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《非隔离型H6桥单相光伏逆变器无功补偿调制及并网电流波形改善控制_刘斌_粟梅_林小.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、第36卷第4期中国电机工程学报Vol.36No.4Feb.20,201610502016年2月20日ProceedingsoftheCSEE©2016Chin.Soc.forElec.Eng.DOI:10.13334/j.0258-8013.pcsee.2016.04.020文章编号:0258-8013(2016)04-1050-11中图分类号:TM46非隔离型H6桥单相光伏逆变器无功补偿调制及并网电流波形改善控制12122刘斌,粟梅,林小峰,孙尧,王辉(1.广西大学电气工程学院,广西壮族自治区南宁市530004;2.中南大学信息
2、科学与工程学院,湖南省长沙市410083)ReactivePowerCompensationModulationandWaveform-improvingControlStrategyforNon-isolatedH6-typeSingle-phasePhotovoltaicGrid-connectedInverter12122LIUBin,SUMei,LINXiaofeng,SUNYao,WANGHui(1.SchoolofElectricalEngineering,GuangxiUniversity,Nanning530004
3、,GuangxiZhuangAutonomousRegion,China;2.SchoolofInformationScienceandEngineering,CentralSouthUniversity,Changsha410083,HunanProvince,China)ABSTRACT:Inordertomeetthenewstandardrequirement流的直流分量。并通过构造PIR全程滑模面,推导并网电ofreactivepower,thispaperproposedanovelreactivepower流滑模控制
4、律,平滑了H6桥在两种调制模式的过渡过程,modulationfornon-isolatedH6bridgetypesingle-phase改善了并网电流的波形控制。最后,搭建了5kV⋅A单相光photovoltaicgrid-connectedinverter.Themechanismforgrid伏并网逆变器的实验系统,并通过对实验结果的分析,验currentdistortionofH6-typeinverterincurrentzero-crossing证了理论分析的正确性以及所提调制方法与控制方案的有pointandvol
5、tagezero-crossingpoint,whenitisrunninginthe效性。modeofreactivepowercompensation,wasanalyzed.The关键词:非隔离;单相光伏并网逆变器;无功补偿;比例–proportion-integration-resonance(PIR)currentcontrollerwas积分–谐振控制器;全程滑模控制usedforrestrainingDCcomponentingridcurrent.Astosuppressthecurrentzero-crossin
6、gdistortionandimprovethe0引言waveformofgridcurrent,globalslidingmodefunctionbasedonPIRwasconstructed,andthecontrollawofglobalsliding分布式光伏发电由于具有分散发电、就地使modewasderived.Finally,5kV⋅Aexperimentsystemof用,避免输配电损失和降低输配电投资,不需另占single-phasephotovoltaicgrid-connectedinverterisbui
7、ltto土地等优势,受到世界各国的重视[1-2]。单相分布式validatetheavailabilityoftheproposedmodulationmethod光伏发电系统中,需要采用单相并网逆变器作为光andwaveform-improvingcontrolstrategy.伏发电系统与单相电网的接口。KEYWORDS:non-isolated;single-phasephotovoltaic目前大部分的单相光伏并网逆变器仅能在单位grid-connectedinverter;reactivepowercompensatio
8、n;功率因数的工况下运行。而随着新能源并网容量在proportionintegrationresonance(PIR)controller;globalslidingmodecontrol单相电网中所占比例不断增大,单相光伏逆变器将[3]逐渐成为单