improving flexibility and control quality of renewable-energy-based grid-connected inverter论文

improving flexibility and control quality of renewable-energy-based grid-connected inverter论文

ID:33812493

大小:12.37 MB

页数:122页

时间:2019-03-01

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1、学校代号:10532学号:HB201009019密级:普通湖南大学博士学位论文IM呼RoVINGFLEⅪBILITYANDCoNTRoLQUALITYoFRENEWABLE—ENERGY—BASEDGRID.CoNNECTEDINVERTER学位申请人姓名:N衄丛婴婴盟必(医空仨】培养单位:电氢墨信息王猩堂随导师姓名及职称:矍塞熬援专业名称:电氢王猩研究方向:电越厦量先进控剑理论论文提交日期:2Q!垒生Q垒旦!垒吕论文答辩日期:2Q!垒生Q§且Q窆目答辩委员会主席:黄宜道教援IMPROVINGFLEXIBILITYANDCONTROL

2、QUALITYOFRENEWABLE.ENERGY.BASEDGRID.CoNNECTEDINVERTERAThesisSubmiaedtoGraduateSchool0fHUNANUNIVERSITYByNGUYENTRUNGNHANLecturerInPartialFulfillmentoftheRequirementsfortheDegreeOfDoctorofPhilosophyofElectricalEngineeringSCHOoLoFELECTRICAL&INFoRMATIoNENGINEERINGSupervisorP

3、rofessorLuoAn05.2014Copyright2014,佃7舢0Ⅲ4唧4㈣0舢6㈣2删YHUNANUNⅣERSITYDECLARATIoNI,NGUYENTRUNGNHAN,herebydeclarethattheworkpresentedinthisPhDthesisentitled‘‘IMPROVINGFLEXIBILITYANDCONTROLQUALITYOFRENEWABLE-ENERGY-BASEDGRID—CONNECTEDINVERTER'’ismyoriginalworkandhasnotbeenprese

4、ntedelsewhereforanyacademicqualification.Wherereferenceshavebeenusedfrombooks,publishedpapers,reportsandwebsites,itisfullyacknowledgedinaccordancewiththestandardreferencingpracticesofthediscipline.smdent'ssi印舢e:幺地∽Date:_LOL岛.际t1..—/CopyrightStatementPermissionisherewith

5、grantedtoHunanUniversitytocirculateandreproducefornon—commercialpurposes,atitsdiscretion,thisthesisupontherequestofindividualsorinstitutions.Theauthordoesnotreserveotherpublicationrightsandthethesisnorextensiveextractsfromitbeprintedorotherwisereproducewithouttheauthor’

6、SwrittenpermissionThisthesisbelongsto:1.Secure口.andthispowerofattorneyisvalidafter2.Notsecure盔(Pleasemarktheabovecorrespondingcheckboxwith“4”)Author’SSiSupervisor’Date:—ZO—I£4.o<,f1Date:—A—91毕支、llDEDICATIoNThisthesisisdedicatedtomywife,myfamily,myfriends,andmybeloved摘要当

7、今世界面临着传统石油能源存量日益减少和温室气体造成全球气温变暖的双重问题。近年来,基于分布式发电的可再生能源应用技术得到了迅速的发展。电力市场的逐渐自由化、电力电子半导体技术的日趋成熟和现代控制技术的进步,使得基于可再生能源的分布式发电技术得到了迅速发展。然而,分布式能源在并网时却带来了一系列问题,如:谐波失真、热备用等。这些问题在微网系统中尤其明显。随着分布式能源的参与和非线性负荷的增加,电网电能质量受到的影响增大,主要体现在:频率振荡、电压波动和谐波电流增加等。目前已有的技术虽然能够解决这些问题,但其缺乏灵活性,操作复杂。当系统参

8、数由于环境温度、工作时间、设备质量等因素而变化时,系统的输出性能和稳定性得不到保证。因此,需要一种能够更智能、更灵活的控制策略,既能够增加系统的稳定性和可靠性,又能够提高电能治理的能力。针对三相并网逆变器,本文设计了一种

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