三相三线并联型有源电力滤波器设计与控制

华中科技大学硕士学位论文三相三线并联型有源电力滤波器设计与控制姓名：耿攀申请学位级别：硕士专业：电力电子与电力传动指导教师：张凯20060429IAPFAPFLCLParkd-qAPFPI+PI+PIPI;;;;IIAbstractTheharmonicpollutionofpowersystemisbecomingmoreandmoreseriouswiththeusingofpowerelectronicequipmentinpowersystem.TheharmonicsshouldbecompensatedbecauseitcandomuchharmtothepowersystemActivepowerfilter(APF)isoneofthemostimportantapproachestocontrolpowerqualitybasedonadvancedpowerelectronics.Theshuntactivepowerfilterplaysthemostimportantroleinthepastorfuture.Maincircuitdesignisakeypartofthesystematicdesign.Basedonthemodelofthree-phasethree-wireshuntactivepowerfilter,theoperationofitadoptingspacevectorcontrolisstudiedandanalyzedtorevealtherelationofmainparametersofAPF.Accordingtorequirementofinstantcurrenttracking,theestimatingformulaofoutputinductanceisproposedandthecriticalvalueofdcbusvoltageisderived.ThemethodappliedtodesignparametersofLCLoutputfilterisintroducedindetail.Real-timeandaccurateharmonicdetectionisthekeyforpracticalactivefilterimplementation.Thed-qdetectionmethodbasedonParktransformationisresearched,anditscurrentdetectionerrorisanalyzeddeeply,includinginfluencesofphaseerrorsofPLL(phase-lockedloop),timedelayofsamplinganderroroflow-passfilter.Asliding-windowiterativealgorithmisappliedinthecomputationtodetecttheharmoniccomponentsgeneratedbynonlinearloads,whichimprovesthereal-time,tracingperformanceswithlesscomputation.ThedcsidevoltageofAPFshouldbewellcontrolledforitspracticaluse.Theclosedloopofdcsidevoltagearemodeledandanalyzed.Anappliedsoft-startupschemeisalsobeenintroduced.Outputcurrentcontroldecidesitscompensationeffectdirectly.FortheshuntAPF,thepaperputsforwardthreecontrolmethodsofcurrentloop:oneisproportion-integralcontrol,anotherisadvanceproportion-integralcontrol,andthelastisproportion-integralcontrolplusrepetitivecontrolalgorithm.Theproportion-integralcontrolplusrepetitivecontrolalgorithmareadoptedtocorrecttheoutputcurrentwaveformofthevoltagesourceinverterintheAPF.Inthiscontrolstrategy,theproportion-integralcontrolisusedtoguaranteesystemdynamicperformanceandtherepetitivecontrolloopisIIItoimprovecurrentwaveformquality.Intermsoftheproposedcontrolapproachesandoperationprinciple,athree-phasethree-wireshuntactivepowerfilterisestablishedandcorrespondingexperimentandsimulationstudiesaredone.Throughthesimulationandexperiment,itcanbeverifiedthatthekeytechniquesforAPFdescribedinthispaper,includingcontrolstrategy,maincircuitdesign,harmonicdetectionandapplicationsolutions,etc,isviableandeffective,whichensurestheperformanceofactivepowerfilter.KeyWords:Shuntactivepowerfilter;low-passfilter;harmonicdetection;voltagecontrol;currentcontrol11.