基于ac-link技术的并联谐振充电电源的分析

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1、万方数据西南交通大学硕士研究生学位论文第1I页AbstractCapacitorchargingpowersupplycanbeappliedtonewenergyvehicles，laserpower，guns，industrialirradiation，highpowermicrowavesystemsandotheroccasions．Withthecontinuousdevelopmentofnationaldefensebuildingandeconomicconstruction，thecapacitorchargingpowersupplypresentshighpowerf

2、actor，highpowerdensity，lowharmonic．Theenergytransferofthetraditionalcapacitorchargingpowersupplyisthefollowingthreestages：AC—DC，DC-HFAC，DC·HFAC—DC．Alarge。capacitycapacitorasanintermediateenergystoragecapacitortostoreenergytemporarilyisaddedtotheglobaltopologystructure，itwillincreasetheweightofthec

3、onverterandalsoincreaseitsvolume．ThetraditionalAC．DCconverterinputrectifiercircuitiSdiodeRectifier，SOithasalowinputpowerfactor(betweenO．5-0．7withoutcorrectioncircuit)．Foreignscholarshavesuggestedanewtransformationtechnology—AC-Linktechnology，theenergytransformationofAC-LinktechnologyisAC．．HFAC·DC．

4、AC-Linktechnologyeliminatestheintermediateenergystoragecapacitor(withoutalarge-capacityelectrolyticcapacitors)，anditscircuitbyusingresonantcircuitshasthecharacteristicsofsoft-switching．TheadvantagesofAC-DCconverterbasedonAC-Linktechnologyarehighinputpowerfactor，lowEMI，highefficiencyandSOon．Firstly

5、，thispaperhasresearchedthepresentsituationofAC-Linktechnology，analysisedthetopologicalstructure，workingprincipleandcontrolmethodsoftwotypicalconvertersbasedonAC-Linktechnology(parallelresonantandresonant)．Intheconditionofhighvoltagecapacitorchargingpowersupply，thetopologicalstructureofparallelreso

6、nantchargingpowersupplybasedonAC-Linktechnologyisproposedwithrawingonthestrengthsandweaknessesofthetwotopologies．Thebasicworkingprincipleofthenovelchargingpowersupplyisanalyzed．Thenovelchargingpowersupplyhas12workingprocesswithinacycleofwork，4workingproceduresofwhicharelink—Inductorchargingmode，2w

7、orkingproceduresarelinkinductordischargingmode，6workprocessesareparallelresonantmodeofthelink．Theequivalentcircuitmodelsofthelinkinductorchargingmodes，thelinkinductordischargemodelsandtheparallelresonantLCmodelsa