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1、TheAnalysisofInverterunderRectifierLoadusingaNonlinearRectifierModelMinChen,ChongfengZheng,ZhaomingQianXiaomingYuanCollegeofElectricalEngineering,ZhejiangUniversity,GE(China)ResearchandDevelopmentCenterCo.Ltd.,Hangzhou,ChinaShanghai,ChinaAbstractThispaperproposedanonlinearmodelforsingle-pha
2、serectifier.Withthismodel,theinteractionsbetweentheinvertersandrectifiersarecharacterized,themechanismofoutputvoltagedistortionisinvestigated,anditispossibletoanalyzethetransientresponse,systemstabilityandtoimplementthedesignoptimizationoftheinvertersystemunderrectifierloads.Thevalidityofth
3、eproposedmodelisdemonstratedbycomparisonwithresultsofthetime-domainsimulationmethodandtheexperiment.1.Introductionperturbingvoltageeffect.Paper[4]proposedafrequency-domainanalysismethodoftheuncontrolledRectifiersformalargepartofpresentelectricalrectifiers.M.Fauridevelopedaharmonicmodelofloa
4、ds,thereforetheharmoniccurrentsproducedbynonlinearloadbymeansofcrossedfrequencytheserectifiersflowinthepowersystems.Iftheadmittancematrix[5].Paper[6]describestheeffectofnonlinearloadsarepoweredbyanon-idealsourcesupplyvoltageharmonicsontheresponseofwhoseoutputimpedanceisnotnegligible,whichis
5、single-phaserectifierandproposedacurve-fittingalwaysthecasewithmostpracticalpowerelectronicsmodeltoestimatethecurrentdistortion.Paper[7]madeequipments,theharmoniccurrentscancauseundesiredastudyonthemechanismoftheoutputwaveformeffects,suchasoutputvoltagedistortion,oscillationanddistortionofP
6、WMVSIwithrectifierload,andabruptterminationoftheloadpower,etc..Astheproposedthatthetopology-shiftandtheresulteddeliveryofhighqualityelectricalpowerbecomessteady-statedifferencebetweenthemisthecauseoftheincreasinglyimportant,theimpactoftheinteractionoutputdistortion.betweennonlinearloadsandt
7、heequipmentsneedstobeHowever,allthesemethodsaretoosophisticatedthoroughlycharacterized,andanaccuratemodeloftobeuseddirectlyinthedesignofinverters.theserectifiersisneeded.Nevertheless,theydon'tprovidetheanalyticalinsightManyeffortshavebeendonetorevealthen