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时间:2019-02-28
《浅谈三相四线制有源电力滤波器控制方法及仿真 》由会员上传分享,免费在线阅读,更多相关内容在工程资料-天天文库。
1、总第47卷第532期电测与仪表VoI.47No.5322010年第04期ElectticalMeasurement&InstrumentationApr.2OlO三相四线制有源电力滤波器控制方法及仿真王群京,程中杰,王俊椋,李国丽,胡存刚17张擎,漆星(1.合肥工业大学电气与自动化工程学院,合肥230009;2.安徽大学电子科学与技术学院,合肥230039;3.电子科技大学通信与信息工程学院,成都611731;4.浙江工业大学信息工程学院,杭州310014)摘要:三维空间矢量脉宽调制算法(3D—SVPWM)是解决三相四线制并联型有源电力滤波器(APF’)中线电流补偿
2、问题的有效手段。为了避免传统的0坐标变换,降低调制算法的复杂性,便于实现全数字控制,本文提出了一种针对分裂电容式APF的基于abc坐标系的3D~SVPWM算法,就是要用8个基本空间矢量来合成任意参考电压。它们构成了一个正方体,可以在空间上分成6个四面体,每个四面体由3个非零矢量和1个零矢量构成。只要确立了参考矢量位于哪个四面体中,就可以选择相应的空间矢量并计算其占空比,使逆变器输出等效的电压矢量。建立了系统仿真模型并进行了仿真实验,结果验证了该方案的有效性。关键词:三相四线制;有源电力滤波器;abc坐标系;三维空间矢量脉宽调制;仿真中图分类号:TM46文献标识码:A
3、文章编号:1001—1390(2010)04—0049—04ControlMethodandSimulationofActivePowerFilterforThree-phaseFour-wireSystemWANGQun-jingCHENGZhong-jie,WANGJun—liang3,LIGuo—li;HUCun-gang’,ZHANGQing,QIXing(1.SchoolofElectricEngineeringandAutomation,HefeiUniversityofTechnology,Hefei230009,China.2.SchoolofEle
4、ctronicScienceandTechnology,AnhuiUniversity,Hefei230039,China.3.SchoolofCommunicationandInformationEngineering,UniversityofElectronicScienceandTechnologyofChina,Chengdu611731,China.4.CollegeofInformationEngineering,ZhejiangUniversityofTechnology,Hangzhou310014,China)Abstract:Three-Dime
5、nsionalSpaceVectorPulseWidthModulation(3D-SVPWM)algorithmisaneffectivemeanstosolvetheproblemofneutralcurrentcompensationforthree-phasefour-wireShuntActivePowerFilter(APF1.Inordertoavoidthetraditional0transformationandtoreducethecomplexityofthemodulationalgorithmforeaseoffullydigitalcon
6、trol,thispaperpresentsa3D-SVPWMalgorithmbasedonabccoordinatesforAPFwithasplit—capacitorinvertertopology,thatistosynthesizeanarbitraryreferencevoltageusingeightfixedspacevectorswhichconstituteacube.ThecontrolcubeCanbesplitinto6tetrahedrons,eachofthemcontainingthreenonzeroswitchingvector
7、salongwithonezerovector.ItCanbedeterminedinwhichofthetetrahedronsanyvoltagevectorisincluded.Oncethetetrahedronischosen,thedutycyclesofeachvectorthatwillmakethevoltagevectoroftheinverterequal,onaverage,tothereferencevoltagevectorhavetobecalculated.Asimulationmodelofsystemisbuiltandsim
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