浅谈三相四线制有源电力滤波器控制方法及仿真

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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