文档名：双并列转子永磁直驱电机转子不平衡力分析与优化
摘要：双并列转子永磁直驱电机受轴间距限制,设计时会切掉部分定子铁心和绕组,造成转子电磁力不平衡.为最大限度地抑制转子所受的不平衡电磁力,该文从双并列转子结构出发,分析了电机绕组电感参数不对称的原因,提出通过合理设计线圈跨距和分布平衡三相电感.在此基础上,构建转子所受总电磁力的数学模型,理论分析各个分力的来源及影响因素,研究各个分力对转子所受总电磁力的影响,提出了优化占空角、优化耦合间距、采用定子端部不对称结构、采用转子偏心结构和切除部分单元电机五种优化方法,实现对转子所受电磁力的优化,探讨了不同方法的优化效果,以及其对转矩脉动的影响,总结了不同优化方法的优缺点.
Abstract：Mostparallelsynchronousdriveequipment,suchasthetwo-rollmillandtwin-screwpump,aredrivenbyaninductionmotorwithsynchronousmechanicalgear.Suchdrivesystemshavelargevolumes,poorsynchronizationofmasterandslaveshafts,requiringregularmaintenance.Adual-parallelrotorpermanentmagnetdirect-drivenmotorhasgraduallycomeintoview.Duetothedistancelimitationbetweenrotatingshafts,partofthestatorcoreandwindingsarecutoffinthedesignofadual-parallelrotorpermanentmagnetdirect-drivenmotor,resultinginunbalancedrotorelectromagneticforce.Therefore,thispaperanalyzestheinductanceparameterasymmetryofthemotorwindings.Inductanceparametersofthemotorwithwindingspitchof4and3arecalculated.Onthisbasis,amathematicalmodelforthetotalelectromagneticforceontherotorisconstructed,andtheinfluenceofeachcomponentforceontherotor'stotalelectromagneticforceisstudied.Fiveoptimizationmethodsareproposedtooptimizetheelectromagneticforceontherotor:optimizingthedutyangle,optimizingthecouplingdistance,adoptingtheasymmetricstatorendstructure,adoptingtheeccentricrotorstructure,andeliminatingpartoftheunitmotors.Finally,theoptimizationeffectsofdifferentmethodsontorqueripplearediscussed.Theadvantagesanddisadvantagesofdifferentoptimizationmethodsaresummarized,layingafoundationforstudyingdual-parallelrotorpermanentmagnetdirect-drivenmotors.Thefollowingconclusionscanbedrawn:(1)Thelong-pitchcoilofthemodularstructuremaycauseasymmetricthree-phaseinductanceparameters.Three-phaseinductancecanbeeffectivelybalancedbyreasonablyselectingthewindingpitchandtheheadendoftheA-phasewinding.(2)TheelectromagneticforceFtotalontherotorincludestheelectromagneticforceF1betweenthestatorwithwindingsandthecorrespondingrotor,themagneticforceFmagbetweentwopermanentmagnetrotorsinthecouplingarea,theforceFendbetweenthecoreendandtherotoroutsidethedutyareainthecouplingarea,andthemagneticresistanceforceFend,cogoftherotoragainstthecoreendinthecouplingareaandadditionalelectromagneticforceFad.TheXdirectionforceofFtotalisrelatedtotheaboveforces,whiletheYdirectionforceofFtotalisonlyrelevanttoF1.F1,Fmag,andFendarethemostimportantcomponentsofFtotal.(3)AccordingtotheanalysisoftheFtotal,fivemethodsareproposedtoweakentheFtotal.Theinfluenceofthefiveoptimizationmethodsontheelectromagneticforceisgiven,andtheadvantagesanddisadvantagesofthefiveoptimizationmethodsarediscussed.Themethodwitharotoreccentricstructurehasthebestoptimizationeffectbutrequireshigherprocessingtechnology.Themethodofeliminatingpartialunitmotorsisthemostpractical.(4)Themotorcanoutputratedelectromagnetictorqueusingfiveoptimizationmethods.Inpracticalapplication,thecombinationofvariousoptimizationmethodscanbeconsidered.
作者：陶大军 陈阳 李峥 戈宝军Author：TaoDajun ChenYang LiZheng GeBaojun
作者单位：大型电机电气与传热技术国家地方联合工程研究中心(哈尔滨理工大学)哈尔滨150080
刊名：电工技术学报 ISTICEIPKU
Journal：TransactionsofChinaElectrotechnicalSociety
年，卷(期)：2024, 39(10)
分类号：TM351
关键词：双并列转子 永磁直驱电机 电磁力 优化方法
Keywords：Dual-parallelrotor permanentmagnetdirect-drivenmotor electromagneticforce optimizationmethod
机标分类号：TH113.1TM311TP277
在线出版日期：2024年5月31日
基金项目：国家自然科学基金双并列转子永磁直驱电机转子不平衡力分析与优化[
期刊论文] 电工技术学报--2024, 39(10)陶大军 陈阳 李峥 戈宝军双并列转子永磁直驱电机受轴间距限制,设计时会切掉部分定子铁心和绕组,造成转子电磁力不平衡.为最大限度地抑制转子所受的不平衡电磁力,该文从双并列转子结构出发,分析了电机绕组电感参数不对称的原因,提出通过合理设计...参考文献和引证文献
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