一种有源电力滤波器中igbt故障诊断及容错控制研究

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1、Mar．2015HydromechatronicsEngineeringVO1．43NO．6HydromechatronicsEngineeringhttp：／／jdy．qks．cqut．edu．cnE—mail：jdygcyw@126．comResearchonfaultdiagnosisandfaulttoleranttechnologyofIGBTinactivepowerfiltersChengGONG，，Zhen—xingLIU，CuiLI，KaiFENG，(CollegeofInformation~ieneeandE

2、ngineering，WuhanUniversityofScienceandTechnology，Wuhan430081，China)(。WuhanUniversityofScienceandTechnologyEngineeringResearchCenterofMetallurgicalAutomationandDetectionTechnique，MinistryofEducation，Wuhan430081，China)Abstract：FortheIGBT(InsulatedGateBipolarTransisto)o

3、factivepowerfilterispronetofailurewhichmayre．suitinseriousconsequences．anideaofdetectingandlocatingthebreakdownofICBTonbasisofDSPsoftwareandafaulttoleranttopologyofredundantsinglebridgearlnofactivepowerfilterareproposedinthispaper．Fol—lowingtheanalysisofthealgorithmo

4、ffaultdiagnosisofopencircuit，afaulttoleranttopologyofactivepowerfilterandaspecificimplementmethodoffault．tolerantcontrolareprovided．Meanwhile，arelatedsimulationmodelofthecontrolsystemofactivepowerfilterisestablishedontheMATLAB／SimulinksimulationplatfoFinwherethefeasi

5、bilityofthiscontrolschemeisverifiedthroughsimulationexperiments．Keywords：Activepowerfilter(APF)，IGBT，Detectingfaultthroughsoftware，Faulttolerantcontroldoi：10．3969／j．issn．1001-3881．2015．06．019Documentcode：ACLCnumber：TN713+．8quenceswillemergeatworst．Inordertoenhancethe

6、1Introductionstabilityandreliabilityofthesystem，prolongthetimeofreliableoperationoftheAPFandbuytimefortheWiththedramaticincreaseofnonlinearloadofpow—maintenanceofAPFafterthefailureofIGBTAPF．ersystem，whichismainlyrepresentedbypowerelec—faultdiagnosisandfault—tolerantc

7、ontrolofAPFhastronicdevices，problemsconcerningpowerqualityinbecomeaveryimportantsubject．Withfault—toleranttermsofvoltagefluctuation，flickerandunbalanced，controlofAPFbeinganemergingdiscipline，fewdo—three—phaseemerged．Activepowerfilter(APF)，ba—mesticresearcheshavebeend

8、oHeonit．Itshowsgoodsingonthree—phasesix--switchandbeingabletody—developmentprospects．Intermsoffault—tolerantcon—namicallycontrolthe