英文文獻(xiàn)閱讀筆記精編版

1、 英文文獻(xiàn)閱讀筆記Title：DistributedVirtualInertiaBasedControlofMultiplePhotovoltaicSystemsinAutonomousMicrogridAuthor：Won-SangIm,Member,IEEE,ChengWang,StudentMember,IEEE,WenxinLiu,SeniorMember,IEEE,LimingLiu,SeniorMember,IEEE,andJang-MokKim,Member,IEEESource：IEEE/CAAJOURNALOFAUTOMATICASINICA,VOL.4,NO.3,JULY2

2、017Researchquestion：Sinceanautonomousrenewablemicrogridusuallyhasmuchsmallerinertia,thecontrolsystemmustbeveryfastandaccuratetofightagainstthesmallinertiaanduncertainties.Toreducethedemandingrequirementsoncontrol,thispaperproposestoincreasetheinertiaofphotovoltaic(PV)systemthroughinertiaemulation.在摘

3、要中作者簡要敘述了本文研究內(nèi)容即：尋找一種方法來增加PV系統(tǒng)的慣性以降低系統(tǒng)的控制要求。同時，在Introduction部分，作者進(jìn)一步對研究問題進(jìn)行了詳細(xì)的描述。Methods：Theinertiaemulationisrealizedbycontrollingthecharging/dischargingofthedirectcurrent(DC)-linkcapacitoroveracertainrangeandadjustingthePVgenerationwhenitisfeasibleand/ornecessary.Bywelldesigningtheinertia,theDC-l

4、inkcapacitorparametersandthecontrolrange,thenegativeimpactofinertiaemulationonenergyefficiencycanbereduced.Theproposedalgorithmcanbeintegratedwithdistributedgenerationsettingalgorithmstoimprovedynamicperformanceandlowerimplementationrequirements.Simulationstudiesdemonstratetheeffectivenessofthepropo

5、sedsolution.為了克服系統(tǒng)慣性較低的問題，作者提出了一種新的控制方法，在對此方法進(jìn)行推導(dǎo)與演算之后又用軟件仿真的方式驗(yàn)證了此方法的周期性。Findings/results：Inspiteofthedisconnectionformthegridat20sor5%loadincreasechangeat40s,thesystemcanbecontrollabletosatisfythesupply-demandbalance.Actually,itisbecauseoftheincreasedsysteminertia.Inthistest,inertiacoefficientHPVf

6、ortwoPVsareboth4.5.Ifthetwoinertiacoefficientsarelowerthan4,thesystembecomesunstableafter20s.AsshowninFigs.12(c)and12(d),thetwoPVsystemsaregeneratingtheactivepowersbasedonthevirtualinertiaalgorithmsothatitcanpreventfrequencycollapse.Therefore,theproposedvirtual103U405U(b)卜K；Jinertiacontrolcanhelpsta

7、bilizingsystemwhentheupper-levelcontrolreferencecannotbedeliveredfrequentlyenough103U405U(b)卜K；J102030102030405060(c)DFIC410203fl405060mes1020MS60Fig.12.Activepowerof5RGswiththeproposedalgorithm作者在對比了使用這種新的控制算法前后的仿真波形圖之后，得出來此種控制方法在一定的應(yīng)用范圍內(nèi)，具有更優(yōu)的控制性能的結(jié)論。Discussion/conclusionConclusion可以分為以下五個小部分：Rest

8、atementsoftheresearchquestionThispaperpresentsavirtualinertiacontrolstrategyforPVsystemsinautonomousmicrogrid.ThebasicideaistoadjustgenerationbasedonasimplifiedSGmodel.TheincreasingordecreasingPVsystemgenerationisrealizedbyadjustingtheDC-linkvoltageandPVarrayoutput.DiscussionoftheresultByintegrating

9、theproposedsolutionwithapreviouslydevelopeddistributedgradient-basedcoordinationalgorithm,transientperformancecanbeimprovedandthedemandingrequirementonupdatingfrequencycanberelaxed.(3)Significanceoftheresearch:Thesolutionissuitableforautonomousmicrogridswhentheyhavesurplusrenewablegenerationandwhenc

10、onsiderationontransientperformanceoutweighsenergyefficiency.ThebasicideacanbeextendedtoothertypesofRGswithDC-linkcapacitors.(4)Limitsoftheresearch:Thesolutiontriestomakemicrogridworklikealargepowergridwithlargeinertia.Thus,itcannotunlockthepotentialsofpowerelectronicsbasedmicrogridintermsofflexibili

11、tyandfastresponse.(5)Furtherresearchwork:Futureworkshouldbefocusedondesigningadvancedfastandaccuratemicrogridcontrollers.Tone：weakIndicativesentencepattern：AmodelisdevelopedforaTheobjectiveofistoAccordingtoFromonecanseethatTheexperimentalresultsrevealthatRelevancetomystudy：Thedirectionofmyresearchismotorandelectricalappliances.Thecircuittopologyusedinthisdocumentisoneofthemostappliedcircuitstructuresinourelectricalspecialty.Readingthisarticleisveryhelpfulforustomasterthecharacteristicsofthiscircuittopology.Thecontrolmethodproposedinthispaperhasalsosolvedthepr