学习学习 电机设计
是高手出招的时候了。
虽不做异步，也很有学习价值呀！
铁心长40mm有困难，我算得差不多100mm了
先学习学习。
本帖最后由 hypo_qu 于 2009-3-16 15:06 编辑
下面是我的计算单：高人点评一下
三相异步电动机设计主要数据
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定子槽数=24. 定子外径=128.00 转子外径= 64.20
转子槽数=28. 定子内径= 65.00 转子内径= 20.50电压=108.0跨距= 104.73
铁心长=40.00 铁心有效长=40.80 并联路数= 1.
线圈伸出长=37.27
定子净铁心长=38.00转子净铁心长=38.00 每相串联导体数= 400.0
定子槽口宽= 2.50 转子槽口宽= 1.00 每槽导体数= 50.
定子槽宽=4.60 转子槽宽= 3.20 绕组层数= 1.
定子槽底半径= 3.50 转子槽宽= 1.62 定子线规1: 2.*.6500
定子槽斜边高=.61 转子槽宽=.00 定子线规2: 0.*.0000
定子槽高= 8.89 转子槽宽=.00 导线面积:.66
定子槽口高=.70 转子槽口高= .20 节距 :10.00(________)
定子齿宽= 4.20 转子槽高1= 1.60
定子绕组伸出铁心直线部分长:10.00
线圈半匝长=180.44
转子上齿宽= 3.37 转子槽高2= 8.60 铜重: 1.34(kg) B25=15400.00
转子下齿宽=.00 转子槽高3=.00 铝重: .15(kg) P10=2.12
定子齿距= 8.51 转子齿距= 7.20 铁重: 4.86(kg) B50=16400.00
定子槽肩斜角度数(角度)= 30.00 定子电阻= 2.3599 P15=5.10
转子槽肩斜角度数(角度)= .00 转子电阻= 3.0807 定子电密=6.21
定子轭部磁路计算最小的高度= 17.80转子导条电密= 5.0713端环电密= 7.4687
转子轭部磁路计算最小的高度= 17.47斜槽度: 1.78 槽绝缘厚度: .20
导线漆膜厚度:.04 .00
定子轭高=18.97 转子轭高= 17.74 定子槽有效面积: 59.64
气隙长度= .40 转子槽形代号= 3. 槽满率:.7526 槽楔厚度:1.50
定子齿下部宽= 4.25 定子齿上部宽= 4.18 转子上齿下部磁密= .00
转子下齿下部磁密=18154.25
定子轭最大磁密=16609.2 转子轭最大磁密=16919.7
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面积 磁 密 磁路长度 单位安匝数 安匝数
定子齿: 1916.4 16376. 10.7 49.22 52.50
定子轭: 720.7 15588. 85.6 28.26 107.29
转子齿: 1790.8 17525. 10.5 96.32 100.84
.0 0. .0 .00
转子轭: 674.2 16662. 19.3 59.00 17.36
气隙: 4165.8 7534. .50 302.13
总匝数： 580.12
有功电流= 2.3148 损耗（标么值） 损耗（实际值）
磁化电流= 2.2413 铜耗: .1603 120.2458
空载电流= 3.6519 铝耗: .1250 93.7600
铁耗: .0403 30.1957
定子轭部磁路校正系数=.443 杂散耗: .0200 15.0000
转子轭部磁路校正系数=.152 机械耗: .0200 15.0000
电抗电流系数=1.0398 总损耗: .3656 274.2015
输入标么值： 1.3656
电流标么值 电流实际值
定子电流 1.7804 4.1212
转子电流 1.3760 130.7259
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磁 密 Cm**3 W/cm^3 损耗
空载定子齿:17788.2 40.9 .055 2.23
空载定子轭:16931.8 246.9 .050 12.31
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效率 功率因数最大起动转矩倍数 起动转矩倍数 起动电流倍数
计算值: .7323 .7670 2.93 2.95 3.95
设计值: .7500 .7500 2.50 2.00 6.00
热负荷= 1503.9080 转差率= .1054 材料成本= 76.02
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型号 :80B 频率 : 50.极数: 2. 绝缘等级 :( 允许温升80k )
功率 : .75 (kw) 绕组接法: 1-- 矽钢片牌号 :DR510
计算 :_____________日期 :2009- 3-16 校核 :_____________日期 :___________
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性能曲线
本帖最后由 hypo_qu 于 2009-3-16 19:55 编辑
RM5计算得到的结果：
Three-Phase Induction Motor Design
File: c:\ansoft\maxwell\maxwell\default\80b.pjt\80b.res
GENERAL DATA
Given Output Power (kW): 0.75
Rated Voltage (V): 108
Winding Connection: Delta
Number of Poles: 2
Given Speed (rpm): 2750
Frequency (Hz): 50
Stray Loss (W): 15
Friction and Wind Loss (W): 10
