Dynamic Analysis and Control of an Energy Storage Flywheel Rotor with Active Magnetic Bearings (1).pdf

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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