直流串励电机Ansoft的计算求助
各位大侠，大家好：现在小弟遇到了一个难题，我经过了一个星期的琢磨，还是没有头绪。但是现在我有三种方案，但是其中有两种计算的结果是对的，但是有一种方案明显是错误的。希望大家多多帮助。我把这三种方案的计算和设计都传上来给大家看看，希望 大家多多指教。这三种方案分别为ZD701、ZD702、ZD703，但是现在有一个问题，就是701的计算方法不是正确的，701的不同点为我把电机的定子改为了2路并联，这种情况本来就是不正确的，明显的定子绕组为1路的，702就是把他设置为1路时计算的。大那是计算的结果却是701的计算结果更加接近与实际试验情况。这是不知道是什么原因呀？703方案中我把电刷的位置偏移了几度就没有问题了。现在我就纳闷了，这到底是什么问题呢？为什么要偏移电刷的位置呢？要是不偏移电刷为的话电机就可以省下一些铜了，这样做有什么好处吗？希望各位大侠多多帮助？谢谢各位了！第三个方案中我把电刷移了1.8度就可以了，这样做有什么样的好处吗？希望各位大侠多多帮助。谢谢了！ 这是附件 希望高手们多多指教呀；小弟真的是遇到难题了，希望各位帮帮忙呀？谢谢了！ 附件没看见？ 回复 4# zhangyb9453高手，您好：非常细我那个能够得到您的帮助。真的谢谢了！我上几次没有上传成功，也不知道是什么原因？下面是我做的其中一个实例的内容，您看一下吧！帮帮忙吧！
DC MACHINE DESIGN
File: Setup1.res
GENERAL DATA
Machine Type: Motor
Rated Output Power (kW): 7
Rated Voltage (V): 72
Number of Poles: 4
Given Rated Speed (rpm): 2200
Frictional Loss (W): 0
Windage Loss (W): 0
Type of Load: Constant Power
Operating Temperature (C): 80
ROTOR DATA
Outer Diameter of Rotor (mm): 148
Inner Diameter of Rotor (mm): 50
Number of Rotor Slots: 63
Type of Rotor Slot: 3
Rotor Slot
hs0 (mm): 1
hs1 (mm): 1
hs2 (mm): 10
bs0 (mm): 2.7
bs1 (mm): 2.8
bs2 (mm): 2.8
rs (mm): 0.5
Top Tooth Width (mm): 4.38006
Bottom Tooth Width (mm): 3.38314
Skew Width (Number of Slots): 0
Lamination Sectors: 1
Length of Rotor Core (mm): 155
Stacking Factor of Rotor Core: 0.9
Type of Steel: M19_24G
Press Board Thickness (mm): 1.5
Magnetic Press Board: No
Magnetic Shaft: No
Vent Type: Axial Hole
Number of Holes per Row: 0
Number of Banding Slots: 0
ARMATURE WINDING
Type of Armature Winding: Wave
Number of Virtual Slots per Slot: 1
Number of Conductors per Slot: 2
Multiplex Number: 1
Coil Pitch (Virtual Slots): 14
Number of Wires per Conductor: 1
Wire Diameter (mm): 3.53
Wire Wrap Thickness (mm): 0
Number of Parallel Branches: 2
Wedge Thickness (mm): 5.65
Slot Liner Thickness (mm): 0.5
End Clearance (mm): 3
End Length Adjustment (mm): 30
Layer Insulation (mm): 0.5
Coil Half-Turn Length (mm): 426.615
Slot Area (mm^2): 34.7427
Net Slot Area (mm^2): 5.5373
Limited Slot Fill Factor (%): 75
Slot Fill Factor (%): 450.071
**** Warning - Result is Unfeasable ****
STATOR POLE
Frame Outer Diameter (mm): 260
Frame Overall Width (mm): 260
Frame Thickness (mm): 36
Frame Length (mm): 250
Frame Material: steel_1008
Pole Length (mm): 155
Pole Stacking Factor: 0.9
Pole Material: DW360_50
Pole Press Board Thickness (mm): 0
Magnetic Press Board: No
Pole Type: 2
Main Pole Dimensions
Gmin (mm): 0.5
Gmax (mm): 0.5
Bp0 (mm): 80
Bp1 (mm): 80
Rp0 (mm): 1
Rp1 (mm): 1.5
Hp (mm): 5
Bm (mm): 60
Geometric Pole Embrace: 0.721638
Computed Pole Embrace: 0.743148
FIELD WINDING
Pole Insulation (mm): 0
Shoe Insulation (mm): 0
Overall Width (mm): 0
Overall Heigh (mm): 0
Winding Clearance (mm): 5
