三相笼型感应电动机电磁设计

1、 三相笼型感应电动机设计及仿真 学 院： 姓 名： 学 号： 指 导 老 师： 日 期： 一 课程设计内容：1 在查阅有关资料的基础上，确定电机主要尺寸、槽配合，定、转子槽形及槽形尺寸。2 确定定、转子绕组方案。3 完成电机电磁设计计算方案。4 画出定、转子冲片图。5完成说明书（16开，计算机打印或课程设计纸手写，计算机打印需提供纸质计算原稿）6.对已经完成的电磁设计方案建立有限元模型，利用ANSOFT软件进行运行性能的仿真计算，给出性能分析图表等。二 设计基本要求：1求每位同学独立完成一种型号规格电机的全部电磁方案计算过程，并根据所算结果绘出定、转子冲片图。2要求计算准确，绘出图形正确、整洁

2、。3要求学生在设计过程中能正确查阅有关资料、图表及公式。 题目2：Y132M2-6 额定数据与性能指标1、电机型号Y132M2-6 2、额定功率 PN=5.5kW3、额定频率fN =50Hz 4、额定电压及接法UN=380 伏 1-5、极数 2p=6 6、绝缘等级 B7、力能指标：效率 8、功率因数9、最大转矩倍数起动性能：起动电流倍数,起动转矩倍数主要尺寸转子外径定子槽形采用斜肩圆底梨形槽：转子采用斜肩平底槽：三 概述三相异步电机广泛应用于采矿、机械、冶金、油田等领域。三相异步电机在工业中起着重要的作用。与其他机器相比,它具有成本低、结构简单、易于制造等优点。但它也有一些缺点,比如小的起动转

3、矩,表现不佳的速度控制在轻载和低功率因数。Ansoft 作为世界领先的电磁有限元分析软件， Maxwell 已广泛应于电气设备行业，RMxprt作为Ansoft最重要的一个模块，广泛应用在工程电磁场，它可以优化前期项目的设计。然后我们可以生成一个合理的2 d / 3 d有限元分析模型。可自动加载几何和自动定义的各个部分材料,给电动机的边界条件时,励磁电源等等。在本设计报告中,我们利用Ansoft Maxwell 进行建模。详细分析步骤和过程，根据给定的设计参数结合上课所学习的知识，在Ansoft Maxwell 14中进行仿真和计算，来验证电机设计的合理性。四 设计分析根据给定的设计数据，经过

4、一系列的计算，为后续进行仿真设计打下了基础，三相异步电动机电机设计是个复杂的过程，需要考虑的因素、确定的尺寸和数据很多。与单相异步电动机相比，三相异步电动机运行性能好，并可节省各种材料。根据转子结构分类，可分为笼式和绕线式，本设计选择的是笼型感应电动机设计，其转子的异步电动机结构简单、运行可靠、重量轻、价格便宜，得到了广泛的应用，其主要缺点是调速困难。三相感应电动机作电动机运行时，转子的转速低于旋转磁场的转速，转子绕组因与磁场间存在着相对运动而感生电动势和电流，并与磁场相互作用产生电磁转矩，实现能量变换。电磁设计主要的内容是确定电机的电磁负荷及定子两套绕组的极对数。仿真设计时需注意以下几点：(

5、1) 负载的性质明确负载需要恒功率调速或恒转矩调速，或在整个调速范围内部分转速区为恒功率、部分转速区为恒转矩。(2) 调速范围确定电机的常用转速区间和最大转速区间，以便选择合适的电机数据(3) 通风冷却系统在设计时应兼顾电机各方面性能的要求，根据不同的情况采取不同的方法，整个电磁计算中的几个主要部分包括：主要尺寸与气隙的确定；定转子绕组与冲片设计；工作性能的计算；起动性能的计算等。五 仿真设计 双击桌面的Maxwell 16.0，运行Maxwell 软件，进入如下界面，点击菜单栏中的，新建电机设计图1 新建电机设计点击machine，设置电机参数如下图2 设置电机参数设置定子slot参数如下:

6、图3 定子槽型和参数双击图中Stator 下的Slot，设置定子槽型参数图4定子槽型参数双击图中Stator 下的Winding，设置定子绕组图5 定子绕组和参数设置双击图中Rotor设置转子参数图6 转子槽型和参数双击图中Rotor下的Slot设置转子槽型数据图7 转子槽型数据双击图中Rotor下的Winding设置转子绕组图8转子绕组设置 图9 定、转子冲片至此电机参数设置完毕选择菜单栏中的RMxprtAnalysisSteupAdd Solution Setup设置求解器参数图10 求解器参数设置求解器设置完毕，开始运行仿真，点击工具栏中的运行Validate图11 点击仿真所有参数均设

