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《基于虛擬同步發(fā)電機(jī)的微電網(wǎng)的逆變器控制的研究》由會(huì)員上傳分享，免費(fèi)在線(xiàn)閱讀，更多相關(guān)內(nèi)容在學(xué)術(shù)論文-天天文庫(kù)。
1、萬(wàn)方數(shù)據(jù)西南交通大學(xué)碩士研究生學(xué)位論文第1I頁(yè)AbstractDistributedgeneration(DG)hasbeenahotresearchtopicintheworldinrecentyears，whichcanimprovethesecurityandreliabilityofpowersystem．Bymimicingthecharacteristicsofsynchronousgenerator,themicro-gridinverterbasedonthevirtualsynchronousgenerators(VSG)carlconnecttoth
2、egrid．Comparedwiththetraditionalcontrolmethods，VSGcanimprovethecompatibilityandstabilitybetweenthe鰣dandDGandCanadapttoavarietyofoperatingsystemmodes．Inthispaper,theinverterof3-phaseand4-legtopologywasresearchedcombinedaresearchingtopic．Themaincontentsofthispaperareasfollowed：Mathematical
3、modelingoftheVSGAnalyzingthemathematicalmodelsofsynchronousmotorsandthethree-phasefour-leginverter,themathematicalmodelingoftheVSGwasgotbytheuseoftheequationsofmotionoftherotorsynchronous，motorfluxequation，andelectromagnetictransientrelationships．Theactive-frequencycontrollerandthereacti
4、ve-voltagecontrollerweredesignedandoptimized，whichcouldoperatethethree-phasefour-leginvertertomimicasynchronousgenerator．Thesynchronizationcontrolmethodbasedonvirtualsynchronousgeneratorwasresearched．Twodifferentwaysofsynchronizationandgrid·connectedsolutions(thedifferenceWaswhethertoadd
5、aphaselockedloop)weredesignedfromtheprincipleofgddconnectedcontrolofsynchronousgenerator,theadvantagesanddisadvantagesofwhichwasanalysised．UsingthewaywithoutlockGrid-phaseloopcontrolcanmaketheVSGconnecttothegridsmoothly．ThebehaviorsoftheVSGunderdifferentoperationmodesofthemicrogridwerean
6、alysised．Thecharacteristicsofthepoweroutputunder咖d-connectedoperationandislandoperationwereresearched．Inordertoachieveoptimalcontrolindifferentoperatingmodes，differentcontrolstrategiesweredesigned．Thecontrolloopofbottomwasdesignd．Toimprovethequalityofvoltage，thebottomcontrolloopofvoltage
7、andcurrentwasdesignedbasedonthequasiproportionalresonantcontroller．Thethree-dimensionalspacevectormodulationalgorithmproducingdrivingwaveformforfourbrigealmswasresearchedandachievedbysimulationandexperiment．Theexperimentalplatformwassetup．Inordertoverifythecorrectnessofth
