光伏并网逆变器MPPT技术研究概要
光伏并网逆变器MPPT技术研究概要
光伏并网逆变器MPPT技术研究概要
中图分类号:TM464论文编号:102870310.0184学科分类号:080804
硕士学硬件构造。
3)剖析了现有的太刚能光伏发电系统太Rl能电池最大功率点追踪的各种控制算法,研究它们各自的最大功率追踪控制原理,比较剖析各自优弊端及合用处合。针对扰动察看法在光照突变的状况下易产生误判,提出了一种改良方法一dP.P&O方法。并经过仿真和实验考证了dP.P&O方法能够有效改良传统扰动察看法在光照突变的状况下易产生误判的弊端,拥有较好的动向和稳态性能。要点词:太内I能电池模型,并网逆变器,最大功率点追踪(MPPT)
光伏并网逆变器MPPT技术研究
Abstract
Worldwide朗e唱yshortageandenvironmentalpollutionhaveconstrainedthedevelopmentofsociety,SOwehavetosearch,exploitandusenewalternativeenergysources.Forthisreason,solarenergyhasattractedmoreandmoreattention.Nowadays,oneimportantresearchtopicofsolarenergyapplicationisPVgrid-connectedpowergeneration,whilethekernelofthePVpowergenerationsystemisgrid-connectedinverter.
光伏并网逆变器MPPT技术研究概要
光伏并网逆变器MPPT技术研究概要
光伏并网逆变器MPPT技术研究概要
Inthisthesis,thecircuitstructureandcontrolstrategyofatwo-stagetransformerlessgrid-connectedPVinverterareintroducedfirst,andthentheMPPTtechnologiesareresearchedandanalyzedindept
h.Thena3kVAprototypeisbuiltup,andtheexperimentalresultsverifiedthecorrectnessofthetheory.Themaincontentsofthisthesisareasfollows:
1)Atfast,theprincipleandoutputcharacteristicsofsolarcellsareanalyzed.Thentwomethodstocalculatethesolarcell ’Sparametersafegivenindetail.andthentwodifferentsimulationmodelsofsolarcellsunderMatlabhavebeenbuilt.Besides,thecomparisonbetweenexperimentaldataandsimulationdataalsohasbeendone.Inaword,alltheseprovidethebasisforphotovoltaicsystemsimulation,theoreticalresearchandsystemdesign.
2)Atthesametime,somecurrenttopologiesandcontrolmethodsofthegrid-connectedinverterareanalyzedandcompared.Furthermore,theoperationprinciple,controlstrategyandsystemstructureofthe3kVAtwo —stagetransformerlessPVgrid-con
光伏并网逆变器MPPT技术研究概要
光伏并网逆变器MPPT技术研究概要
光伏并网逆变器MPPT技术研究概要
nectedinverterarealsointroducedindetail.
3)Inaddition,theprinciples,characteristicsandapplicationsofseveralcommonMPPlrmethodsareanalyzed.AsWeallknow,aseriouslimitationofthePerturb
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