7、置正确，可以运行仿真，点击工具栏中的，运行Analyze All等待运行结束，查看仿真结果,如图12.1-12.3所示：选择菜单栏中RMxprtResults Solution DataPerformance图12.1 查看运行结果图12.2 Design sheets图12.3 Curves (运行特性曲线)后处理，将RMxprt项目导入到Maxwell 2D 图13 生成Maxwell 2D项目 图14 生成3D项目六 仿真结果 Three-Phase Induction Motor Design File: Setup1.res GENERAL DATA Given Output Pow

8、er (kW):5.5Rated Voltage (V):380Winding Connection:WyeNumber of Poles:6Given Speed (rpm):1462Frequency (Hz):50Stray Loss (W):71.775 Frictional Loss (W):131.076 Windage Loss (W):30.751 Type of Load:Constant SpeedOperating Temperature (C):75 STATOR DATA Number of Stator Slots:36Outer Diameter of Stato

9、r (mm): 210Inner Diameter of Stator (mm): 148Type of Stator Slot:2Stator Slot hs0 (mm): 0.8 hs1 (mm): 0.952 hs2 (mm): 10.548 bs0 (mm): 3.5 bs1 (mm): 6.8 bs2 (mm): 8.8Top Tooth Width (mm): 6.42671Bottom Tooth Width (mm): 6.27296Length of Stator Core (mm): 140Stacking Factor of Stator Core:0.95Type of

10、 Steel:steel_1008Number of lamination sectors1Press board thickness (mm): 0Magnetic press boardNoNumber of Parallel Branches:1Type of Coils:11Coil Pitch:0Number of Conductors per Slot:19Number of Wires per Conductor:4Wire Diameter (mm):0.86Wire Wrap Thickness (mm):0.06Wedge Thickness (mm):0Slot Line

11、r Thickness (mm):0Layer Insulation (mm):0Slot Area (mm2):120.388Net Slot Area (mm2):112.685Slot Fill Factor (%):57.0852Limited Slot Fill Factor (%):75Wire Resistivity (ohm.mm2/m):0.0217Top Free Space in Slot (%):0Bottom Free Space in Slot (%):0Conductor Length Adjustment (mm): 0End Length Correction

12、 Factor1End Leakage Reactance Correction Factor1 ROTOR DATA Number of Rotor Slots:33Air Gap (mm): 0.35Inner Diameter of Rotor (mm): 48Type of Rotor Slot:3Rotor Slot hs0 (mm): 1 hs1 (mm): 1.58 hs2 (mm): 18.42 bs0 (mm): 1 bs1 (mm): 6.5 bs2 (mm): 2.6 rs (mm): 0Cast Rotor:YesHalf Slot:NoLength of Rotor

13、(mm): 140Stacking Factor of Rotor Core:0.95Type of Steel:steel_1008Skew Width:1End Length of Bar (mm): 0Height of End Ring (mm): 31Width of End Ring (mm): 13.5Resistivity of Rotor Bar at 75 Centigrade (ohm.mm2/m):0.15873Resistivity of Rotor Ring at 75 Centigrade (ohm.mm2/m):0.15873Magnetic Shaft:No

14、MATERIAL CONSUMPTIONArmature Copper Density (kg/m3): 8900Rotor Bar Material Density (kg/m3): 2700Rotor Ring Material Density (kg/m3): 2700Armature Core Steel Density (kg/m3): 7872Rotor Core Steel Density (kg/m3): 7872Armature Copper Weight (kg): 3.37533Rotor Bar Material Weight (kg): 1.13184Rotor Ri

15、ng Material Weight (kg): 0.811494Armature Core Steel Weight (kg): 13.7141Rotor Core Steel Weight (kg): 12.812Total Net Weight (kg): 31.8447Armature Core Steel Consumption (kg): 29.4887Rotor Core Steel Consumption (kg): 18.0115 RATED-LOAD OPERATION Stator Resistance (ohm):0.508125Stator Resistance at

16、 20C (ohm):0.417974Stator Leakage Reactance (ohm):0.324881Rotor Resistance (ohm):1.24075Rotor Resistance at 20C (ohm):1.02061Rotor Leakage Reactance (ohm):0.396957Resistance Corresponding to Iron-Core Loss (ohm):1.52666e+007Magnetizing Reactance (ohm):1.80947Stator Phase Current (A):141.362Current C

17、orresponding to Iron-Core Loss (A):1.30867e-005Magnetizing Current (A):110.413Rotor Phase Current (A):73.5934Copper Loss of Stator Winding (W):30462.1Copper Loss of Rotor Winding (W):20159.6Iron-Core Loss (W):0.00784373Frictional and Windage Loss (W):161.827Stray Loss (W):71.775Total Loss (W):50855.

