磁悬浮列车用直线同步电机特性研究

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1、大连交通大学硕士学位论文磁悬浮列车用直线同步电机特性研究姓名：庞洪帅申请学位级别：硕士专业：交通信息工程及控制指导教师：王英20081201大连交通大学工学硕士学位论文AbstractAsthefastgrowingofnationaleconomy，increasingtraffictensionisbecomingakeyfactorthatrestrictsthedevelopmentofeconomy．Consequentlyremittingandimprovingtra伍cconditionhasbeenaurgentproblem．Asalate—modellan

2、dtransportation,themagneticsuspensiontraindependsontheelectromagnetismforcesuspendingthetraininorbitandmovesforwardbythelinersynchronousmotor．Ithasnoacarriagewheelorcorrespondingtransmission-mechanismandnomachinerytouch晰tllthefloor．Aboveall，itcanstablyworksinhigh-speed．Meanwhile，thecostofthe

3、motionandbusinessarelowandthereisnoenvironmentalpollutionwhichmakesitaprospectdevelopment．Inthefirst,thedissertationsummarizesthemagneticsuspensiontrainsimply．Settingofffromthecharacteristicofthemagneticsuspensiontrain，itintroducesthemagneticsuspensiontechnologyaswellassomerelevanceknowledge

4、oflinersynchronousmotoLThen，along丽也thefirdteelementmethod，itcalculatesthetractionforceandthesuspensionforceandanalyzesthechangesofthemwitheachparameterunderdifferentconditionsuchasthegascracklength、magnetizingcurrent、armaturecurrent．Atthesametime，buildingthemathematicmodelofthelinersynchrono

5、usmotorwithwhichitsimulatesthestartingprocessofthemotor、thesteadystateprocess．Inscccession，therelationbetweenthetractionforceandthesuspensionforcecalculatedbyboththefiniteelementmethodandthemodelisbrieflycompared．Atlast,towardsshort·currentproblemofthemagneticsuspensiontrain，thisdissertation

6、analyzesthechangeofmagnetizingcurrent、tractionforceandsuspensionforcewhenthetrainisoperatedin50kin／h,150km／h,250跳350km／hduringtheperiodofshortcircuithappened．Atonetime，thechangeconditionsofthetractionforceandsuspensionforcewhenthetrainhasthesamespeedbutdifferentshort-currentpointaleanalyzed．

7、Alltheprocessesoftheshort．currentaresimulawxlwiththeMauabsoftware．KeyWords：MagneticSuspensionTrain；LinerSynchronousMotor；MatlabSimulation；FiniteElementMethod；LinerSynchronousMotorMathematicModeln大连交通大学学位论文独创性声明本人声明所呈交的学位论文是本人在导师指导下进行的研究工作及取得的研究成果。尽