10272010916711815(2010)27664805ScienceTechnologyandEngineeringVol10No27Sep.20102010SciTechEngngBuckBoost变化器的仿真分析李雪莉(,256600)摘要PSpice是一款功能强大的电路仿真软件,仿真结果十分接近电路的真实状态应用PSpice对BuckBoost变换器的全部工作过程进行了仿真与分析,BuckBoost电路的工作过程包括电路启动时的瞬态工作过程和稳态工作过程对电路中储能元件的各种工作状态进行了分析,给出了大量直观的仿真波形,从而更进一步了解了BuckBoost变换器关键词BuckBoost变换器PSpice暂态分析稳态中图法分类号TM46;文献标识码A2010630:(1972),,,,:Emai:lxiaotaiyang1234567@126.com,,BuckBoost,,,,[1],,[2]BuckBoostDC/DC,,[3]PSPICE,BuckBoost,BuckBoost1Boost变换器及其工作原理(BuckBoost)1[4],Vin,Q,,Q,LfQ,L;Q,D,Lf1BuckBoostR,C,Lf,,:V0=D1-DVin(1)(1),DBuckBoost,D=0.5,V0=Vin;D0.5,V0Vin;,D0.5,V0VinBuckBoost(CCM)(DCM),2(a)2(b),,2(c)2BuckBoost,:(1)QD(t=0),VinLf,iLfCfLfdiLfdt=Vin(2)t=Ton,iLf(2)t=Ton,Q,iLfD,LfCf,Lf-V0,iLfLfdiLfdt=-V0(3)t=TS(TSQ),iLfQQ,VQVQ=Vin+V0=Vin1-D=V0D(4)Q,DVDVD=Vin+V0=Vin1-D=V0D(5)BuckBoost,3BuckBoostPSpice4Boost,Lf,,Lf,BuckLf,iLfBuckBoostLf,,:V0=1Ct0t1icdt=1CI0D1TS=V0CRD1TS(6)(6),t0~t12PSpice仿真及其建模PSpiceOrCAD10.5BuckBoost,Vin15V,40kHZBuckBoost3,Vin,R1,R1=40,R,R=40,BuckBoost,Lf160HQIGBTAPT50G50BN,664927:BuckBoost[5],,33电流连续模式下的升降压型DC/D变换器仿真研究3.1BuckBoostPSpice3BuckBoost,,6,,,,,(V(Cf:2))(V(V:+)-V(V:-))(I(Lf))V(Lf:1)W(Lf)5Cf560~4s:,Q,D,,CfR2(c)(4~14)s:Q(4~5)s,14s,2(a),Q,0,,,;D,CfR,VCf,BuckBoost,5(14~29)s:Q(14~15)s,29us,,,,,,,Cf4s~29sBuckBoost,,3.2PSpiceBuckBoost0~2.5ms,(V(Cf:2)-V(Cf:1))(I(Lf))5,,,1.3ms,1.2ms,1.2ms,CfLf,,4,5,66,,iLf665010,,,4,,,,5,,,7Lf,P,P,P,,,,,,78,,,BuckBoost,,,,,,,,4电流断续模式下的升降压型DC/DC(BuckBoost)变换器仿真研究,BuckBoost,3200,10uH.2ms~2.35ms,,8,Lf(V(V:+)-V(V:-))5结论PSpice,,,PSpice,BuckBoost,,,,BuckBoost,1,..:,20002..:,2001665127:BuckBoost3KazimierczukMK.TransferfunctionofcurrentmodulatorinPWMconverterswithcurrentmodecontro.lCircuitsandSystemsI:FundamentalTheoryandApplications,IEEETransactionson,Volume:47Issue:9,Sept,2000:140714124,..:,20005,,.OrCAD10.5.:,2007TheSimulationResearchofBuckBoostConverterLIXueli(WeifangOilTransportationStation,PipelineStorageandTransportationCorporation,SINOPEC,Binzhou256600,P.R.China)[Abstract]PSpiceisapowerfulsimulationsoftware,simulationresultsareveryclosetothetruestateofthecircui.tTheoverallworkingstagesofBuckBoostconverterissimulatedandanalyzedbyPSpice.TheworkingprocessoftheBuckBoostcircuitincludesthetransientprocessofstartupcircuitandthesteadyworkingprocess.AllthestagesofstoredenergyelementsofBuckBoostconverterarealsointroduced.Thelargenumberofvisualsimulationwaveformsaregiven.ThustheunderstandingofBuckBoostconverterisdeepened.[Keywords]BuckBoostconverterPspicetransientanalysissteadystate(上接第6647页)ExperimentResearchonBituminousCoalPyrolysisbyTGFTIRandDeterminationofPyrolysisKineticParametersLIUL,iQIUPenghua,WUShaohua,ZHANGJifeng,QINYukun(CombustionEngineeringResearchInstitute,HarbinInstituteofTechnology,Harbin150001,P.R.China)[Abstract]Itissignificanttostudythecomponentsandtherelevantconcentrationofvolatilemattersreleasedduringpulverizedcoalpyrolysis,whichisfundamentalforthefurtherstudyoflowNOxcombustionandNOxreductionduringcoalreburningprocess.ThedevolatilisationexperimentsoftwotypesofChinesebituminouscoalwereperformedusingTGFTIR(ThermogravimetrycombinedwithFourierTransformInfraredSpectroscopy)analysis.Fourheatingrates(10,20,50and80!/min)wereadoptedtoresearchtheweightlossandgasesevolution.ThenumericalsimulationswereperformedbyusingFGDVC(FunctionalGroupandDepolymerization,Vaporization,Crosslinking)modelontheexpermientalcoals.Itwasindicatedthatthesmiulationresultswerewellfittedforoneofthetwotypesofcoalbutnotverywellforanother.TheerrorwascausedbytheinaccuracyofthekineticparametersofthemainspeciesprovidedbyFGDVCmode.lThekineticparametersarethencorrectedbyintroducingFTIRresultstoaseriesoffirstorderformulationbyassumingthatthelightgasesevolutionareparallelandindependentinFGDVCmode.lByadoptingthecorrectedkineticparametersthesmiulationresultsareagreedwithexpermientsdatamuchbetter.[Keywords]coalpyrolysisTGFTIRkineticparametersFGDVC665210