Type of Load: Constant Power
Iron Core Length (mm): 40
Stacking Factor of Iron Core: 0.95
Type of Steel: DW540-50
Operating Temperature (C): 75
STATOR DATA
Number of Stator Slots: 24
Outer Diameter of Stator (mm): 128
Inner Diameter of Stator (mm): 65
Type of Stator Slot: 2
Dimension of Stator Slot
hs0_stator (mm): 0.7
hs1_stator (mm): 0.7
hs2_stator (mm): 8.8
bs0_stator (mm): 2.5
bs1_stator (mm): 4.6
bs2_stator (mm): 7
Top Tooth Width (mm): 4.275
Bottom Tooth Width (mm): 4.17883
Number of Conductors per Slot: 50
Number of Parallel Branches: 1
Number of Wires per Conductor: 1
Type of Coils: 10
Coil Pitch: 12
Wire Diameter (mm): 0.65
Wire Wrap Thickness (mm): 0.04
Slot Insulation Thickness (mm): 0.2
Top Free Space in Slot (%): 0
Bottom Free Space in Slot (%): 0
Conductor Length Adjustment (mm): 0
ROTOR DATA
Number of Rotor Slots: 28
Air Gap (mm): 0.4
Inner Diameter of Rotor (mm): 20.5
Type of Rotor Slot: 1
Dimension of Rotor Slot
hr0_top (mm): 0.2
hr01_top (mm): 0.2
hr2_top (mm): 7
br0_top (mm): 0.01
br1_top (mm): 3.2
br2_top (mm): 1.62
Cast Rotor: Yes
Half Slot: No
Skew Width: 1.78
End Length of Bar (mm): 0
Height of End Ring (mm): 8
Width of End Ring (mm): 10
Resistivity of Rotor Bar
at 75 Centigrade (ohm.mm^2/m): 0.0434
Resistivity of Rotor Ring
at 75 Centigrade (ohm.mm^2/m): 0.0434
MATERIAL CONSUMPTION
Armature Copper Density (kg/m^3): 8900
Rotor Bar Material Density (kg/m^3): 2700
Rotor Ring Material Density (kg/m^3): 2700
Armature Core Steel Density (kg/m^3): 7750
Rotor Core Steel Density (kg/m^3): 7750
Armature Copper Weight (kg): 0.0678029
Rotor Bar Material Weight (kg): 0.0662916
Rotor Ring Material Weight (kg): 0.07573
Armature Core Steel Weight (kg): 2.28569
Rotor Core Steel Weight (kg): 0.675363
Total Net Weight (kg): 3.17087
Armature Core Steel Consumption (kg): 4.07667
Rotor Core Steel Consumption (kg): 0.977241
RATED-LOAD OPERATION
Stator Resistance (ohm): 5.00453
Stator Leakage Reactance (ohm): 1.95954
Rotor Resistance (ohm): 3.54984
Rotor Leakage Reactance (ohm): 1.92555
Resistance Corresponding to
Iron-Core Loss (ohm): 1179.75
Magnetizing Reactance (ohm): 56.225
Stator Phase Current (A): 3.87489
Current Corresponding to
Iron-Core Loss (A): 0.0739794
Magnetizing Current (A): 1.55228
Rotor Phase Current (A): 3.36561
Copper Loss of Stator Winding (W): 225.426
Copper Loss of Rotor Winding (W): 120.63
Iron-Core Loss (W): 19.3701
Friction & Wind Loss (W): 10
Stray Loss (W): 15
Input Power (W): 1138.58
Output Power (W): 748.157
Mechanical Shaft Torque (N.m): 2.76544
Efficiency (%): 65.7095
Power Factor: 0.894954
Rated Slip: 0.137269
