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1、永磁同步电动机的电磁设计与分析摘要永磁同步电动机(PMSM)是一种新型电机,永磁同步电动机具有结构简单、体积小、重量轻、损耗小、效率高等优点,和直流电机相比,它没有直流电机的换向器和电刷等缺点。和异步电动机相比,它由于不需要无功励磁电流,因而具有效率高,功率因数高,转矩惯量大,定子电流和定子电阻损耗小等特点。本文主要介绍永磁同步电动机(PMSM)的发展背景和前景、工作原理、发展趋势,以异步起动永磁同步电动机为例,详细介绍了永磁同步电动机的电磁设计,主要包括额定数据和技术要求,主要尺寸,永磁体计算,定转子冲片设计,绕组计算,磁路计算,参数计算,工作特性计算,起动性能计算,还列举了相应的算
2、例。还通过Ansoft软件的Rmxprt模块对永磁同步电动机了性能分析,得出了效率、功率、转矩的特性曲线,并且分别改变了电机的三个参数,得出这些参数对电机性能的影响。又通过Ansoft软件Maxwell2D的瞬态模块对电机进行了仿真,对电机进行了磁场分布计算,求出了电流、转矩曲线和电机的磁力线、磁通密度分布图。关键词 永磁同步电动机;电磁设计;性能分析70-ThedesignofPermanent-MagnetSynchronousMotorAbstractPMSM(Permanent-MagnetSynchronousMotor)isanewtypeofmotor,whichhast
3、headvantagesofsimplestructure,smallvolume, lightweight, lowloss, highefficiency.ComparedwiththeDCmotor,ithasnoDCmotorcommutatorandbrush.Comparedwiththe asynchronousmotor,becauseit doesnotrequire no powerexcitation current,Ithastheadvantagesofhighefficiency,highpowerfactor,largemomentofinertia,st
4、atorcurrentandsmallstatorresistanceloss.Thepapermainlyintroducesthe PMSM'sdevelopment backgroundandforeground, workingprinciple, developmenttrend,takingasynchronous startpermanent magnetsynchronousmotorasanexample,itintroducesindetailthe electromagnetic designofPMSM,thatmainlyincludesthe ratedda
5、ta andtechnicalrequirements, maindimensions,permanentmagnet calculation,rotorandstatorpunching,windingcalculation,magnetcircuitcalculation,parameterscalculation,performancecalculation,calculationofstartingperformance,andalsoliststherevevantexamples.WeaslocananalysetheperformanceofPMSMthroughtheR
6、mxprtmoduleofAnsoftsoftwareandconcludethatthecharacteristiccurveofefficiency,power,torque.Bychanging two parametersofthemotor,Igettheoptimalscheme ofthemotor.Through transient moduleofAnsoftsoftware Maxwell 2D tosimulatethe motorparameters,themagneticfielddistribution ofthe motor iscalculated,I
7、canbeobtainedthecurvesofthe currentandthetorque,thedistributionofmagneticlineofforceandthedistributionofmagneticfluxdensity.KeywordsPMSM;Motordesign;Performanceanalysis70-目录摘要……IAbstractII第1章绪论41.1课题背景41.2永磁电机发展趋势51.3本文研究主要内