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1、西南交通大學(xué)碩士學(xué)位論文開關(guān)電源的數(shù)字峰值電壓—峰值電流控制技術(shù)研究姓名:陳妮申請學(xué)位級別:碩士專業(yè):電力電子與電力傳動指導(dǎo)教師:許建平20080501西南交通大學(xué)碩士研究生學(xué)位論文第1I頁西南交通大學(xué)碩士研究生學(xué)位論文第l
2、I頁AbstractDuetothehighpowerconsumingcharacteristicofthenextgenerationprocessors,theregulationrequirementforpowerconvertersystemsbecomesmoreandm
3、oredemandinginindustry.Sinceithastheadvantagesofgoodprogrammability,flexibilityandreliability,digitalcontrolsystemhasthepotentialtoachievehighperformancecontrolofswitching—modepowersupply(SMPS).Themotivationofthisresearchistoexplorenewdigitalcontrolalgorit
4、hmsforSMPStoachievehighdynamicperformancecontr01.Twoadvanceddigitalcontrolalgorithmsaresummarizedinthisthesis,andmadeanintroductionandananalysisondigitalPeakVoltage—PeakCurrent(DPV-PC)controlalgorithmtoimproveitscompletionintheory.DPV-PCcontrolofSMPScombin
5、esadvantagesofPeakVoltage-PeakCurrentmodecontrol,includingoverloadcurrentprotectionandrobustdynamics,andadvantagesofdigitalimplementation,suchasprogrammability,flexibility,andscalability.InContinuousConductiveMode(CCM),DPV-PCcontroltechniquewithdifferentmo
6、dulationmethods(single·edgeanddual·edgemodulation)isstudiedonBuckconvertertopology.Inthedigitalcontrolloopofswitchingconverter,thetimedelayfordigitaloperationsisinevitableanditisatleastoneswitchingcycle.Toovercomethistimedelay,thealgorithmcalledanimprovedd
7、igitalPeakVoltage·PeakCurrent(IDPV-PC)controlispresentedandcomprehensivelystudied.SmallsignalmodelofBuckconverterwithDPV-PCcontrolisderivedbyusingstatespaceaveragemethod.Andtheoutputimpedance,line-to—outputandcontrol--to--outputtransferfunctionsareobtained
8、subsequently.TheoreticanalysisandsimulationresultsshowthatIDPV-PCcontroltechniquehasabettertransientcontrolperformanceforpowerswitchingconverterthanDPV-PCcontroltechnique.ThecomparisonbetweenthetransientbehaviorsofDPV-PCcontroland西南交通大學(xué)碩士研究生學(xué)位論文第1V頁IDPV-PC
9、controlisperformedbysimulationresults,fromwhichweconcludethatIDPV-PCcontrolhasfastertransientresponsespeedthanDPV-PCcontr01.Keywords:Switching--modepowersupply;Digitalcontrol;PeakVoltage··PeakCurrentcontrol;O