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PI,,(,430074):(PEL),PEL;10kVA,PWMVSRAPFSTATCOMUPQCUPFC:;;;;;:TM461:A:100326520(2009)0621451206:(50777026);(2007ABA051)ProjectSupportedFoundedbyNationalNaturalScienceFounda2tionofChina(50777026),HubeiProvincialNaturalScienceFounda2tionofChina(2007ABA051).PowerElectronicLoadBasedonPIControlHUANGZhao2xia,ZOUYun2ping,WANGCheng2zhi(CollegeofElectricalandElectronicEngineering,HuazhongUniversityofScienceandTechnology,Wuhan430074,China)Abstract:Totestthepowersources,apowerelectronicload(PEL)isresearchedinthispaper.TheconnectionschemeofthePELandthecontrolschemeofthePELwhichbasesonmathematicalmodeltotesttheDCpowersourcesandvariousthree2phaseACpowersourcesarepresented.Theeffectofthewholesystemperformancebypa2rameterisanalyzedinqualityandinquantitybasedoncontroltheorywhichincludesJurytest,DynamicFactorA2nalysisandFrequencyAnalysis.A10kVAprototypeisestablishedtotestACpowersources.Thesimulationandexperimentalresultsaregiventoverifytheproposedanalysisandcontrolschemes.TheanalysisconclusionprovidestheexperienceforthepowerPELengineeringinthedesignandapplications.Itstheoriesanalysisalsocanbeappli2cabletoAPF,STATCOM,UPQC,UPFCandsoon,whichbaseonthePWMVSR.Keywords:powerelectronicload(PEL);controlscheme;mathematicalmodel;jurytest;dynamicfactoranalysis;frequencyanalysis0,,(UPS),[1]1990SureshGuptaUPS[2],PWM,PWM[329],PWM(PWMvoltagesourcerectifier,PWMVSR)(powerelectronicload,PEL)PEL,,,,;10kVA,;,PELPEL,PWMVSRAPFSTAT2COMUPQCUPFC1PWMVSRPEL15413562009630HighVoltageEngineeringVol.35No.6June30,2009(imitationconverter,IC)(grid2connectionconverter,GCC)[10,11],1,T11T14IC,L1,,;T21T24GCC,L2,TR,,GCC,,2PEL,,-1,Ptest=Pnet_in+Pback;Qtest=Qnet_in;Qback=0(1),Pnet_inQnet_in;PtestQtest;PbackQbackPEL1,PEL()2,Pback=Ptest12;Pnet_in=(1-12)Ptest(2)190%,290%,Pnet_in012Ptest,,5,,[12],Ptest=Pnet_in+Pback;Qtest=Qback;Qnet_in=0(3)3(a),PEL,,3(b),IC,3(b),T11T13,T14,T12;3(c),boost,22.1,,,,090,IC;-900,IC;=0,1Fig.1CircuitofthePEL2Fig.2ConnectioncircuitofthePELandthetestedequipment3Fig.3Circuittodifferentpowersource,,IR,2.2PEL11,L1,u1,ua1b1,r1(2541June2009HighVoltageEngineeringVol.35No.6),i1,L1di1dt=u1-ua1b1-i1r1(4)2i1=idc1S1;ua1b1=udcS1(5),S1;idc1,S1=1,T11(D11)T14(D14)on;0,T11(D11)T13(D13)orT12(D12)T14(D14)on;-1,T12(D12)T13(D13)on3,idc2,udc,idc_c,Cdudcdt=idc1+idc2=idc_c(6)4,idc2=i2S2;ua2b2=udcS2(7),S2,S2=1,T21(D21)T24(D24)on;0,T21(D21)T23(D23)orT22(D22)T24(D24)on;-1,T22(D22)T23(D23)on5,L2,us,ua2b2,r2(),i2,L2di2dt=us-ua2b2-i2r2(8),,Lndindtun-uanbn-inrn(9)Gn(s)=in(s)uLn(s)=in(s)un(s)-