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1、HighVoltage,HighPower,HighEfficiency,Digitally-ControlledLLCConverterforTelecomApplicationsYulingHuangLucasSinopoliRoumenPetkovGueorguiAnguelovAlphaTechnologiesLtd.AlphaTechnologiesLtd.GreeconTechnologyLtd.GreeconTechnologyLtd.Burnaby,CanadaBurnaby,CanadaBurnaby,CanadaBurnaby,Canadayuling.huang@alp
2、ha.calucas.sinopoli@alpha.carpetkov@greencon.comganguelov@greencon.comAbstract-Thispaperdescribesthedevelopmentofahighsemiconductordevices;therefore,severalcircuittopologiesvoltage,highpower,andhighefficiencyLLCconverterusedinahavebeendevelopedtoresolvethisdifficulty[3]−[6].delta3-phaserectifiertha
3、tmeetstherequirementsimposedbyHowever,thesetopologiesintroduceadditionaldetrimentaltoday’stelecommarket.Initially,acomparativeanalysisofeffectsinthesystem.InSectionII,fourLLCtopologiesdifferentLLCtopologiesisperformedtodeterminethebestavailableforhighinputvoltageoperationareevaluatedtooptionforthet
4、argetedapplication.Then,anempiricalmethod,findthebestcompromisebetweenperformance,efficiency,basedontheplantfrequencyresponse,isintroducedasapracticaltechniquetodesignthevoltageandcurrentloopcost,andcomplexitythatsuitsthisapplication.compensators.Next,anovelstrategyisutilizedtocontroltheInthelastde
5、cades,averagecurrent-modecontrolhassynchronousrectifierbyexecutinganadditionalalgorithminthegainedpopularitytocontrolbothresonantandpulse-widthsystemmicrocontroller.Finally,aspecialfilterisaddedtothemodulatedconverters[7],[8].Tomeetthetelecomnoisevoltagelooptomitigatetheoutputvoltagenoisewhilerequi
6、rementswhenusingdigitalcontrol,thisstrategyrequiresmaintainingagooddynamicperformance.Thetechniquesandhighresolutionsensingfortheoutputcurrentincreasingthesolutionsdiscussedinthispaperhavebeensuccessfullyprovencostofthesystem.SectionIIIpresentsanalternativemethod,andimplementedinasoon-to-becommerci
7、alized12kWtelecom-basedonvoltage-modecontrol,whichprovidesgooddynamicgraderectifier.performanceinalloperatingconditionswhileusingordinarycurrentsensingtechniques.ThissectionalsointroducesanI.INTRODUCTIONemp