[1]~[4]PassivePowerFilter,PPFActivePowerFilterAPF1.11.1.1[5]~[14]():2PWM1.1.2[4]:1)32)3)4)5)1.21.2.1[15]~[26]3:;;PWM;;;LC(PPF)LC1.2.2[4](1)(2)(3)(4)(5)1.2.3(APF)APFAPF4:(1).(2)(3)(4)(5)(6)1.31.3.11.1ShuntAPFAPF1.1180APFdcuLRaibicidciscusbusauclbilcircurburaulaiscisbisci1aS1cS2cS1bS2bS2aS5APF[4]APF1.3.2[27]PWMAPF/didt[4]APFAPFAPFPWMPWM1.3.2.1[18]~[24][4]*cicici∆PWMHHHHci6PWMciciPI,,,,[1]68PWMPWM1.15One-CycleControl7PWM1.3.2.2[4]HPF1.41.4.1(1)(2)(4)(5)(6)8(7)1.4.2(1)(2)(3)(4)(5)(6)9/didtTHD/didt1.51.APFLCL2.d-q3.APFPI10PIPI+PI112.2.12.1.12-1scusbusaulailbilciai1R1Lbicidcucsaisbisci2L2.1RL1APFL2APFIGBTsaisbiscilailbilciaibici122.12.1.2sausbuscuPWMPWM2.22.2.1OausbuscusRL1aS1bS1cSNP2aS2bS2cSaibiciaurburcur1dcidcCLR2dcidcVCiLLRR2.2APFAPF2.22.2212121,,,,,ccbbaaSSSSSSLRdcCLRAPF2.1LPF132.2PWMPWM[28]~[40]2121()3aasaadcNObbsbbdcNOccsccdcNOdcdcaabbccdcNOdcabcdiLRiuSVudtdiLRiuSVudtdiLRiuSVudtdVCiSiSiSidtuVSSS⎧+=−−⎪⎪⎪+=−−⎪⎪⎪+=−−⎨⎪⎪=++−⎪⎪⎪=−++⎪⎩21iS1,,0iiSiabci⎧==⎨⎩[28]~[40](22)''''''2'''1()3aasaadcNObbsbbdcNOccsccdcNOdcdcaabbccdcNOdcabcdiLRiuSVudtdiLRiuSVudtdiLRiuSVudtdVCiSiSiSidtuVSSS⎧+=−−⎪⎪⎪+=−−⎪⎪⎪+=−−⎨⎪⎪=++−⎪⎪⎪=−++⎪⎩2-2'iSiS1'iS[]1,0'⊂iSiS'iSiSClarkParkabcd-qd1•V2.33/214•1Vtω2.33/2⎥⎥⎥⎥⎥⎥⎥⎦⎤⎢⎢⎢⎢⎢⎢⎢⎣⎡⎟⎠⎞⎜⎝⎛+−⎟⎠⎞⎜⎝⎛−−−⎟⎠⎞⎜⎝⎛+⎟⎠⎞⎜⎝⎛−=−21212132sin32sinsin32cos32coscos32πωπωωπωπωωttttttTdqabc(2-3)2-33/2dq0abc2-33/2dq2-400000021113331222dddqdcsdqqdqdcsqdcsqdcddqdcdcdcdcdcdiSRiiVudtLLLdiSRiiVudtLLLdiSRiVudtLLLSdVSSiiiidtCCCCωω⎧=−⋅+⋅−⋅+⋅⎪⎪⎪=−⋅−⋅−⋅+⋅⎪⎪⎨⎪=−⋅−⋅+⋅⎪⎪⎪=⋅+⋅+⋅−⋅⎪⎩2-40000siu==2-42-5rdddcuSV=⋅rqqdcuSV=⋅21133122dddqdcsdqqdqdcsqqdcddqdcdcdcdcdiSRiiVudtLLLdiSRiiVudtLLLSdVSiiidtCCCωω⎧=−⋅+⋅−⋅+⋅⎪⎪⎪=−⋅−⋅−⋅+⋅⎨⎪⎪=⋅+⋅−⋅⎪⎩2-515APF111RSL+1Lω1LωdSqSdqdiqi1dci232dcidcSC1dcV111RSL+2.4dq2-52.42.43/2dqdqdq0dqdqurdurqωLiq-ωLidurdurq[28]11rdsdqrdrqsqdrquuLiuuuLiuωω=+++⎧⎪⎨=−++⎪⎩2-62-62-511ddrdqqrqdiLRiudtdiLRiudt⎧+=−⎪⎪⎨⎪+=−⎪⎩2-72-7dqdq162.2.2[1]2-21111112232323aabcasadcbbacbsbdcccabcscdcdcdcaabbccdcdiSSSLRiuVdtdiSSSLRiuVdtdiSSSLRiuVdtdVCiSiSiSidt−−⎧+=−⎪⎪−−⎪+=−⎪⎪⎨−−⎪+=−⎪⎪⎪=++−⎪⎩2-82-8APFsasbscuuu1dci1dcaabbcciiSiSiS=⋅+⋅+⋅2-92-8APF/2.52.51•VShuntV•ShuntI•φθOθφ1•VShuntV•ShuntILj•1ωShuntI•2.51•VShuntV•ω50Hzsrad/314=ω2.521211)cos()sin(φωφωShuntShuntShuntILILVV+−=2-1017φωφωθsincos111ShuntShuntILVILarctg−=2-11ShuntVAPFShuntIAPF2-102-11ShuntV•ShuntVθ2-102-11ShuntV•ShuntVSPWMSVPWM11.15333SVPWM2-12SPWM1SVPWM2/31.15≈SVPWMSPWMSVPWM()1004•V()1106•V()0102•V()0113•V()0011•V()1015•VO()0000•V()1117•V2.6APF