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:(2005GG2107002):2007-11-23:2008-04-0326520095:1006-9348(2009)05-0262-0424马西庚,白丽娜((),257061):AC-DC,,24,,,,24,,,MATLAB/SIMULINK,:;;24;;:TM743:BAnalysisandMATLABSimulationof-aNew24-PluseRectificationSystemMAXi-geng,BAILi-na(CollegeofInformationandControlEngineering,ChinaUniversityofPetroleum,DongyingShandong257061,China)ABSTRACT:Three-phasehigh-powerrectifieriswidelyusedelectromotorandhigh-powerAC-DCtransformation,buttherearemanyproblemssuchasharmonicwavesandlowpowerfactor.Withtheincreasingneedofgreenpower,itbecomesmoreimportanttoreducethedisturbanceonelectricalnetwork.Anewmulti-pulserectifierisusedtoimprovetheinputcurrent.The24-pulserectifierbasedonautotransformerisanalyzedindetailintheaspectsofautotransformerconnection,inputcurrentandKVAratingoftheautotransformer.TheoreticalanalysisindicatesthattheautotransformerhasexcellentinputfactorandtherequiredVAratingsismuchlessthanitsoutputpower,thusthesizeandpricecanbereducedalot.Atlast,thesimulationexperimentresultsverifyitsfeasibility.KEYWORDS:Autotransformer;VAratings;24-pulserectification;Analysis;Simulation1AC-DC,,PWM,,,,[1][2],,PWM,,,THD,,,24,,5711131719,,,2241,,415,34242.1242V3,V1,V2,V4415a,262124(V1,Vb1,Vc1,)1,6k3Vb,Vbc,Vc,:k1=0.1305k2=0.3438k3=0.0779(1)2236n1,n2,n3,n4,n5,n6,n7:n1:n2:n3:n4:n5:n6:n7=1.717:0.1305:0.1305:0.3438:0.3438:0.0779:0.0779(2)3,,:1.717*I1=k1(Ic2-Ic1)+k2(Ic4-Ic3)+k3(Ib3-I4)1.717*I2=k1(I2-I1)+k2(I4-I3)+k3(Ic3-Ib4)31.717*I3=k1(Ib2-Ib1)+k2(Ib4-Ib3)+k3(I3-Ic4)(3),IA:IA=I1+I2+I3+I4+I1-I3(4)(3)(4)IA=k11.717(Ic2-Ic1-Ib2+Ib1)+k21.717(Ic4-Ic3-Ib4+Ib3)+k31.717(Ib3+Ic4-I3-I4)+I1+I2+I3+I4(5)2.2:VA=Vmsin(t)VB=Vmsin(t-23)VC=Vmsin(t+23)(6)263,4152,a:V1=Vmsin(t+24)V3=Vmsin(t+8)V2=Vmsin(t-24)V4=Vmsin(t-8)(7)bc,VmVm,2:Vm=Vm/cos(24)=1.009Vm(8),120,:Ip=Io/4I1=n=1,3,5,4Ipncos(n6)sinn(t+24)Ib1=n=1,3,5,4Ipncos(n6)sinn(t-58)Ic1=n=1,3,5,4Ipncos(n6)sinn(t+1724)(9)315,,IA:An=4Ioncos(n6)[k11.717sin(2n3)sin(n24)+k21.717sin(2n3)sin(n8)-k31.717sin(n3)sin(5n24)+cos(n12)cos(n24)](10)NAn:An=4Ioncos(n6)[k11.717sin(2n3)sin(n24)+k21.717sin(2n3)sin(n8)-k31.717sin(n3)sin(5n24)+cos(n12)cos(n24)](11)n=5,7,11,13,17,19,IA5,7,11,13,17,19,IA24k1,k=1,2,3,,232.3,7,1.717*No,k1*No,k2*No,k3*No2,120,,15,6:|I1|=6314Io=0.2041Io(12):|I1|0.026Io(13)2k1*No:|Vk1|=0.0923Vm(14)2k2*No:|Vk2|=0.2431Vm(15)2k3*No:|Vk3|=0.0551Vm(16):|VAB|=1.717*Vm2=1.2143Vm(17),:KVAtot=3(|I1VAB|+2*|I1Vk1|+2*|I1Vk2|+2*|I1Vk3|)0.5729VmIo(18)Vo1.6540Vm(19):KVAeqa=12*KVAtot=0.173VoIo(20)17.3%,[3]-[6]3MATLAB/SIMULINKSimPowerSystems,7:[7]3.1SIMULINK,1SIMULINKCurrentMeasurementMultimeterRMSDisplay7SIMULINK,4,(SaturableTransformer),+7.5-7.5+22.5-22.5,3.2,264Odel5sOde23tbScopeDisplay220,50,100,400mHIA44IA,,24,15,241218,4Fourier,5711131719,50,23254749,23,THD0.078,(THD=0.076)5Vo(t)524,Fourier0.0018,(S=1/23/25=0.001739)424,,,:1)5711131719,23,THD0.075712,182)24,0.0018,12(0.007)18(0.003)3)17.3%,,:[1],.PWM[J].,1996,(2):29-32.[2],.[M].:,2002.[3].[D].,2004.57-61.[4],,.[M].:,2000.33-37.[5].[M].:,1993.1-2.[6].[J].,2006,43(3):30-32.[7],.MATLAB[M].:,2001.[](1957-),(),,,,,;(1983-),(),,,265