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1、-------重庆大学硕士学位论文英文摘要ABSTRACTWiththedevelopmentofpowerelectronicdevices,harmonicpollutioncontrolhasattractedmoreandmoreattention,andPowerFactorCorrectiontechnologyhasbecomeoneofthehottechnologiesinthefieldofpowerelectronics.Currently,BoostconverterismostwidelyusedforPFCasits
2、simplecircuit,powerswitchiseasytodrive,bettercircuitperformance,andthelittledistortionofinputcurrent.Inthisthesis,inputinductorcontinuousmodeofquadraticBoostPFCconverterhasbeenstudiedandanalyzedasBoostPFCconverterinCCMmodehasasmallerinputinductorcurrentripple.Comparedwithcon
3、ventionalBoostPFCconverter,quadraticBoostPFCconverterhasasmallerinputinductorcurrentrippleandoutputvoltageripple,whichreducethesizeofpre-EMIfilternetwork,thusreducingthevolumeandweightoftheconverterandthecostoftheequipment.Firstly,thispaperbrieflydescribesbackgroundandsignif
4、icanceoftheresearch,andtheresearchstatusanddevelopmentdirectionofactivepowerfactorcorrection(PFC)circuit.Thenthispaperanalyzesseveralcommonlyusedmaincircuitsofthepowerfactorcorrectiontechniquesanddescribesthecontrolmethodandtheprincipleofthecontinuousmodeanddiscontinuousmode
5、,andpointedoutthatthemaincontentsofthepaper.DetailedanalysesfordifferentoperatingmodesofthequadraticBoostPFCconverterarepresentedandthecorrespondingworkwaveformsaregiven.ThroughtheanalysisoftheinputinductorcurrentrippleandoutputvoltagerippleofbothtraditionalBoostPFCconverter
6、sandquadraticBoostPFCconvertershowsquadraticBoostPFCtopologycaneffectivelyreducetheinputinductorcurrentrippleandoutputvoltageripplewaves.Andtheanalysesofthedutycyclerangeandvoltagestressarepresentedtoo.Inordertoverifythecorrectnessoftheoreticalanalysis,modelingforthecontinuo
7、uscurrentmodeoperationoftheconverterisdevelopedinthispaper.Inaddition,detaileddescriptionofthedesignofthepeakcurrentcontrollerispresented.Andthetheoreticalanalysiswasverifiedbysimulation.Finally,thecalculationmethodoftheinputinductorcurrentrippleoftheCCM-DCMoperatingmodeisal
8、sopresented.Thestatespaceequivalentmodelofthisoperatingmodeoftheconverteris