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ID:36348957
大小:3.38 MB
页数:131页
时间:2019-05-09
《光伏发电系统及其控制的研究》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、合肥工业大学博士学位论文光伏发电系统及其控制的研究姓名:郑诗程申请学位级别:博士专业:电力电子与电力传动指导教师:丁明20041201舍肥工业大学博士学位论文ResearchonPhotovoltaicGenerationSystemandItsControlAbstractAtpresent,whilemostcountriesallovertheworldaredevelopinggreenandrenewableenergy.solarenergyisacceptedcommonlybecauseofitsunus
2、ualadvantages.Photovoltaic(PV)systemsmpaidmoreattentiontoamongitsvariousapplications.WithpricereductionofPVmodulesanddevelopmentofPVtechnology,theroleofPVgenerationsystemsisgraduallychangedfromsupplementalenergytosubstituteenergy.Andstand·aloneandgrid·connectedPV
3、generationsystemswillbethetrendamongPVapplications.Thispaperdealswithsuchkeyproblemsastruem“imumpowerpointtracking(TMPPT)ofPVarrayandoptimummanagementofbattery,improvementofinverteroutpII【wave,islandingeffectandsoonbyestablishingrelatedsimulationmodels,applyingno
4、velcontrolstrategiesandexperimentsvalidation.Themoredetailsaboutanthnr’sworkareasfoUows:1.TheperformancesandcharacteristicsofPVgenerationsystemswithdifferenttopologiesaredescribedjndetails.2Anovelcontrolstrategyisdevelopedinwhichpowervariationofloadisusedinsteado
5、fthepowervariationofPVarrayoutputtotrackthemaximumpowerpointofPVarray.AndTMPPTofpVarrayisrealizedbyapplyingthevariablestepvoltagedisturbancecontrolalgorithm.Inadditiontothat,thefunctioncombiningtheoptimummanagementofbatterywiththeTMPPTofPVarrayisattainedbyimprovi
6、ngthecontrolalgorithminstand·alonePVgenerationsystems.3.Thesine—waveinverteroperationprincipleofresidentialstand-alonePVgenerationsystemisanalyzedindetails.AndthefuzzyadaptivePIcontrolstrategybasedontheoutputvoltagefeedbackispresented,correspondingexperimentsared
7、one.TheexperimentresultsshowthatthecontrolstrategyaboveimprovesdynamicperformanceofsystemmoreefficientlythantraditionalPIcontr01.4.TheoperationprincipleofresidentialhighfrequencyPVgrid—connectedgenerationsystemisanalyzedindetails.Thenovelstrategywhichcombinesther
8、epetitivecontrolwiththeutilityvoltagefeedforwardcontrolispresentedforthefirsttime.Thecorrespondingsimulationmodelissetup,relatedsimulationsandexperimentsaredon
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