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1、2010InternationalConferenceonDigitalManufacturing&AutomationDynamicAnalysisandControlofanEnergyStorageFlywheelRotorwithActiveMagneticBearingsZhangKai,DaiXingjian,ZhangXiaozhangDepartmentofEngineeringPhysicsTsinghuaUniversityBeijing,Chinazhangkai@mail.tsin
2、ghua.edu.cnAbstract—FlywheelenergystorageisapromisingtechnologyThekeytechnologiesinaflywheelenergystorageforprovidingintermediateenergystorage.Anenergystoragesystemincludemagneticbearings,compositerotorandflywheelissupportedbyactivemagneticbearings(AMBs)t
3、opowerelectronics.Magneticbearingsareusedtoachieveachievehighspeedrunningandincreaseenergyefficiencyofhighspeedrotationofflywheels,compositematerialtotheenergystoragesystem.Theconfigurationoftheflywheelincreasethehighestrimvelocitiesofarotorandthereforero
4、toriscomplexanditsrotordynamicbehaviorinfluencestheincreaseenergystoragedensity,andpowerelectronicstorunningoftheAMBrotorgreatly,includingitsstrongrealizeenergystorageandreleasewithhighefficiency.gyroscopiceffectsandbendingvibrationmodeswhoseTheflywheelsy
5、stemdiscussedhereissupportedbyfrequenciesarewithintherotor’soperationspeedrange.AMBsanditsrotorismainlymadeofcarbonfiber,glassCarefuldynamicanalysiswasperformedfortheflywheelfibercompositesandhighstrengthaluminumalloy.Glassrotor.Basedontheanalysisresults,
6、aneffectivecontrollerfiberandcarbonfibercompositesarewoundonthedesignfortheAMBswasperformed.Anadvancedcontrolleraluminumhubs.Therotor’stargetspeedis27000rpm.withlocaldampingenhancementandcrossfeedbacktechnologieswassuccessfullydesigned.ThecontrollercouldA
7、fteranoptimization,thecompositesflywheelstructurewellrestrainthenegativeinfluencefromthegyroscopiceffects,wasdetermined.TheconfigurationoftherotoriscomplexsuppressthebendingmodevibrationandachieveastableanditsdynamicbehaviorinfluencestherunningoftheAMBsus
8、pensionoftherotorinthewholeoperationspeedrange.rotorgreatly.Ononehand,theinertiaratiooftherotorisExperimentalresultswereprovidedandprovedtheeffectsofmuchlargerthan1.0,therotor’sgyroscopiceffectschangetheanalysisandt
