低電壓大電流單級功率因數(shù)校正變換器的研究與設(shè)計.pdf

1、華南理工大學碩士學位論文低電壓大電流單級功率因數(shù)校正變換器的研究與設(shè)計姓名：趙亮申請學位級別：碩士專業(yè)：電力電子與電力傳動指導教師：蔡麗娟20030515華南理工大學工學碩士學位論文AbstractWiththedevelopmentofinformationtechnologyindustry，lowv01tageandhighcurrentpowerelectronicsequipme幾tshavebeenwidelyapplied

2、Amongthe10wpowerswitchingpowersupplies，sin91e—stagepowerfactDrcorrectioncircuitisafocusofDowerelectronicstechnology，whichismoreexcellentinperformance—priceratiothantwostagePFCThispaperattemptstoassociatethesingle—stagePF

3、Ctechn0109ywithsynchronousrectifiertechn0109y，whichinsurespowerfactorandefficiencyoftheelectricalnetwork，furthermore，itisrealizedinsingle—stagecircuit，thereforehasgreaCresearchvalueFirstly，futuredevelopmentofpowerfactorc

4、orrectingandsynchronousrectifiertechnologyisdescribed，andseveralselectedtopologywithisolationofsin91e—stagepowerfactorcorrectionareanalyzed，whichmayrealizetheoutputof1owvoltageandhighcurrentFinally，thispaperpresentsthema

5、incircuitmodelbasedonSheppard—Taylortop0109yforresearchandexperiments，andanalyzesthepowerfactorwhenSheppard—TaylortopologyisoperatingunderDCM—CCMstateThemethodofstatespaceaverageisusedincircuitanalysis，andsystemicmathema

6、ticseauationandcorrespondingmodelisbuiltItissimilarwithBuckcircuitonoutputtingcharaeter，whichisapreparationfDroutputDarametercalculationThencalculatecriticalvaluesofseveralimportantparametersofthemaincircuitAccordingtoth

7、esecriticalvaluesweselectcircuitDarameters，andsimulatesusingSIMetrixcircuitsimulationsoftware，modifythecircuitparamatersandmakeamodelSMPSfordebuggingandexperimentdataanalysisHighpowerfactorisr￡alized，andtheeffieiencyisap