterwithvectoroperation//Proceedingsofthe32ndAnnualIEEEPowerElectronicsSpecialistsConference,Jun17221,2001,Vancouver,Canada.Piscataway,NJ,USA:IEEE,2001:160821614.[13]QIAOChongming,JINTaotao,SMEDLEYKM.One2cyclecontrolofthree2phaseactivepowerfilterwithvectoroperation.IEEETransonIndustrialElectronics,2004,51(2):4552463.[14]QIAOChongming,SMEDLEYKM.Generalthree2phasePFCcontrollerforrectifierswithaseries2connecteddual2boosttopology.IEEETransonIndustryApplications,2002,38(1):1372148.(1977),,,E2mail:[e-mail](1965),,,,(1982),,,Three2phaseThree2wireThree2levelAPFBasedonVectorModeOne2cycleControlDuring30390CHENBing,XIEYunxiang,SONGJingxian(SouthChinaUniversityofTechnology,Guangzhou510640,China)Abstract:InordertoreducetheswitchingstressandlossofAPF,andtoenhancetheAPFpowerratingforlowerpressureswitchdevices,thispaperpresentsathree2phasethree2wirethree2levelAPFbasedonvectormodeone2cyclecontrolduring30390.Themaincircuit