Rated Shaft Speed (rpm): 2588.19
NO-LOAD OPERATION
No-Load Stator Resistance (ohm): 5.00453
No-Load Stator Leakage Reactance (ohm): 1.9605
No-Load Rotor Resistance (ohm): 3.54972
No-Load Rotor Leakage Reactance (ohm): 4.93731
No-Load Stator Phase Current (A): 1.84336
No-Load Iron-Core Loss (W): 27.1986
No-Load Input Power (W): 103.211
No-Load Power Factor: 0.147696
No-Load Slip: 0.00110593
No-Load Shaft Speed (rpm): 2996.68
BREAK-DOWN OPERATION
Break-Down Slip: 0.62
Break-Down Torque (N.m): 4.8291
Break-Down Torque Ratio: 1.74623
Break-Down Phase Current (A): 9.75401
LOCKED-ROTOR OPERATION
Locked-Rotor Torque (N.m): 4.52869
Locked-Rotor Phase Current (A): 11.9199
Locked-Rotor Torque Ratio: 1.6376
Locked-Rotor Current Ratio: 3.07618
Locked-Rotor Stator Resistance (ohm): 5.00453
Locked-Rotor Stator
Leakage Reactance (ohm): 1.95085
Locked-Rotor Rotor Resistance (ohm): 3.55602
Locked-Rotor Rotor
Leakage Reactance (ohm): 1.33122
DETAILED DATA AT RATED OPERATION
Stator Slot Leakage Reactance (ohm): 0.414005
Stator End-Winding Leakage
Reactance (ohm): 1.27151
Stator Differential Leakage
Reactance (ohm): 0.274027
Rotor Slot Leakage Reactance (ohm): 1.07822
Rotor End-Winding Leakage
Reactance (ohm): 0.211589
Rotor Differential Leakage
Reactance (ohm): 0.260386
Skewing Leakage Reactance (ohm): 0.375361
Slot Fill Factor (%): 38.6676
Stator Winding Factor: 0.957662
Stator-Teeth Flux Density (Tesla): 1.6206
Rotor-Teeth Flux Density (Tesla): 1.62373
Stator-Yoke Flux Density (Tesla): 1.44729
Rotor-Yoke Flux Density (Tesla): 1.4191
Air-Gap Flux Density (Tesla): 0.747002
Stator-Teeth Ampere Turns (A.T): 31.3286
Rotor-Teeth Ampere Turns (A.T): 27.3481
Stator-Yoke Ampere Turns (A.T): 28.6215
Rotor-Yoke Ampere Turns (A.T): 2.94865
Air-Gap Ampere Turns (A.T): 299.58
Correction Factor for Magnetic
Circuit Length of Stator Yoke: 0.532633
Correction Factor for Magnetic
Circuit Length of Rotor Yoke: 0.271191
Saturation Factor for Teeth: 1.19586
Saturation Factor for Teeth & Yoke: 1.30125
Induced-Voltage Factor: 0.808121
Stator Current Density (A/mm^2): 11.6773
Specific Electric Loading (A/mm): 22.7708
Stator Thermal Load (A^2/mm^3): 265.902
Rotor Bar Current Density (A/mm^2): 6.30118
Rotor Ring Current Density (A/mm^2): 7.71078
Half-Turn Length of
Stator Winding (mm): 191.32
WINDING ARRANGEMENT
Average coil pitch is: 10
Angle per slot (elec. degrees): 15
Phase-A axis (elec. degrees): 112.5
First slot center (elec. degrees): 0
本帖最后由 hypo_qu 于 2009-3-16 19:55 编辑
两个结果相对比，转速有近300的差距，为什么呢？
那你实际做下来,哪个软件准一点啊?
不错的活动
铁心长=40.00 铁心有效长=40.80？？？？？困惑？
请问铁心叠压系数是多少？
转子不是20槽吗?
