论文---有源电力滤波器的设计.docx

编号：时间：2021年x月x日书山有路勤为径学海无涯苦作舟页码：摘要本文首先通过对电力系统中交流电压和交流电流的傅里叶分析引出了谐波这一概念。通过分析谐波的相关概念和谐波的产生原因举例分析了各种谐波源的产生过程以及谐波对电力系统和用户的影响及危害说明了抑制谐波的重要性。再通过阐述抑制谐波的各种措施得出安装滤波器是减小谐波的有效措施。接下来就是本文的重点内容即滤波器的工作原理结构控制方式。而不同类型的滤波器有不同的原理结构也不一样控制方式也是多种多样但它们之间具有密不可分联系本文进行了详细的分析。最后文章阐述并联型有源电力滤波器的设计过程包括其原理的分析结构的构思包含了主电路的设计电流跟踪方式的选取和直流侧电压的的控制以及区别于其他类型滤波器的优缺点。还成功地用matlab软件构建了一个并联型有源电力滤波器来模拟并联型有源电力滤波器减少电网谐波的实验并对其进行波形进行了FFT处理和分析。通过仿真实验研究结果证实了设计方案的正确性和可行性。关键词：谐波并联型有源电力滤波器脉宽调制连接电抗器傅里叶变换TheDesignofActivePowerFilterABSTRACTFirstlyACcurrentandACvoltageofthepowersystemareanalysisedbyTransformationofFourierinthispaperthenitcomesupwithaconceptcalledharmonic.Whileanalyzingtherelatedconceptsandcausesofharmonicitgivesexamplesofthegenerationprocessofvarietiesofharmonicequipmentandtheimpactanddamageofharmonicstothepowersystemanduserssoitcometoaconclusionthatitisimportanttoreduceharmonicofthepowersystem.installingfilterisaneffectivemeasuretoreduceharmonic.Thenextisthefocusofthecontentofthisarticlesuchastheworkingprinciplestructureandthecontrolmodeoffilterswhicharedifferentfromeachotherbuttherearelotslinkswitheachotherwhichisanalysiseddetaillyinthepaper.Finallyaparallelactivepowerfilterisdesigned.LotsofcontentsareincludedinthepaperforexamplethestructureoftheconceptionthedesignofmaincircuitselectionoftrackingmodeofcurrentandcontrolingofDCvoltage.Advantagesanddisadvantagesdifferentfromfiltersofothertypesareanalysisedtoo.IthavesuccessfullybuiltaparallelactivepowerfilteranddoneaexperimentofreducingharmonicofpowersystembythesoftwareofMATLAB.AllwaveshapesintheexperimentareprocessedandanalysisedbyFFT.Byresultsofthesimulationexperimentthevalidityandfeasibilityoftheschemeofthedesignareprovedgreatly.Keywords:harmonicshunt