Winding Insulation (mm): 0
Series Winding Width Ratio: 0.5
Series Winding Type: Round Wire
Series Branches: 1
Series Turns per Pole: 5
Series Wires per Conductor: 10
Series Wire Diameter (mm): 1.8
Series Wire Wrap (mm): 0
Series Coil Half-Turn Length (mm): 233.304
Series Fillet (mm): 5
Series Maximum Width (mm): 13.23
Series Maximum Height (mm): 15.12
Series Minimum Width (mm): 11.34
Series Minimum Height (mm): 13.23
Series Winding Arrangement:
Series maximum layers: 7
Series minimum layers: 6
Series maximum turns per layer: 8
Series minimum turns per layer: 7
Maximum number of turns per pole is: 5
COMMUTATOR & BRUSH DATA
Type of Commutator: Cylinder
Commutator Diameter (mm): 130
Commutator Length (mm): 40
Commutator Insulation (mm): 0.8
Brush Width (mm): 20
Brush Length (mm): 31
Number of Brush Pairs: 2
Brush Displacement: 1.8
Brush Drop (V) 2
Press per Unit Area(g/mm^2): 2
Frictional Coefficient: 0.25
Fan Outer Diameter (mm): 180
Fan Blade Width (mm): 15
MATERIAL CONSUMPTION
Copper Wire Density (kg/m^3): 8900
Armature Core Steel Density (kg/m^3): 7650
Stator Pole Steel Density (kg/m^3): 7650
Stator Frame Steel Density (kg/m^3): 7872
Commutating Pole Steel Density (kg/m^3): 0
Armature Copper Weight (kg): 4.21242
Shunt Copper Weight (kg): 0
Series Copper Weight (kg): 2.11352
Compensating Copper Weight (kg): 0
Commutating Copper Weight (kg): 0
Armature Core Steel Weight (kg): 13.9278
Stator Pole Steel Weight (kg): 5.65528
Stator Frame Steel Weight (kg): 49.8569
Commutating Pole Steel Weight (kg): 0
Total Net Weight (kg): 75.7659
Armature Core Steel Consumption (kg): 24.3327
Stator Pole Steel Consumption (kg): 12.7252
NONSATURATED PARAMETERS
Armature Winding Resistance (ohm): 0.0336527
Armature Winding Resistance at 20C (ohm): 0.0272427
Armature Leakage Inductance (H): 7.54889e-005
Armature Self Inductance (H): 0.0013127
Rotating Voltage Coefficient Gaa (H): -0.000174398
Series Winding Resistance (ohm): 0.00808641
Series Winding Resistance at 20C (ohm): 0.00654614
Series Leakage Inductance (H): 0.000165133
Series Self Inductance (H): 0.00277628
Mutual Inductance Mas (H): -0.000182446
Rotating Voltage Coefficient Gas (H): 0.0026127
NO-LOAD OPERATION
Air-Gap Flux Density Bg0 (Tesla): 0.127147
Rotor-Teeth Flux Density Bt0 (Tesla): 0.271799
Rotor-Yoke Flux Density Bc0 (Tesla): 0.167483
Stator-Pole Flux Density Bm0 (Tesla): 0.20636
Stator-Yoke Flux Density By0 (Tesla): 0.0958331
Air-Gap Ampere Turns ATg0 (A.T): 65.6372
Rotor-Teeth Ampere Turns ATt0 (A.T): 0.458478
Rotor-Yoke Ampere Turns ATc0 (A.T): 0.924809
Stator-Pole Ampere Turns ATm0 (A.T): 0.643844
Stator-Yoke Ampere Turns ATy0 (A.T): 4.64046
Total Ampere Turns AT0 (A.T): 72.3048
