永磁同步电机毕业设计说明

页脚.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；性能分析页脚.ThedesignofPermanent-MagnetSynchronousMotorAbstractPMSM(Permanent-MagnetSynchronousMotor)isanewtypeofmotor,whichhastheadvantagesofsimplestructure,smallvolume,lightweight,lowloss,highefficiency.ComparedwiththeDCmotor,ithasnoDCmotorcommutatorandbrush.Comparedwiththeasynchronousmotor,becauseitdoesnotrequirenopowerexcitationcurrent,Ithastheadvantagesofhighefficiency,highpowerfactor,largemomentofinertia,statorcurrentandsmallstatorresistanceloss.ThepapermainlyintroducesthePMSM'sdevelopmentbackgroundandforeground,workingprinciple,developmenttrend,takingasynchronousstartpermanentmagnetsynchronousmotorasanexample,itintroducesindetailtheelectromagneticdesignofPMSM,thatmainlyincludestherateddataandtechnicalrequirements,maindimensions,permanentmagnetcalculation,rotorandstatorpunching,windingcalculation,magnetcircuitcalculation,parameterscalculation,performancecalculation,calculationofstartingperformance,andalsoliststherevevantexamples.WeaslocananalysetheperformanceofPMSMthroughtheRmxprtmoduleofAnsoftsoftwareandconcludethatthecharacteristiccurveofefficiency,power,torque.Bychangingtwoparametersofthemotor,Igettheoptimalschemeofthemotor.ThroughtransientmoduleofAnsoftsoftwareMaxwell2Dtosimulatethemotorparameters,themagneticfielddistributionofthemotoriscalculated,Icanbeobtainedthecurvesofthecurrentandthetorque,thedistributionofmagneticlineofforceandthedistributionofmagneticfluxdensity.KeywordsPMSM;Motordesign;Performanceanalysis页脚.目录摘要……..............................................................................................................IAbstract...............................................................................................................II第1章绪论........................................................................................................41.1课题背景...................................................................................................41.2永磁电机发展趋势...................................................................................51.3本文研究主要容.......................................................................................6第2章永磁同步电动机的原理........................................................................72.1永磁材料....................................................................................................72.1.1永磁材料的概念和性能....................................................................72.1.2钕铁硼永磁材料................................................................................82.2永磁同步电动机的基本电磁关系............................................................92.2.1转速和气隙磁场有关系数................................................................92.2.2感应电动势和向量图......................................................................102.2.3交直轴电抗及电磁转矩..................................................................122.3小结.........................................................................................................14第3章永磁同步电动机的电磁设计..............................................................153.1永磁同步电机本体设计.........................................................................153.1.1永磁同步电动机的额定数据和主要性能指标..............................153.1.2定子冲片和气隙长度的确定以及定子绕组的设计......................163.1.3转子铁心的设计..............................................................................173.2永磁同步电动机本体设计示例..............................................................193.2.1额定数据及主要尺寸......................................................................193.2.2永磁体及定转子冲片设计..............................................................203.2.3绕组计算..........................................................................................243.2.4磁路计算..........................................................................................273.2.5参数计算..........................................................................................313.2.6工作特性计算..................................................................................343.2.7起动特性计算..................................................................................383.3小结.........................................................................................................42第4章永磁同步电动机的性能分析及磁场分析..........................................434.1永磁同步电动机的性能分析.................................................................434.1.1永磁同步电动机性能曲线..............................................................434.1.2重要参数的变化对性能的影响......................................................454.2永磁同步电动机的磁路分析.................................................................47页脚.4.2.1永磁同步电动机的模型..........