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电力系统自动化 2013
基于电流源型变换器的多端直流风电系统Keywords: current,source,converter,wind,energy,conversion,system（WECS）,multi-terminal,system,direct,current（DC）wind,farmManuscript,received,February20,2013. Abstract: Acurrentsourceconverterbasedmulti-terminaldirectcurrent（DC）windenergyconversionsystem（WECS）isproposed.ThecurrentsourceDC/DCconverterisadoptedtoconnectawindturbinetoaninverterwithmaximumpowerpointcontrol.EachturbineisassociatedwithaDCsourcebyparallel-connectedtoacommonDClink.AfterDCpowercollection，acurrentsourceinverter（CSI）usinggateturn-offcomponentsisusedforthegridconnectionduetoitsflexiblereactivepowercontrolandshortcircuitprotectioncapabilities.Forsuchaparallelconnectionconfiguration，theCSIoperatesinaninputvoltagecontrolmode，whichmaintainstheDClinkvoltageconstant.Thedynamicresponsesofcombinedmechanicalandelectricalsystemsareinvestigatedwiththreedifferentoperationcases.SimulationandexperimentalresultsdemonstratethefeasibilityandstabilityofthecurrentsourceDC/DCconverterbasedmulti-terminalDCWECS.
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