Correction Factor for Magnetic
Circuit Length of Rotor Yoke: 0.81959
Correction Factor for Magnetic
Circuit Length of Stator Yoke: 0.829477
No-Load Saturation Factor: 1.10158
No-Load Leakage-Flux Factor: 1.00807
No-Load Input Current (A): 29.1527
No-Load Input Power (W): 2098.99
No-Load Speed (rpm): 9558.16
No-Load Mechanical Loss (W): 1970.58
No-Load Core Loss (W): 24.6064
Other Losses at No-Load (W): 103.805
FULL-LOAD OPERATION
Rated Armature Current (A): 111.951
Rated Input Power (W): 8060.5
Rated Output Power (W): 7000
Efficiency (%): 86.8432
Rated Speed (rpm): 2319.01
Rated Torque (N.m): 28.8249
Armature Copper Loss (W): 421.773
Series Winding Copper Loss (W): 101.348
Brush Voltage Drop Loss (W): 223.903
Mechanical Loss (W): 225.817
Core Loss (W): 51.0923
Additional Loss (W): 36.5674
Total Loss (W): 1060.5
Armature Thermal Load (A^2/mm^3): 96.4324
Specific Electric Loading (A/mm): 15.1691
Armature Current Density (A/mm^2): 6.35718
Series Winding Current Density (A/mm^2): 4.39941
OTHER OPERATION DATA
Locked-Rotor Torque (N.m): 1041.31
Locked-Rotor Current (A): 1677.08
Maximum Output Power (W): 29111
Speed with Max. Output (rpm): 620.3
TRANSIENT FEA INPUT DATA
For Armature Winding:
Number of Turns: 63
Parallel Branches: 2
Terminal Resistance (ohm): 0.0336527
End Leakage Inductance (H): 4.30681e-005
For One Armature Coil:
Number of Turns: 1
Parallel Branches: 1
Terminal Resistance (ohm): 0.00213668
End Leakage Inductance (H): 2.73448e-006
For Series Field Winding:
Number of Turns: 20
Parallel Branches: 1
Terminal Resistance (ohm): 0.00808641
End Leakage Inductance (H): 3.87942e-005
2D Equivalent Value:
Equivalent Model Depth (mm): 155
Equivalent Rotor Stacking Factor: 0.9
Equivalent Pole Stacking Factor: 0.9
Equivalent Frame Stacking Factor: 1.6129
Mechanical Data:
Estimated Rotor Inertia (kg m^2): 0.0569473
Rated Speed (rad/s): 242.846
谢谢了！
期盼得到您的回复 刚邮箱里不知道是什么问题就回复你了，现在我好好考虑一下 这个当电机做为发电机运行时，将电刷顺着旋转方向移一定角度，这样虽然增加了直轴反应，但其有一部分在磁极方向起到增去磁作用，有利地减少了交轴反应电抗，使气隙磁密接近平顶波。我是这样理解的 回复 7# zhangyb9453
高手您好：我发了一封QQ的邮件，希望您看到了能够回复一下，谢谢您了，真的很高兴能够遇到您，谢谢！ 我的maxwell RM 怎么没有励磁绕组参数设定：励磁线径、匝数等呢？ RM中没有以下的设定，不知道是我们原因，请大神帮忙
eries Winding Type: Round Wire
Series Branches: 1
Series Turns per Pole: 5
Series Wires per Conductor: 10
Series Wire Diameter (mm): 1.8
Series Wire Wrap (mm): 0
Series Coil Half-Turn Length (mm): 233.304
Series Fillet (mm): 5
Series Maximum Width (mm): 13.23
Series Maximum Height (mm): 15.12
Series Minimum Width (mm): 11.34
Series Minimum Height (mm): 13.23
Series Winding Arrangement:
Series maximum layers: 7
Series minimum layers: 6
Series maximum turns per layer: 8
Series minimum turns per layer: 7
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