欢迎来到天天文库
浏览记录
ID:34598630
大小:6.64 MB
页数:70页
时间:2019-03-08
《直流微电网储能系统双向dc%2fdc变换器控制策略研究》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、万方数据太原理工大学硕士研究生学位论文theanalysisisverifiedbyMATLABanddSPACE.Thedetailsareasfollows:(1)ThispaperintroducesthedevelopmentofDCmicrogrid,andtheconfigurationoflaboratory—scaleDCmicrogridispresented.TheoperatingcharacteristicsoftwodifferentmodesofDCmicrogridareanalyzed,themodelandco
2、ntrollerofPVmoduleandbatteryaredesigned.BasedonthemathematicalmodelofPVmoduleandbattery,thecontrolcircuitofDC/DCboostconverterandbatterybi—directionalDC/DCconverteraredesignedrespectively.(2)Thispaperproposedahierarchicalcontrolstrategyforreliableandeffectiveoperationsofasta
3、ndaloneDCmicrogrid.ThefeaturesofproposedhierarchicalcontrolledDCmicrogridcanbesummarizedas:1)maximalusageofrenewableenergyandreliabilityenhancementisachievedbyHLIcontrol;2)real-timevoltageregulationcapabilityforpowermodulesandprioritizationsforcharging/dischargingoftheBESSwi
4、thdifferentSOCsareconsideredinHLIIcontrol;3)emergencyconditionsaremanagedbytheHLIIIcontr01.(3)BasedonproposedhierarchicalcontrolstrategyforenergystoragesysteminDCmicrogrid,acontrolschemeofbidirectionalDC/DCconverterandanautomaticcharging/dischargingenergystoragesystemaredesi
5、gned.Accordingtotherange,wheretheDCbusvoltagebelongsto,theoperatingmodeoftheenergystoragesystemcanbeautomaticallyjudgedandtheswitchingoveramongoperatingmodescanbeautomaticallyperformedasoccasionrequires,thustheenergystoragesystemcanbefreelyswitchedamongII万方数据太原理工大学硕士研究生学位论文c
6、harging,dischargeandidlemodes,andthedamageofthebatterycausedbythefrequentswitchingoverbetweencharginganddischargingmodesduetoordinaryfluctuationofDCbusvoltagecanbeavoided.(4)ThemodelforcontrolsystemandmaincircuitofbidirectionalDC/DCconverterofsinglebatteryenergystoragesystem
7、arebuiltinMatlab/Simulinkanddifferentcasesinchargingmodeanddischargingmodearesimulatedanalyzed.Thefeasibilityoftheproposedcontrolstrategyisvalidbyresultsofexperiments.(5)ExperimentalplatformofbidirectionalDC/DCconverterbasedondSPACEisbuilt.Thesignalacquisitioncircuit,driving
8、circuitandsoftwareprotectionmodulearedesigned.Real—timecontrolisrealizedint
此文档下载收益归作者所有