硕士论文-基于半桥谐振带APFC的通信整流器的设计与研究

上海交通大学硕士学位论文基于半桥谐振带APFC的通信整流器的设计与研究姓名：周强申请学位级别：硕士专业：电力电子与电力传动指导教师：陈德荣200901014APFCPWMPFCLLCLLC5500WLLC6RESEARCHANDDESIGNOFACOMMUNICATIONRECTIFIERWITHAPFCBASEDONHALF-BRIDGERESONANTTOPOLOGYABSTRACTThehugedevelopmentofthecommunicationbusinessbringsnotonlytheimprovementforhumanbeings’life,butmorestrictrequirementsforpowersuppliersofcommunicationsystems.Nowthefocusofcommunicationpowersupplyisonthenewrectifiers,withhighefficiency,smallvolume,highpowerfactorandstability.Comparetothetraditionallinearityrectifiers,highfrequencyswitchingrectifiersaremorewidelyusedincommunicationpowerfieldfortheirstrongpointsnowadays.But,traditionalHardSwitchingPWMrectifiershavelargerlossandlowefficiencyinhighfrequency.ThedevelopmentofSoftSwitchingtechnologysolvesthisproblem.Itincreasestherectifiers’efficiency,sotakesanimportantpositioninrectifier’sresearch.Ontheotherhand,thelargeusageofpowerelectronicsequipmentsmakesharmonicwavespollutionsandinterference,andisfollowedbylowerpowerfactor.PowerFactorCorrection(PFC)becomesanewhotspot.Facingsuchsituation,thispaperconductsresearchofanewcommunicationrectifier,withdesignsfocusingonDC/DCconverter,powerfactorcorrector,filterandEMC.Wegiveadetailedanalysisabout7DC/DCconverter’ssoftswitchingtopologyandpowerfactorcorrection’simplement,andbringatwo-stagestructureofanewrectifier.ThemodeliswithaLLCresonantDC/DCconverter,onwhichweanalyzetheLLCresonanttopology,selectthesuitablecontroller,anddesignthecircuit;withanAPFCcircuit,onwhichweselecttheprofessionalPFCchip,anddesigntheperipherycircuit.AlsowemakeimprovementswiththepurposeofhigherefficiencyandbetterEMC.Lastwegivearealmodelofa500Wcommunicationrectifier.Finally,thetestresultsofthesampleproductproveitsabilitytokeeprelativelyhighpowerfactorandefficiencyinawildrangeofinput,allofwhichgivesitaverypromisingapplicationprospect.KEYWORDS:Communicationrectifier,softswitching,LLCresonant,APFC,two-stagecircuitstructure2311.1[1][2]2080GDP32127%21.2[1][2][3]1.2.120708090PWM170-8080MOSFETIGBTGTRMOSFET290320-450KHz100KHz-1MHz50Hz360DC/DCPWMTurn-onTurn-offZVSZCSMOSFETIGBT450KHz--PS-ZVS-PWM4PFC1APFCDC/DCDC/DCAPFC546DSP1.2.2AC/DC48VDC/DC1150W100W280%90%3MOSFETIGBT452.2V3.3V5CAACDD1.3DC/DCDC/DCLLCEMI1DC/DCPFC623DC/DCPFCDC/DCPFCPFC72.12-1PFCAC/DCDC/DCAC/DCAPFCDC/DC20KHz48VMOSFETIGBT1PFCPWMAC/DCDC/DC2-1Fig.2-1TheStructureofGeneralDesignofConverterDC/DCEMI2.2DC/DC2.2.1DC/DCDC/DC8Pulse-WidthModulationPWMPulse-FrequencyModulationPFM2-2DC/DC2-2aRSoU=RU=iUontoU=RU=0offtoffonttT+=2-2bontTPWMTontPFMontTiSisuruitonui0tofftTton0tofftDTU/R(a)(b)2-2DC/DCFig.2-2TypicalDC/DCCircuitDC/DCPWMPWM2.2.2DC/DCDC/DCDC/DCDC/DCDC/DCBuckBoost-9Buck-BoostCukForwardFlybackPush-PullHalf-bridgeFull-bridge/2.2.3DC/DC[3]DC/DCBuckBoostHardSwitchingDC/DCDC/DCDC/DC2080/DC/DCSoftSwitchingL,C((ZVS)((ZCS)ZVSZCSMOSFET2.2.4DC/DC[7]~[12](SRC)10(PRC)(SPRC,LCC)2.2.4.1SRC2-32-41TV2TV3DV4DVrLrCrLrCSVSVSV1VinTCVoVD1RLVT1NpNs1VD3VD2VD4VT2Ns2CrLrVS2-3Fig.2-3HalfBridgeSeriesResonantConverter2-4Fig.2-4DCCharacteristicandOperatingRegionofSRC11MOSFETsfrfsfrfMOSFET2-4Q()2.2.4.2PRC2-52-6rLrCfLVinTCVoVD1RLVT1NpNs1VD3VD2VD4VT2Ns2CrLrVSLf2-5Fig.2-5HalfBridgeParallelresonantconverterDCCharacteristicofPRC122-6Fig.2-6DCCharacteristicandOperatingRegionofPRC(2-6rf)12.2.4.3SPRC2-72-8rLrCpCLCC13rLrCpCVinTCVoVD1RLVT1NpNs1VD3VD2VD4VT2Ns2CrLrVSLfCp2-7Fig.2-7HalfBridgeSeriesParallelResonantConverter2-8Fig.2-8DCCharacteristicandOperatingRegionofSPRC(2-8rf)142.2.4.4LLC[7][12][13]LLCLLC2-92-10mLrLLLCmLrLLLCLCLLC()SPRCLCCLLCVinTCVoVD1RLVT1NpNs1VD3VD2VD4VT2Ns2CrLrVSLmC1C22-9LLCFig.2-9HalfBridgeLLCResonantConverter152-10LLCFig.2-10DCCharacteristicofLLC2-10LLCLLCmfMOSFETLLC2-10rf12LLCLLC2.2.5LLCLLCDC/DC162.3PFCAPFCPFCPFPFCAPFCPFCAPFCAPFCAPFCDC/DCBoostAPFC2.3.1APFCDC/DCAPFCBuckBoostBuck-BoostCuk2.3.1.1BuckBuck2-11TVLCDVVinVoLCRLVTVDgToffTonVin2-11BuckFig.2-11BuckConverter17BuckoVinVDVVino=/2-12-1TtDon=D1Buck2.3.1.2BoostBoost2-12LCDVVinVoLCRLVTVDgToffTon2-12BoostFig.2-12BoostConverterBoostoVinV)1/(1/DVVino−=2-22-2Boost2.3.1.3-Buck-BoostBuck-BoostBuckBoostBuckBoost2-13Buck-BoostVinVoLCRLVTVDgToffTon2-13Buck-BoostFig.2-13Buck-BoostConverter18Buck-BoostoVinV)1/(/DDVVino−−=2-3D0~1oViVBuck-Boost2.3.1.4CukCukBuck-Boost2-14CukCukCuk1CLVinVoL1C2RLVTVDgToffTonL2C12-14CukFig.2-14CukConverterCukoVinV)1/(/DDVVino−−=2-42-4CukBuck-BoostCukBuckBoostBuck-BoostCukDC/DC2.3.1.5APFCBuckAPFCdVoVBuck-BoostCuk19BoostAPFCBoostAPFC2.3.2APFCAPFCPFC12APFCAPFC2.4inV=AC85~275VinnV=DC380VOU=DC48VOI=10AOP=500Wη≥0.85PF≥0.9520DC/DC3.1LLC[14]3-1LLC3-1MOSFET1TV2TV0.51DV2DVCLLCrrrCLf⋅=π21rLrCrmrmCLLf⋅+=)(21πrLmLrCVinTCVoVD1RLVT1NpNs1VD3VD2VD4VT2Ns2CrLrVSLmC1C23-1LLCFig.3-1TheCircuitofHalf-bridgeLLCResonantConverterfsfMOSZVSLLCf≥mfMOSZVSfLLC3.1.1mff≤sfLLCf3-2mff≤sf21VgvT1iLriLmVsiVD1t0t1t2t3t4tVgvT2iVD23-2mff≤sfLLCFig.3-2WaveformofLLCResonantConverterWhenmff≤sf0t~1t3-30t2TVLri1TV1C1TV-1TV3DV1TV1DVmLnrLrCmLLmiVinTCVoVD1RLVT1NpNs1VD3VD2VD4VT2Ns2CrLrVSLmC1C2iLriLmiVD1Vm3-3mff≤sfLLCFig.3-3Phase1stofLLCResonantConverterWhenmff≤sf221t~2t3-41t1TVLmiLri1TV1VDiLriLmirLrC1TVLriLmi1DV1