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1、VectorControlledDoublyFedInductionGeneratorforWindApplications矢量控制的双馈感应风力发电机的应用程序Dr.AniGole,Dept.ofElectricalandComputerEng.,UniversityofManitoba.ThisdocumentdiscussesthetheoryofoperationbehindthedoublyfedgeneratorcasedevelopedbyAniGole(Univ.ofManitob
2、a,Canada)andOmNayak(NayakCorporation,Princeton,NJ).ThecontrollerconceptisbasedonthepaperbyPenaetal[1].DescriptionofRotorCurrentGenerationCircuit(GeneratorPWMConverterandControls)转子电流产生电路的描述（发电机脉宽调制转换器及其控制）双馈感应发电机ABCIsaIsbINDUCTIONGENERATOR13.8kV,500HP
3、IscVbVcCTRLSTLCABIMbcWa&Controls&ControlsGRIDPWMConverterPWMConverterbabcacGENERATORVaira,irb,ircFig1:DoublyFedInductionGeneratorTheDoublyfedinductiongenerator/motorallowspoweroutput/inputintothestatorwindingaswellastherotorwindingofaninductionmachine
4、withawound14rotorwinding.双馈式感应发电机/电动机通过绕线转子绕组将功率输出/输入感应电机的定子绕组和转子绕组。Usingsuchageneratoritispossibletogetagoodpowerfactorevenwhenthemachinespeedisquitedifferentfromsynchronousspeed.使用这样发电机即使在机器转速完全不同于同步速度时也可以得到一个好的功率因数。Suchmachinescanthereforeoperatewi
5、thouttheneedforexcessiveshuntcompensation.这种发电机不需要过度的并联补偿。Therotorcurrents(ira,irb,irc)ofthemachinecanberesolvedintothewellknowndirectandquadraturecomponentsidandiq.双馈感应发电机的转子电流(ira,irb,irc)可以分解为直接和正交分量id和iq。Thecomponentidproducesafluxintheairgapwhich
6、isalignedwiththerotatingfluxvectorlinkingthestator;id部分在空气间隙处产生磁通，这与连结定子的旋转磁通量是一致的。whereasthecomponentiqproducesfluxatrightanglestothisvector.而iq产生的磁通与id产生的垂直。Thetorqueinthemachineisthevectorcrossproductofthesetwovectors,andhenceonlythecomponentiqisco
7、ntributestothemachinetorqueandhencetothepower.机器的转矩是这两个向量的向量积，因此，只有iq与机械转矩变化有关，进而导致功率的变化。Thecomponentidthencontrolsthereactivepowerenteringthemachine.id控制输入机器的无功功率。Ifidandiqcanbecontrolledprecisely,thensocanthestatorsiderealandreactivepowers.如果iq和id能被
8、精准控制，于是定子侧的实际功率和无功功率就能被准确控制。Theprocedureforensuringthatthecorrectvaluesofidandiqflowintherotorisachievedbygeneratingthecorrespondingphasecurrentsreferencesira_ref,irb_refandirc_ref,andthenusingasuitablevoltagesourcedconverter(VSC)basedcurrents
