开关电源的数字峰值电压—峰值电流控制技术研究

《开关电源的数字峰值电压—峰值电流控制技术研究》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。

1、西南交通大学硕士学位论文开关电源的数字峰值电压—峰值电流控制技术研究姓名：陈妮申请学位级别：硕士专业：电力电子与电力传动指导教师：许建平20080501西南交通大学硕士研究生学位论文第1I页西南交通大学硕士研究生学位论文第l

2、I页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西南交通大学硕士研究生学位论文第1V页IDPV-PC

9、controlisperformedbysimulationresults，fromwhichweconcludethatIDPV-PCcontrolhasfastertransientresponsespeedthanDPV-PCcontr01．Keywords：Switching--modepowersupply；Digitalcontrol；PeakVoltage··PeakCurrentcontrol；O