具有功率因数校正的全桥移相软开关电源设计

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1、万方数据ABSTRACTConventionalswitchingpowersupplyisusuallylowefficiency,largesizeandweight，andstabilityisnothigh．Itishard．switchwhichmakesefficiencyfallingtoabout70％．ThemajorpollutingsourceofelectricandelectronicsystemiStheharmoniccurrent，SOweusuallyusepowerfactorcorrectionckcuittoel

2、iminatetheproblematthesource．Soft．switchingtechniqueiSahotspotofpowerelectricresearch．It、SthekeytechniqueinhighfrequencyconverrtenThezero．voltage．switching(zvs)phase．shiftfuUbridgeDC／DCconverteriSanadvancedDC／DCconverterwithsoft—switchingtechnology．A1li出powerandhighperformanceSM

3、PSisdesignedinthisdissertationtomeetthedemandofffsconsumers．Itconsistsofforwardstageandbackwardstage，ofwhichtheforwardstageiSasingle．phaseBoostPowerFactorCorrectioncircuitusingICUC3854．ThebackwardstagemaincircuitusingICUCC3895iSaFull-bridgeconverterusingphase-shiftfullbridgesoft

4、switchingtechnology．Basedonthedetailedanalysisoftheprincipleofsingle-phaseactivePFC，thehi鲈poweractivePFCcircuitisdesigned，andthemethodofdesigningboostinductor、boostcapacitanceandthepowerswitchtubeiSalsogiveninthedissertation．Ahighpowerphase．shifted．controlsoft．switching削l—bridge

5、converteriSdesignedandsimulatedbySaber,andtheconditionofachievingZVS(ZeroVoltageSwitching)isstudiedindetail．EfficiencyiS86％．powerfactoriS0．97．Finally,thewavesofaprototypearegiven．KeyWords：PowerFactorCorrection；ZeroVoltageSwitching；ElectromagneticCompatibility；Phase-shiftedcontro

6、l万方数据第一章1．11．21．31．4第二章2．12．22．32．42．5第三章3．13．23．33．43．5第四章4．14．2目录绪论⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．1课题研究背景⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．1高频开关电源⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．11．2．1高频开关电源的定义和应用领域⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．．11．2．2高频开关电源的发展趋势⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．．2高频开关电源

7、专用集成电路的分类和发展⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．3课题研究内容和安排⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．4大功率开关电源总体方案的研究⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．7总体结构设计⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．7开关电源中的电流检测电路⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．7散热设计⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．82．3．1元件寿命与温度⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．82．3．2散热器⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯

8、⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．92．3．3温度信号采集电路⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