文档名：横向磁通永磁直线电机电磁振动特性分析
摘要：横向磁通永磁直线电机的电负荷与磁负荷相互解耦,且各相之间相互解耦,易于实现模块化和多相化,因此在石油开采领域有着良好的应用前景.首先,该文基于磁场调制原理,对横向磁通永磁直线电机的径向电磁力波进行了推导计算,得出对径向电磁力波影响最大的因素为轴向气隙磁通密度分量与径向气隙磁通密度分量,在此基础上对径向电磁力波的时空特性与频谱特性进行仿真计算,得出电枢磁通密度对电机径向电磁力波的频谱特性的影响;然后,考虑到电机实际运行中可能出现的次级偏心问题,揭示偏心度的大小对径向电磁力波幅值的影响,并对比不同偏心度下的电机径向磁拉力与轴向磁拉力,定量分析偏心度对不平衡磁拉力的影响;最后,为避免共振,利用有限元软件对电机的初级进行了模态分析与谐响应分析,结果表明低速状态下横向磁通永磁直线电机的额定运行频率较低,不会引起初级的共振,适合用作往复式潜油电泵的驱动电机.
Abstract：Astheonlypowersourceofthereciprocatingsubmersiblepumpsystem,theoperationperformanceofthesubmersiblelinearmotordirectlyaffectstheoperationperformanceofthewholepumpsystem.Therefore,theselectionoflinearmotorisparticularlyimportant.Asaspecialmotorwithhighthrustdensity,transversefluxpermanentmagnetlinearmotor(TFPMLM)benefitsfromthetransversefluxstructure,theelectricalloadandthemagneticloadaremutuallydecoupedandeachphaseismutuallydecouped,andthemotoriseasytoachievemodularizationandmultiphase,basedontheabovecharacteristics,TFPMLMismoresuitableforapplicationinthefieldofoilexploitation.Intheactualprocessofoilexploitation,thedisturbancefromtheoutsideofthemotorandthevibrationofthemotorwillleadtothereductionoftheinsulationofthemotorandthusreducetheservicelifeofthemotor.InordertosolvethevibrationproblemofTFPMLM,theradialelectromagneticforcewaveofTFPMLMisderivedinthispaper,andthentheeccentricityproblemwhichmayoccurintheoperationofthemotorisstudied.Finally,theprimarymodeandelectromagneticvibrationcharacteristicsofTFPMLMareanalyzedandsummarized.Firstly,theelectromagneticwaveofTFPMLMisanalyzed,andtheexpressionsoftheprimaryandsecondarypermeabilityandmagnetomotiveforceofthemotorareobtainedbyusingtheprincipleofmagneticfieldmodulation,andthemagneticdensityoftheairgapisobtained.Onthisbasis,themagneticdensityofthesyntheticairgapisobtainedbyconsideringtheroleofthearmaturewinding.Maxwellstresstensormethodwasusedtoobtaintheexpressionsofelectromagneticforcewavesactingontheprimaryteethinalldirections.Then,accordingtotheprincipleoflinearsuperpositionofmagneticdensity,theairgapmagneticdensitywasdecomposedintoarmaturemagneticdensity,primarypermanentmagnetmagneticdensityandsecondarypermanentmagnetmagneticdensity.Bycombiningtheaboveexpressions,thesimplifiedmathematicalexpressionofradialelectromagneticforcewaveswasfinallyobtained.Thenthetemporalandspatialcharacteristicsandspectralcharacteristicsofradialelectromagneticwavesaresimulatedandtheinfluenceofarmaturemagneticdensityonthespectralcharacteristicsofradialelectromagneticwavesisobtained.Secondly,inviewofthesecondaryeccentricitywhichmaybecausedbymotorvibration,theinfluenceofeccentricityonelectromagneticwavespectrumcharacteristicsisanalyzed,andtheresultsshowthatthesecondaryeccentricityhasgreaterinfluenceonthe3rdand6thorderharmonics.Bycomparingtheradialmagneticpullandaxialelectromagneticforcewaveofthemotorunderdifferenteccentricity,itisconcludedthatwhenthesecondaryeccentricityfaultoccurs,alargeunilateralmagneticpullwillbegeneratedintheradialdirectionofthesecondary,andtheamplitudeofthrustfluctuationwillincrease.Finally,inordertoavoidresonance,themodalanalysisandharmonicresponseanalysisoftheprimaryofTFPMLMarecarriedout.Theresultsofmodalanalysisshowthatthemotorwillnotresonateduetoelectromagneticforce.Theresultsofharmonicresponseanalysisshowthatcomparedwiththeprimaryteeth,theelectromagneticforcewavehasagreaterimpactontheoutersurfaceoftheprimarycircumference.
作者：赵玫 赵君 左思承 禹国栋 张华强 Author：ZhaoMei ZhaoJun ZuoSicheng YuGuodong ZhangHuaqiang
作者单位：哈尔滨工业大学电气工程及自动化学院哈尔滨150001;特种电机与高压电器教育部重点实验室(沈阳工业大学)沈阳110023哈尔滨工业大学电气工程及自动化学院哈尔滨150001哈尔滨工业大学电气工程及自动化学院哈尔滨150001;国网江西省电力有限公司超高压分公司南昌330096
刊名：电工技术学报
Journal：TransactionsofChinaElectrotechnicalSociety
年，卷(期)：2024, 39(1)
分类号：TM359.4
关键词：横向磁通永磁直线电机 径向电磁力波 电磁振动 偏心度
Keywords：Transversefluxpermanentmagnetlinearmotor radialelectromagneticforcewave electromagneticvibration eccentricity
机标分类号：TM351TH165+.3U463.631
在线出版日期：2024年1月18日
基金项目：国家自然科学基金，特种电机与高压电器教育部重点实验室项目横向磁通永磁直线电机电磁振动特性分析[
期刊论文] 电工技术学报--2024, 39(1)赵玫 赵君 左思承 禹国栋 张华强横向磁通永磁直线电机的电负荷与磁负荷相互解耦,且各相之间相互解耦,易于实现模块化和多相化,因此在石油开采领域有着良好的应用前景.首先,该文基于磁场调制原理,对横向磁通永磁直线电机的径向电磁力波进行了推导计算,...参考文献和引证文献
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