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,,(,210096):(SAPF)2,2。,,SAPF,“”,“”,。,,,。Matlab/Simulink。:;;;;:TN713:A:1006-6047(2011)07-0036-06:2010-07-08;:2011-04-01:(BY2010142)ProjectsupportedbytheDepartmentofScienceandTech-nologyofJiangsuProvince(BY2010142)ElectricPowerAutomationEquipmentVol.31No.7Jul.2011317201170,,,,[1]。SAPF(ShuntActivePowerFilter),,。SAPF,。SAPF,,SAPF,SAPF[2]。,,。,SAPF。,[2-13]。SAPF2,,。,“”,;,,,。,。1SAPF2。SAPF,;SAPF,,1。1(a):SAPF,。,SAPFiL[3]。1(b):,SAPF。SAPF,SAPF,iL,SAPFiCL。22.1I,,,2。iCSAPFiAiL(a)(b)iAiCSAPFiLiCL1Fig.1StructureofhybridcompensationsystemSAPF[4],ILh,IASAPF,ICh,IGh,ZG=RG+jωLG,ZC=RC+1/(jωC),RC。:IA(s)=GAPF(s)ILh(s)IAL(s)=ILh(s)-IA(s)IGh(s)=IAL(s)ZC(s)/[ZC(s)+ZG(s) ](1)3(1),GAPF(s)SAPF。[5]SAPF,4。SAPF[6],4GCD(s),,[5]:GCD(s)=Kid/(Tss+1)(2),Ts;Kid,SAPF,SAPF0≤Kid≤1,Kid=0SAPF,Kid=1SAPF,0Kid1SAPF。4,(3):GCT(s)=IA(s)Iref(s)=KiKPWMLTss2+Ls+KiKPWM(3),Ki;KPWMPWM,KPWM=Ud/Uc,Ud,Uc[7];LSAPF。(2)(3)SAPF:GAPF(s)=GCD(s)GCT(s)(4)(4)3I:GI,1(s)=[1-GAPF(s)]ZCZC+ZG(5):Ts=0.1ms,LG=0.13mH,RG=0.05Ω,C=650μF,RC=0.08Ω,Ki=5,Kid[0,1],KPWM=500。(5)bode,5,SAPF、。,,。,SAPF,LC,,。SAPF,,,。5,SAPF,,“”,5,,,“”,。2.26,ICL。,SAPF,IL,ICL,ICLSAPF。6(6),。IGh(s)=ICL(s)-IA(s)IA(s)=GAPF(s)ICL(s)ICL(s)=[ZCILh(s)+ZGIA(s)]/(ZC+ZG )(6)(6)7。G,1(s)=ZC[1-GAPF(s)]ZC+ZG[1-GAPF(s)](7),bode8。RGIGhIChCICLIAILhLG6Fig.6Single-phaseequivalentcircuitofmodelRGIGhIChCIALIAILhLG2Fig.2Single-phaseequivalentcircuitofmodelGAPF(s)IALZCZC+ZGILh-IAIGh3Fig.3Blockdiagramofmodel+4SAPFFig.4ModelofSAPF1/(Ls)KPWMTss+1KiIGGCD(s)IA-ILIref+20-30-80M/dB90-90-180θ/(°)100101102103104105f/Hz5bodeFig.5Bodeplotsofmodelundernormalcontrol0,:78,Kid≤0.5,Kid,,Kid=0.5;Kid0.5,,,,,。3:,,,SAPF,“”,;,SAPF。“”,;,。3.1,,,。,SAPF,,,[3],,、,9。,G(s),,[3,6]G(s)=0.01/(Tss+1),9:G,2(s)=ZC[1+GAPF(s)]ZG+ZC[1+G(s)GAPF(s)](8)2bode10,。,,“”,,。3.211,,,[8-14]。,UGh,Rd,Rd。11,ICLd=ICL+Id,ZCZC+ZGGAPF(s)IL+ZGZC+ZGICL+IA-IG+7Fig.7BlockdiagramofmodelZCZC+ZGGAPF(s)ILh+-IALIA++G(s)IGh9IFig.9BlockdiagramofmodelIundercompoundcontrol20-20-60M/dB-90-180-360θ/(°)100105f/Hz-270(a)Kid=0.41000-100M/dB900-180θ/(°)100105f/Hz-90(b)Kid=0.520-20-60M/dB-90-180-360θ/(°)100105f/Hz-270(c)Kid=0.60-50-100M/dB-90-180-360θ/(°)100105f/Hz-270(d)Kid=18bodeFig.8Bodeplotsofmodelundernormalcontrol1011021031041011021031041011021031041011021031045031150-100-250M/dB90-135-360θ/(°)101102103104105106f/Hz102Fig.10Bodeplotsofmodeundertwocontrolmodes,31ICLId,,UGh,:Iref=ICLd=ICL+IdId=UGh/Rd (9)(9)12。11RdC,ZCd:ZCd=ZCRdRd+ZC(10)(7)ZCZCd,:G,2(s)=ZCd[1-GAPF(s)]ZCd+ZG[1-GAPF(s)](11)13,SAPF,Kid=1,Rd=0.2,,,;Rd(12,Rd,1/Rd),,Rd=0.02Ω-10dB,,Rd=0.02Ω。,bode14。