欢迎来到天天文库
浏览记录
ID:53769012
大小:526.45 KB
页数:8页
时间:2020-04-25
《一种级联H桥型静止无功发生器电容电压平衡控制策略-论文.pdf》由会员上传分享,免费在线阅读,更多相关内容在应用文档-天天文库。
1、第34卷第27期中国电机工程学报Vo1.34No.27Sep.25,20142014年9月25日ProceedingsoftheCSEE~2014Chin.Soc.forElec.Eng.4621DOh10.13334~.0258—8013.pcsee.2014.27.009文章编号:0258—8013(2014)27-4621-08中图分类号:TM71一种级联H桥型静止无功发生器电容电压平衡控制策略张勇军,姚智聪2,王京,李华德(1.北京科技大学冶金工程研究院,北京市海淀区100083;2.广东电网公司佛山供电局
2、,广东省佛山市528000)ADirectCurrentCapacitorVoltageBalancingControlStrategyforH-bridgeCascadedStaticVarGenerator‘ZHANGYongjun,YAOZhicong,WANGJing,LIHuade(1.EngineeringResearchInstitute,UniversityofScienceandTechnologyBeijing,HaidianDistrict,Beijing100083,China;2.Fosh
3、anPowerSupplyBureauofGuangdongPowerGridCorporation,Foshan528000,GuangdongProvince,China)ABSTRACT:TotheissueofH—bridgecascadedstaticvar据同一相中各电容电压与其平均值的误差为各H桥调制波generator(SVG)directcurrent(DC)capacitorvoltage引入增补量,从而实现电容电压的平衡。通过Simulink数balancing,thispaperanalyz
4、edtherelationbetweenmodulation值仿真分析与实验验证,表明该文提出的调制波增补量法具wavemagnitudeandDCcapacitorvoltagevariationbasedon有良好的电容电压平衡能力,且对静止无功发生器(staticVarphaseshiftedcarrierpulsewidthmodulation(PSCPWM),andgenerator,.SVG)输出电流影响不明显。该方法控制参数少,proposedtheModulationWaveSupplementar
5、ymethod.Onthe避免了繁琐的排序运算,易于数字控制器实现,具有良好的basisofmaintainingthetotalmodulationwaveconstantand实用推广价值。keepingtheH-bridgemodulationdegreelessthan1,the关键词:级联H桥;静止无功发生器;电容电压平衡:载appropriatesupplementarywasintroducedtomodulation波移相脉宽调制;调制波wavesofeachcascadedH—bridgeresp
6、ectivelyaccordingtotheerorbetweenthevoltageofeachbridgeandthemeanvoltage0引言oftheDCcapacitorsatsamephase.Thesimulationand静止无功发生器(staticvargenerator,SVG)是当experimentalresultsprovethattheModulationWave前主要的动态无功补偿装置之一,其中级联H桥型Supplementarymethodhastheabilitytocontro
7、lthebalanceofDCcapacitorvoltageanddoesnothaveobviousinfluenceonSVG应用最为广泛【JJ,载波移相脉宽调$1J(phaseoutputcurrentoftheSVGsystem.Moreover,theproposedshiftedcarrierpulsewidthmodulation,PSCPWM)是methodhaslesscontrolparameters,andcanberealizedeasily其主要的信号调制手段l4]。与其他类型的SVG相
8、withoutanycomplexsortingoperations,andhasgoodpractical比,级联H桥型SVG具有谐波特性好、控制难度applicationvalue.小、结构简单、灵活性大、容易扩展、易于实现冗KEYWoRDS:H-bridgecascaded;staticVargeneratorrSVG);余配置、接入电网无需变压器等诸
此文档下载收益归作者所有