基于单周期控制的三相三开关三电平boost型pwm整流器的研究

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1、华南理工大学硕士学位论文基于单周期控制的三相三开关三电平Boost型PWM整流器的研究姓名：武志贤申请学位级别：硕士专业：电力电子与电力传动指导教师：蔡丽娟20050501华南理工大学硕士学位论文由实验结果可以看出，VIENNA整流器是一种性能良好的拓扑，具有很多优点，尤其是在开关管的选择过程中可以很方便的选择所需的开关管，是一种值得推广的新颖拓扑。关键词：功率因数校正，三开关，三电平，单周期控制，统一恒频积分控制器IIABSTRACTABSTRACTWiththedevelopmentofscienceandtechnology，thepo

2、llutiontotheEarthisbecomingworseandworse．Asakindofenvironmentthepowersystemisfacedwithpollution．harmonicsandreactivepowerisoneofthebiggestpollutionofpowersystempollution．Duetotheincreasingdemandforimprovedpowerquality，harmonicsandreactivepowerproblemhavegainedconsiderableat

3、tention．Forconventionalrectifieroftenconnectuncontrolleddioderectifierwithcapacitorfilter，whichmakesinputcurrentdistortedseverely．Highorderharmonicsseverelyinterferedevicesinthepowerlineanditself．Three—phaseactivepowerfactorcorrection(PFC)isanactivemodetoeliminateharmonics，

4、whichoftenusedinmediumandhigherpowerlevels．Thetopologythree-phase／switch／levelBoost—type(VIENNA)rectifierisanovelstructureandisselcotedtobestudiedinthedissercatiOn．Itshowsespeciallythefollowingadvantagesascomparedtoconventionalthree·-phasetwo--levelconvertersystems：lowerblo

5、ckingvoltagestressonthepowertransistor，lowerharmonicsofthemaincurrent，highpowerfactorandhighreliabilitybeinginherenttothesystem．Themainachievementsareasf01lows：1．Summarizethedevelopmentofthree—phasepowerfactorcorrectionandchooseVIENNArectifierastheresearchobject．2．Introduce

6、theoperatingprincipleofVIENNArectifier．Onthebaseoftheoperatingprincipleseveralcontrolmethodsaregiven．Aftercompareone—cyclecontr01methodischosentorealizethecontr01aim．3．UnifiedConstant—FrequencyIntegration(UCI)controllerbasedonone·cyclecontrolconceptofVIENNArectifierisintrod

7、uced．4．Toverifytheconceptasimulationcircuitwasbuilt．5．Anexperimentalcircuitwasbuiltandverifiedtheconceptproposedisright．Keywords：Powerfactorcorrection(PFC)，Three—Switch，Three-LeveOne—cyclecontroI，UnifiedConstant-FrequencyIntegration111第一章绪论第一章绪论帚一早珀T匕1．1课题的理论和实际意义随着工业现代化进程的

8、不断加快，对地球环境的污染和破坏不断加剧。电力系统作为一种环境也面临着污染，公共电网中的谐波和无功问题是其中最大的一种污染，因此谐波和无功问题也日益受到重视。为了减