18、3Input Mechanical Power (kW):63.9569Output Electrical Power (kW):13.1016Mechanical Shaft Torque (N.m):417.745Efficiency (%):20.4851Power Factor:0.141586Rated Slip:-0.462Rated Shaft Speed (rpm):1462Operation mode: generator NO-LOAD OPERATION No-Load Stator Resistance (ohm):0.508125No-Load Stator Leak

19、age Reactance (ohm):0.329726No-Load Rotor Resistance (ohm):1.23865No-Load Rotor Leakage Reactance (ohm):0.409937No-Load Stator Phase Current (A):99.7474No-Load Iron-Core Loss (W):0.00640152No-Load Input Power (W):15338.4No-Load Power Factor:0.23254No-Load Slip:0.00126475No-Load Shaft Speed (rpm):998

20、.735 BREAK-DOWN OPERATION Break-Down Slip:1Break-Down Torque (N.m):375.794Break-Down Torque Ratio:0.899577Break-Down Phase Current (A):143.733 LOCKED-ROTOR OPERATION Locked-Rotor Torque (N.m):375.794Locked-Rotor Phase Current (A):143.733Locked-Rotor Torque Ratio:-0.899577Locked-Rotor Current Ratio:1

21、.01677Locked-Rotor Stator Resistance (ohm):0.508125Locked-Rotor Stator Leakage Reactance (ohm):0.324738Locked-Rotor Rotor Resistance (ohm):1.24844Locked-Rotor Rotor Leakage Reactance (ohm):0.396071 DETAILED DATA AT RATED OPERATION Stator Slot Leakage Reactance (ohm):0.226211Stator End-Winding Leakag

22、e Reactance (ohm):0.0912937Stator Differential Leakage Reactance (ohm):0.00737612Rotor Slot Leakage Reactance (ohm):0.339147Rotor End-Winding Leakage Reactance (ohm):0.033844Rotor Differential Leakage Reactance (ohm):0.016482Skewing Leakage Reactance (ohm):0.00748217Stator Winding Factor:0.965926Sta

23、tor-Teeth Flux Density (Tesla):2.44751Rotor-Teeth Flux Density (Tesla):2.34519Stator-Yoke Flux Density (Tesla):2.14273Rotor-Yoke Flux Density (Tesla):1.17919Air-Gap Flux Density (Tesla):1.14309Stator-Teeth Ampere Turns (A.T):1678.68Rotor-Teeth Ampere Turns (A.T):2591.97Stator-Yoke Ampere Turns (A.T)

24、:647.83Rotor-Yoke Ampere Turns (A.T):7.84111Air-Gap Ampere Turns (A.T):427.765Correction Factor for Magnetic Circuit Length of Stator Yoke:0.1915Correction Factor for Magnetic Circuit Length of Rotor Yoke:0.7Saturation Factor for Teeth:10.9836Saturation Factor for Teeth & Yoke:12.5164Induced-Voltage

25、 Factor:0.910647Stator Current Density (A/mm2):60.8397Specific Electric Loading (A/mm):207.959Stator Thermal Load (A2/mm3):12652.2Rotor Bar Current Density (A/mm2):16.2385Rotor Ring Current Density (A/mm2):6.24831Half-Turn Length of Stator Winding (mm): 238.629 WINDING ARRANGEMENTThe 3-phase, 1-laye

26、r winding can be arranged in 12 slots as below:AAZZBBXXCCYYAngle per slot (elec. degrees):30Phase-A axis (elec. degrees):105First slot center (elec. degrees):0 TRANSIENT FEA INPUT DATA For one phase of the Stator Winding: Number of Turns:114 Parallel Branches:1 Terminal Resistance (ohm):0.508125 End Leakage Inductance (H):0.000290597For Rotor End Ring Between Two Bars of One Side: Equivalent Ring Resistance (ohm):4.12711e-006 Equivalent Ring Inductance (H):6.56283e-0092D Equivalent Value: Equivalent Model Depth (mm):1