不好意思，输错了，是28槽
原来我勾选了half slot,RM的结果我改了，转速还差了100左右，还有热负荷差了很多
的确是个非常好的活动，看的出hypo_qu （听楼上的说是李姐）是个有心人。此活动可以让更多的高手互相交流，共同提高。也可以给我这样的新人们一个实际学习的好机会。感激涕零了！
对这种小电机没怎么接触过，学习中！
前来学习、、{:1_453:}
我也来跟一个，支持美版发帖{:1_439:}
2极电机不光是结构上有特殊考虑，在线圈绕组上设计时也要注意哟，由于2极电机多是对跨，线圈的嵌线以及端部整形等都不是很方便控制的。另外2极电机的机座刚度，轴的挠度，轴承的极限转速等都是值得注意的问题点。
版主，你在RM里面的电阻率设置和上科所的一致不？另外绕组数据的设定好象也不一样吧。这些对RM里面电机的最终计算结果都是会有影响的。你那个RM计算单里面的槽满率，绕组平均半匝长均与上所的差别，尤其是槽满率差好多的。转子导条的电阻率在75度时应该不是0.0434.这些地方对你的电机转速，热负载都会有影响的。
本帖最后由 hypo_qu 于 2009-10-5 14:57 编辑
经LS一提点，猛然发现，原来我将并绕根数2输成了1，yc_face64
Three-Phase Induction Motor Design
File: e:/ansoft/maxwell/maxwell/default/leo80.pjt/leo80.res
GENERAL DATA
Given Output Power (kW): 0.75
Rated Voltage (V): 108
Winding Connection: Delta
Number of Poles: 2
Given Speed (rpm): 2750
Frequency (Hz): 50
Stray Loss (W): 15
Friction and Wind Loss (W): 10
Type of Load: Constant Power
Iron Core Length (mm): 40
Stacking Factor of Iron Core: 0.95
Type of Steel: DR450
Operating Temperature (C): 75
STATOR DATA
Number of Stator Slots: 24
Outer Diameter of Stator (mm): 128
Inner Diameter of Stator (mm): 65
Type of Stator Slot: 2
Dimension of Stator Slot
hs0_stator (mm): 0.7
hs1_stator (mm): 0.7
hs2_stator (mm): 8.8
bs0_stator (mm): 2.5
bs1_stator (mm): 4.6
bs2_stator (mm): 7
Top Tooth Width (mm): 4.275
Bottom Tooth Width (mm): 4.17883
Number of Conductors per Slot: 50
Number of Parallel Branches: 1
Number of Wires per Conductor: 2
Type of Coils: 10
Coil Pitch: 12
Wire Diameter (mm): 0.65
Wire Wrap Thickness (mm): 0.04
Slot Insulation Thickness (mm): 0.2
Top Free Space in Slot (%): 0
Bottom Free Space in Slot (%): 0
Conductor Length Adjustment (mm): 0
ROTOR DATA
Number of Rotor Slots: 28
Air Gap (mm): 0.4
Inner Diameter of Rotor (mm): 20.5
Type of Rotor Slot: 1
Dimension of Rotor Slot
hr0_top (mm): 0.2
hr01_top (mm): 0.2
hr2_top (mm): 7
br0_top (mm): 0.01
br1_top (mm): 3.2
br2_top (mm): 1.62
Cast Rotor: Yes
Half Slot: No
Skew Width: 1.78
End Length of Bar (mm): 0
Height of End Ring (mm): 8
Width of End Ring (mm): 10
Resistivity of Rotor Bar
at 75 Centigrade (ohm.mm^2/m): 0.0434
Resistivity of Rotor Ring
at 75 Centigrade (ohm.mm^2/m): 0.0434
MATERIAL CONSUMPTION
Armature Copper Density (kg/m^3): 8900
Rotor Bar Material Density (kg/m^3): 2700
Rotor Ring Material Density (kg/m^3): 2700
Armature Core Steel Density (kg/m^3): 7700
Rotor Core Steel Density (kg/m^3): 7700
Armature Copper Weight (kg): 0.135606
Rotor Bar Material Weight (kg): 0.0568214
Rotor Ring Material Weight (kg): 0.07573
Armature Core Steel Weight (kg): 2.27094
Rotor Core Steel Weight (kg): 0.696663
Total Net Weight (kg): 3.23576
Armature Core Steel Consumption (kg): 4.05037
Rotor Core Steel Consumption (kg): 0.970937
RATED-LOAD OPERATION
Stator Resistance (ohm): 2.50227
Stator Leakage Reactance (ohm): 1.89344
Rotor Resistance (ohm): 3.85815
Rotor Leakage Reactance (ohm): 1.96079
Resistance Corresponding to
Iron-Core Loss (ohm): 1085.86
Magnetizing Reactance (ohm): 42.6969
Stator Phase Current (A): 3.94425
