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高速列车同步牵引系统仿真研究 Abstract Thesynchronoustractionsystemplaysanimportantroleinhigh-speedtrains.Itensurestheeffectivetransmissionanddistributionofpowerbetweendifferentmotorcoachestoachievethemaximumpoweroutputofthetrain.Inthispaper,weconductedasimulationstudyonthesynchronoustractionsystemofhigh-speedtrains,aimingtoanalyzetheworkingprinciple,controlstrategy,andperformancecharacteristicsofthesystem.Thesimulationresultsshowthatthesynchronoustractionsystemcaneffectivelyimprovetheaccelerationperformanceandenergyconsumptionefficiencyofhigh-speedtrains,andthecontrolstrategyplaysacriticalroleinachievingoptimalperformance. Introduction High-speedtrainshavebecomeapopularandeffectivemodeoftransportationinrecentyears,withthedevelopmentofhigh-speedrailwaytechnology.Inordertoachievehigherspeedsandbetterperformance,high-speedtrainsneedareliableandefficienttractionsystem.Thesynchronoustractionsystemiswidelyusedinhigh-speedtrainsduetoitsadvantagesinpowertransmissionanddistribution. Thesynchronoustractionsystemiscomposedofmultiplemotorcoachesthataresynchronizedinbothspeedandphase.Thesystemusesacontrolstrategytoadjustthepoweroutputofeachmotorcoachaccordingtothedrivingsituationandthepowerdemandofthetrain.Thisensuresthatthepowerisdistributedevenlyamongallthemotorcoaches,andthetraincanachieveitsmaximumpoweroutput. Inthispaper,weconductedasimulationstudyonthesynchronoustractionsystemofhigh-speedtrains.Weaimedtoanalyzetheworkingprinciple,controlstrategy,andperformancecharacteristicsofthesystem,andprovideinsightsforthefurtherdevelopmentandoptimizationofthesystem. Workingprincipleofthesynchronoustractionsystem Thesynchronoustractionsystemconsistsofamainpowersupply,multiplemotorcoaches,andacontrolunit.Themainpowersupplyprovidesthepowertothemotorcoaches,whichareconnectedinseriesthroughaDChigh-voltageline.Thecontrolunitreceivesandprocessesthesignalsfromthespeedsensorandcurrentsensorandadjuststhepoweroutputofeachmotorcoachaccordingly. Thesynchronoustractionsystemworksbasedontheprincipleofsynchronousr