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1、重庆大学硕士学位论文英文摘要ABSTRACTWiththedevelopmentofpowerelectronicdevices,harmonicpollutioncontrolhasattractedmoreandmoreattention,andPowerFactorCorrectiontechnologyhasbecomeoneofthehottechnologiesinthefieldofpowerelectronics.Currently,BoostconverterismostwidelyusedforPFCa
2、sitssimplecircuit,powerswitchiseasytodrive,bettercircuitperformance,andthelittledistortionofinputcurrent.Inthisthesis,inputinductorcontinuousmodeofquadraticBoostPFCconverterhasbeenstudiedandanalyzedasBoostPFCconverterinCCMmodehasasmallerinputinductorcurrentripple.
3、ComparedwithconventionalBoostPFCconverter,quadraticBoostPFCconverterhasasmallerinputinductorcurrentrippleandoutputvoltageripple,whichreducethesizeofpre-EMIfilternetwork,thusreducingthevolumeandweightoftheconverterandthecostoftheequipment.Firstly,thispaperbrieflyde
4、scribesbackgroundandsignificanceoftheresearch,andtheresearchstatusanddevelopmentdirectionofactivepowerfactorcorrection(PFC)circuit.Thenthispaperanalyzesseveralcommonlyusedmaincircuitsofthepowerfactorcorrectiontechniquesanddescribesthecontrolmethodandtheprincipleof
5、thecontinuousmodeanddiscontinuousmode,andpointedoutthatthemaincontentsofthepaper.DetailedanalysesfordifferentoperatingmodesofthequadraticBoostPFCconverterarepresentedandthecorrespondingworkwaveformsaregiven.Throughtheanalysisoftheinputinductorcurrentrippleandoutpu
6、tvoltagerippleofbothtraditionalBoostPFCconvertersandquadraticBoostPFCconvertershowsquadraticBoostPFCtopologycaneffectivelyreducetheinputinductorcurrentrippleandoutputvoltageripplewaves.Andtheanalysesofthedutycyclerangeandvoltagestressarepresentedtoo.Inordertoverif
7、ythecorrectnessoftheoreticalanalysis,modelingforthecontinuouscurrentmodeoperationoftheconverterisdevelopedinthispaper.Inaddition,detaileddescriptionofthedesignofthepeakcurrentcontrollerispresented.Andthetheoreticalanalysiswasverifiedbysimulation.Finally,thecalcula
8、tionmethodoftheinputinductorcurrentrippleoftheCCM-DCMoperatingmodeisalsopresented.Thestatespaceequivalentmodelofthisoperatingmodeoftheconverterisestabli