基于Ansoft RMxprt的三相异步电机设计分析

第2讲基于AnsoftRMxprt的三相异步电机设计分析——电机的磁路设计法RMxprtTM是旋转电机专业设计软件，能快速计算各种电机（感应电机、同步电机、电子或机械换向电机等）的性能指标。RMxprtTM还能快速地对成百上千种设计方案进行评估，并可对预选方案进行设计优化，优化设计后的方案可根据模型的对称性，自动生成合理的二维/三维电磁场有限元分析模型。RMxprtTM为工程人员在产品设计过程中及时地评估和平衡设计方案提供了有效工具。RMxprtTMRMxprt概述随着电机应用领域的不断拓展，工程设计人员在产品小型化、高效率以及高性能方面面临越来越多的挑战。RMxprtTM帮助电机制造者，在设计过程的初始阶段制定成百上千种方案，同时对其性能进行评估，从中优选出最佳、合理的设计方案。RMxprt概述具有Windows风格的桌面环境，采用专业的、模版化电机设计界面，RMxprtTM运用经典电机分析理论快速、准确地求解电机的转矩－转速特性、损耗、气隙磁通、以及效率等重要特性曲线及参数。集成的参数化分析和优化设计功能使它成为快捷、高效的电机设计专用工具。RMxprt概述RMxprtTM与Ansoft的Maxwell集成在同一设计环境中，设计者可单独使用RMxprtTM，也可将其优选出的设计方案自动生成二维/三维有限元分析模型，用Maxwell对电机进行更精确的电磁场分析设计,实现电机解析-有限元自动设计流程。特点-Windows风格介面，模版化参数输入:工作条件,几何尺寸,材料特性等-基于经典的电机分析理论和等效磁路法的快速解析分析-提供美国、中国材料库和公制、英制单位-自动排列多种绕组型式或用户自定义任意绕组连接方式-无刷电机、开关磁阻电机和永磁同步电动机的驱动线路类型、控制方式及开关管参数可设定-直流电机详细的换向器和电刷参数可设定-输入数据自动验证功能特点-提供丰富的预设计电机模型库-自动设计功能:槽形尺寸、线圈匝数、线规、起动电容等-求解时考虑材料非线性Ｂ–Ｈ特性、三维斜槽和端部效应-参数化和优化设计功能：-尺寸等参数无需指定，可用一定变化范围的变量表示-数据、图形、自定义结果输出模式-多种负载种类三相异步电机RMxprt设计（1）项目建立三相异步电机RMxprt设计（2）模型建立或双击项目管理树对应项，在屏幕上弹出“Properties”窗口，输入模型数据后，点击“确定”退出。定子数据输入RelativePermeability:相对磁导率simple:导磁性能各向同性且BH关系为线性；Value值为1Anisotropic:导磁性能各向异性材料需要输入三个方向的导磁性能X:T(1,1)Y:T(2,2)Z:T(3,3)Nonlinear:导磁性能非线性BulkConductivity:电导率类型：Simple:各向同性Anisotropic:各向异性MagneticCoercivity:磁矫顽力CoreLossType:铁芯损耗类型ElectricalSteel:电工钢片PowerFerrite:功率铁氧体定子槽形定子绕组定子绕组端部数据和绝缘数据定子绕组类型转子数据转子槽类型转子槽形数据转子铸铝绕组轴材料设定(磁性、非磁性)仿真设置求解异步电机结果查看设计单Three-PhaseInductionMotorDesignFile:Setup1.resGENERALDATAGivenOutputPower(kW):11RatedVoltage(V):380WindingConnection:DeltaNumberofPoles:4GivenSpeed(rpm):1460Frequency(Hz):50StrayLoss(W):110FrictionalLoss(W):102WindageLoss(W):0TypeofLoad:ConstantTorqueOperatingTemperature(C):75STATORDATANumberofStatorSlots:36OuterDiameterofStator(mm):260InnerDiameterofStator(mm):170TypeofStatorSlot:2DimensionofStatorSloths0(mm):0.8hs1(mm):0.975hs2(mm):15.83bs0(mm):3.8bs1(mm):7.28bs2(mm):10.05TopToothWidth(mm):7.86988BottomToothWidth(mm):7.86977STATORDATALengthofStatorCore(mm):155StackingFactorofStatorCore:0.98TypeofSteel:50DW470Numberoflaminationsectors0Pressboardthickness(mm):0MagneticpressboardNoNumberofParallelBranches:1TypeofCoils:11CoilPitch:5NumberofConductorsperSlot:29NumberofWiresperConductor:2WireDiameter(mm):1.291WireWrapThickness(mm):0.04STATORDATAWedgeThickness(mm):2SlotLinerThickness(mm):0.3LayerInsulation(mm):0SlotArea(mm^2):185.272NetSlotArea(mm^2):151.148SlotFillFactor(%):67.98LimitedSlotFillFactor(%):75WireResistivity(ohm.mm^2/m):0.0217TopFreeSpaceinSlot(%):0BottomFreeSpaceinSlot(%):0ConductorLengthAdjustment(mm):0EndLengthCorrectionFactor1EndLeakageReactanceCorrectionFactor1ROTORDATANumberofRotorSlots:26AirGap(mm):0.5InnerDiameterofRotor(mm):60TypeofRotorSlot:2DimensionofRotorSloths0(mm):0.5hs1(mm):0.95hs2(mm):25bs0(mm):1bs1(mm):4.8bs2(mm):4.8CastRotor:YesHalfSlot:NoROTORDATALengthofRotor(mm):155StackingFactorofRotorCore:0.98TypeofSteel:50DW470SkewWidth:1EndLengthofBar(mm):0HeightofEndRing(mm):28.5WidthofEndRing(mm):15ResistivityofRotorBarat75Centigrade(ohm.mm^2/m):0.0263158ResistivityofRotorRingat75Centigrade(ohm.mm^2/m):0.0263158MagneticShaft:NoMATERIALCONSUMPTIONArmatureCopperDensity(kg/m^3):8900RotorBarMaterialDensity(kg/m^3):2689RotorRingMaterialDensity(kg/m^3):2689ArmatureCoreSteelDensity(kg/m^3):7800RotorCoreSteelDensity(kg/m^3):7800ArmatureCopperWeight(kg):7.80991RotorBarMaterialWeight(kg):1.43372RotorRingMaterialWeight(kg):1.00758ArmatureCoreSteelWeight(kg):28.11RotorCoreSteelWeight(kg):19.152TotalNetWeight(kg):57.5132ArmatureCoreSteelConsumption(kg):55.0598RotorCoreSteelConsumption(kg):26.8931RATED-LOADOPERATIONStatorResistance(ohm):0.926082StatorResistanceat20C(ohm):0.761777StatorLeakageReactance(ohm):2.11611RotorResistance(ohm):0.530839RotorResistanceat20C(ohm):0.436658RotorLeakageReactance(ohm):5.4719ResistanceCorrespondingtoIron-CoreLoss(ohm):1918.47MagnetizingReactance(ohm):99.6363StatorPhaseCurrent(A):12.0556CurrentCorrespondingtoIron-CoreLoss(A):0.186727MagnetizingCurrent(A):3.59539RotorPhaseCurrent(A):10.7566RATED-LOADOPERATIONCopperLossofStatorWinding(W):403.784CopperLossofRotorWinding(W):184.262Iron-CoreLoss(W):200.675FrictionalandWindageLoss(W):103.101StrayLoss(W):110TotalLoss(W):1001.82InputPower(kW):12.1174OutputPower(kW):11.1156MechanicalShaftTorque(N.m):71.9265Efficiency(%):91.7324PowerFactor:0.873688RatedSlip:0.0161591RatedShaftSpeed(rpm):1475.76NO-LOADOPERATIONNo-LoadStatorResistance(ohm):0.926082No-LoadStatorLeakageReactance(ohm):2.1167No-LoadRotorResistance(ohm):0.530608No-LoadRotorLeakageReactance(ohm):5.47774No-LoadStatorPhaseCurrent(A):3.74302No-LoadIron-CoreLoss(W):216.191No-LoadInputPower(W):469.962No-LoadPowerFactor:0.0843587No-LoadSlip:0.000134133No-LoadShaftSpeed(rpm):1499.8BREAK-DOWNOPERATIONBreak-DownSlip:0.07Break-DownTorque(N.m):155.229Break-DownTorqueRatio:2.15816Break-DownPhaseCurrent(A):34.6863LOCKED-ROTOROPERATIONLocked-RotorTorque(N.m):51.8262Locked-RotorPhaseCurrent(A):53.1066Locked-RotorTorqueRatio:0.720545Locked-RotorCurrentRatio:4.40514Locked-RotorStatorResistance(ohm):0.926082Locke