Current Corresponding to
Iron-Core Loss (A): 0.0880638
Magnetizing Current (A): 2.23962
Rotor Phase Current (A): 3.02657
Copper Loss of Stator Winding (W): 116.784
Copper Loss of Rotor Winding (W): 106.024
Iron-Core Loss (W): 25.2632
Friction & Wind Loss (W): 10
Stray Loss (W): 15
Input Power (W): 1023.62
Output Power (W): 750.546
Mechanical Shaft Torque (N.m): 2.72655
Efficiency (%): 73.3229
Power Factor: 0.789254
Rated Slip: 0.122348
Rated Shaft Speed (rpm): 2632.95
NO-LOAD OPERATION
No-Load Stator Resistance (ohm): 2.50227
No-Load Stator Leakage Reactance (ohm): 1.89411
No-Load Rotor Resistance (ohm): 3.85805
No-Load Rotor Leakage Reactance (ohm): 3.97021
No-Load Stator Phase Current (A): 2.41478
No-Load Iron-Core Loss (W): 29.2869
No-Load Input Power (W): 98.0936
No-Load Power Factor: 0.106205
No-Load Slip: 0.00121721
No-Load Shaft Speed (rpm): 2996.35
BREAK-DOWN OPERATION
Break-Down Slip: 1
Break-Down Torque (N.m): 8.11473
Break-Down Torque Ratio: 2.97619
Break-Down Phase Current (A): 15.4161
LOCKED-ROTOR OPERATION
Locked-Rotor Torque (N.m): 8.11473
Locked-Rotor Phase Current (A): 15.4161
Locked-Rotor Torque Ratio: 2.97619
Locked-Rotor Current Ratio: 3.90849
Locked-Rotor Stator Resistance (ohm): 2.50227
Locked-Rotor Stator
Leakage Reactance (ohm): 1.87334
Locked-Rotor Rotor Resistance (ohm): 3.86519
Locked-Rotor Rotor
Leakage Reactance (ohm): 1.29179
DETAILED DATA AT RATED OPERATION
Stator Slot Leakage Reactance (ohm): 0.413918
Stator End-Winding Leakage
Reactance (ohm): 1.27151
Stator Differential Leakage
Reactance (ohm): 0.208009
Rotor Slot Leakage Reactance (ohm): 1.08831
Rotor End-Winding Leakage
Reactance (ohm): 0.212933
Rotor Differential Leakage
Reactance (ohm): 0.270574
Skewing Leakage Reactance (ohm): 0.388945
Slot Fill Factor (%): 77.3352
Stator Winding Factor: 0.957662
Stator-Teeth Flux Density (Tesla): 1.73906
Rotor-Teeth Flux Density (Tesla): 1.60447
Stator-Yoke Flux Density (Tesla): 1.59326
Rotor-Yoke Flux Density (Tesla): 1.56224
Air-Gap Flux Density (Tesla): 0.801606
Stator-Teeth Ampere Turns (A.T): 64.6528
Rotor-Teeth Ampere Turns (A.T): 31.4035
Stator-Yoke Ampere Turns (A.T): 123.761
Rotor-Yoke Ampere Turns (A.T): 9.5678
Air-Gap Ampere Turns (A.T): 321.478
Correction Factor for Magnetic
Circuit Length of Stator Yoke: 0.429453
Correction Factor for Magnetic
Circuit Length of Rotor Yoke: 0.175962
Saturation Factor for Teeth: 1.2988
Saturation Factor for Teeth & Yoke: 1.71353
Induced-Voltage Factor: 0.885413
Stator Current Density (A/mm^2): 5.94317
Specific Electric Loading (A/mm): 23.1784
Stator Thermal Load (A^2/mm^3): 137.753
Rotor Bar Current Density (A/mm^2): 6.61083
Rotor Ring Current Density (A/mm^2): 6.9393
Half-Turn Length of
Stator Winding (mm): 191.32
WINDING ARRANGEMENT
Average coil pitch is: 10
Angle per slot (elec. degrees): 15
Phase-A axis (elec. degrees): 112.5
First slot center (elec. degrees): 0
本帖最后由 dream-ttt 于 2009-3-19 08:45 编辑
现在都不提倡加分了吗？打击积极性哟{:1_426:}{:aa1
以后这样的讨论少参加点哦，潜水好了