,Kid≤0.5。Kid0.5,。4,Matlab/SimulinkSAPF,,2.1,Simulink:,10-6s,odd23tb(stiff/TR-BDF2),IGBT10kHz。4.1,,“”,。15,、、SAPF。,SAPF,,,。t=0.2sSAPF,,,。16,11Fig.11Single-phaseequivalentcircuitofmodelunderactivedampingcontrolRGIGhIChCICLdIAILhLGUGhICLRdId0-40-80M/dB0-45-135θ/(°)100105f/Hz-90(b)Kid=0.50-40-80M/dB0-45-135θ/(°)100105f/Hz-90(c)Kid=0.60-40-80M/dB900-180θ/(°)100105f/Hz-90(d)Kid=114bodeFig.14Bodeplotsofmodelunderactivedampingcontrol12Fig.12Activedampingcontrol1/Rd+ICLUGhIrefId+20-30-80M/dB900-180θ/(°)101102103104105f/Hz13Fig.13InfluenceofdampingresistoronsystemRd=0.2Ω,Rd=0.05Ω,Rd=0.02Ω-900-40-80M/dB0-45-135θ/(°)100105f/Hz-90(a)Kid=0.4101102103104101102103104101102103104101102103104,:7500-50iL/A2000-200iG/A2000-200iC/A2000-200iA/A0.120.160.200.240.28t/s17Fig.17SimulativewaveformsofmodelundernormalcontrolSAPF,,t=0.2sSAPF,“”,,,。4.217,,17,SAPF,SAPF,,,,,SAPF。18,t=0.2sSAPF,,,,。5SAPF2,,,。。:[1],,.[M].:,1998:4-11.[2].[D].:,2005.CHENZhong.Researchonthekeytechniquesofshuntactivepowerfilter[D].Hangzhou:ZhejiangUniversity,2005.[3],.[J].,1995,29(3):97-101.YANGJun,WANGZhao’an.Studyonthecontrolmodesofshuntactivepowerfilter[J].JournalofXi’anJiaotongUniversity,1995,29(3):97-101.[4].[D].:,2006.FANGXin.Thedigitalcontroloncurrentofparallelactivepowerfilter[D].Wuhan:HuazhongUniversityofScienceandTech-nology,2006.[5],,,.[J].,2008,28(18):54-60.WULonghui,ZHUOFang,ZHANGPengbo,etal.Stabilityana-lysisandcontrollerdesignofhybridparallelactivepowerfilter[J].ProceedingsoftheCSEE,2008,28(18):54-60.500-50iL/A1000-100iG/A1000-100iC/A250-25iA/A0.120.160.200.240.28t/s18Fig.18Simulativewaveformsofmodelunderactivedampingcontrol500-50iL/A1000-100iG/A1000-100iC/A200-20iA/A0.120.160.200.240.28t/s16Fig.16Simulativewaveformsofmodelundercompoundcontrol500-50iL/A1000-100iG/A1000-100iC/A200-20iA/A0.120.160.200.240.28t/s15Fig.15Simulativewaveformsofmodelundernormalcontrol31StabilityanalysisandcontrolofhybridSAPFWUZaijun,ZHAOZhihong,WANGBaoan(MotionControlEngineeringResearchCenterofMOE,SchoolofElectricalEngineering,SoutheastUniversity,Nanjing210096,China)Abstract:TwostructuremodelsofhybridcompensationsystemcomposedofSAPF(ShuntActivePowerFilter)andparallelcapacitorareestablishedandtheirsystemstabilitiesareanalyzed.Itispointedoutthat,undernormalcontrol,modelisstableandsuppressesharmonicsquitewellafterSAPFisputintooperationwhilemodelisunstablebecauseofthepositivefeedback.Thecompoundcontrolstrategyisproposedformodeltoavoiditscompensationdeadzonewhiletheactivedampingcontrolisintroducedformode
本文标题:并联混合型有源电力滤波器稳定性分析与控制
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