uanbn(s)=1Lns+rn(10)Gdc(s)=Udc(s)idc_c(s)=1Cs(11)3PWM,[13,14](P),,,,,4PPIFig.4ControlblockdiagramofthePEL5Fig.5Simplifiedcontrolblockdiagramofthecurrentloop,,(PI)[15],,(rn),Ts;,,uanbn=un+kn(i3n-in);kn=LnTsn(12)4(a)IC,PLL,,iref1,,z-PWM4(b),PI,;(11),udc4PWM[16],=(1-m)Ts,(5):z[14],:3541200963566rKPFig.6SteadyzoneofKPwhenconsiderrornotG(z,m)=Zm[1-e-sTs1Ls+r]=(1-z-1)Zm(1s1Ls+r);G(z,m)=z-e-rTL-e-mrTL(z-1)rz(z-e-rTL),m[0,1](13)D(z,m)=KPG(z,m)1+KPG(z,m),m[0,1](14):=z2-e-rTLz+KPrz-KPre-rmTLz-KPre-rTL+KPre-rmTL(15),:(1)0,(-1)0,|a0||an|(16)L=1.0mH,T=(1/12800)s,,(16),KP6(a)rKP,r2,KP6(b)r,KP;,KP,,,,,,,,7KPFig.7AffectionofKPtothesteadycharacteristics8PELFig.8VoltageandcurrentwaveformofsimulationloadandLessajou’sfigure1,(16),KPL/T,,,r0.5,KP,7(a),;,,KP,,,,PEL7(b)4541June2009HighVoltageEngineeringVol.35No.6,,,,,,,Bode5,10kVA,:10kVA,220V,220V,400V,50Hz,50Hz,12.8kHz8PEL6060,,,;,9GCC,-1,,24,,,,10IC,,r,,11PEL,,,212PEL,,,,,,85%,,6PWM,,,,,9Fig.9thevoltageandcurrentwaveformoftheGCCandLessajou’sfigure10,Fig.10AcvoltageandcurrentofICwithdifferentKP11Fig.11DCbusvoltagewaveformofthePELandtheinputvoltagewaveformofimitationconverter12Fig.12EnergysavingeffectofthePELconstructed,554120096356;PWMVSRAPFSTAT2COMUPQCUPFC,10kVA,,PEL[1]KennedyG,BurtonP.Ameasurementmoduleforautomatedpowersupplytestequipment[C]DigitalObjectIdentifier10.1109/IMTC2000,Vol.2.[S.l.]:IEEE,2000:8492854.[2]SureshGupta,RichardRuth.LoadbankeliminationforUPStesting[C]ProcofIAS90.[S.l.]:InstituteofAeronauticalSciences,1990:104021043.[3]ChuCL,ChenJF.Self2loadbankforUPStestingbycirculat2ingcurrentmethod[J].ProIEE2ElectPowerApplicat,1994,141(4):1912196.[4]AyresCA,BarbiI.AfamilyofconvertersforUPSproductionburn2inenergyrecovery[J].IEEETransonPowerElectron,1997,12:6152622.[5]Shyh2JierHuang,Fu2ShengPai.Designandoperationofburn2intestsystemforthree2phaseuninterruptiblepowersupplies[J].IEEETransonIndustrialElectronics,2002,49(1):2562263.[6],,,.PWM[J].,2007,27(7):94297.LIChun2long,SHENSong2hua,LUJia2lin,etal.Digitalcon2trolwithcompensationofdelayforPWMrectifier[J].Proceed2ingsoftheCSEE,2007,27(7):94297.[7],,.[J].,2006,21(12):35239.ZHAOJiang2feng,PANShi2feng,WANGXun.HighpowerenergyfeedbackACelectronicloadanditsapplicationinpowersystemdynamicphysicalsimulation[J].TransactionsofChinaElectrotechnicalSociety,2006,21(12):35239.[8],,.[J].,2006,12(4):972100.PANShi2feng,ZHAOJian2feng,WANGXun.StudyofhighpowerACelectronicload[J].PowerElectronics,2006,12(4):972100.[9]WuR,DewanSB,SlemonGB.APWMAC2DCconverterwithfixedswitchingfrequency[J].IEEETransonIndustrialApplicat