Ansoft EM专题讨论（二）——三相异步电机设计

8023jing · 发表于 2015-12-18 15:49

你好，楼主。我的为什么RMXprt生成的2Dmaxwell的额定转速才1440r/min呢？我在RXMprt里面设置了1460转呀？
而且每次用RXMprt 一键生成2Dmaxwell时会有一个警告提醒，

8023jing · 发表于 2015-12-18 15:52

警告是the maxwell don't contain any variable assignments from RXMprt design.

knight1985mxl · 发表于 2016-1-4 13:13

hypo_qu 发表于 2009-1-13 20:57
43# pilixia

rm中得到的转矩-转速曲线是稳态时的

楼主你好，首先非常感谢您与我们分享这么好的帖子。在这里我有个基础问题想求证，在路算是我看到你的Conductors per slot设置为70，请问这个70是怎么得来的？为什么70匝就正好能适合这个电机的额定点呢？

knight1985mxl · 发表于 2016-1-4 13:13

楼主你好，首先非常感谢您与我们分享这么好的帖子。在这里我有个基础问题想求证，在路算是我看到你的Conductors per slot设置为70，请问这个70是怎么得来的？为什么70匝就正好能适合这个电机的额定点呢？

tinyrain_nau · 发表于 2016-1-8 08:20

电机好复杂，有点难学

baohuijx · 发表于 2016-1-14 14:28

上科所计算与ansys maxwell v15在计算交流电机转子槽形为刀形槽时差别很大

baohuijx · 发表于 2016-1-14 14:29

在用rmxprt5.0计算时差异较小

baohuijx · 发表于 2016-1-14 14:35

Y112计算的图片，11111

baohuijx · 发表于 2016-1-14 14:37

Three-Phase Induction Machine Design

                  File: Setup1.res

   GENERAL DATA

Given Output Power (kW): 4
Rated Voltage (V): 380
Winding Connection: Delta
Number of Poles: 2
Given Speed (rpm): 2950
Frequency (Hz): 50
Stray Loss (W): 40
Frictional Loss (W): 49.1667
Windage Loss (W): 95.0829
Operation Mode: Motor
Type of Load: Constant Power
Operating Temperature (C): 75

   STATOR DATA

Number of Stator Slots: 30
Outer Diameter of Stator (mm):    175
Inner Diameter of Stator (mm):    98
Type of Stator Slot: 2
Stator Slot
         hs0 (mm):    0.8
         hs1 (mm):    0.84
         hs2 (mm):    9.76
         bs0 (mm):    3.2
         bs1 (mm):    6.1
         bs2 (mm):    8.1
Top Tooth Width (mm):    4.5146
Bottom Tooth Width (mm):    4.56595

Length of Stator Core (mm):    105
Stacking Factor of Stator Core: 0.97
Type of Steel: DW465_50
Number of lamination sectors 0
Press board thickness (mm):    0
Magnetic press board No
Number of Parallel Branches: 1
Type of Coils: 11
Coil Pitch: 13
Number of Conductors per Slot: 48
Number of Wires per Conductor: 1
Wire Diameter (mm): 1.06
Wire Wrap Thickness (mm): 0.05

Wedge Thickness (mm): 2
Slot Liner Thickness (mm): 0.2
Layer Insulation (mm): 0
Slot Area (mm^2): 101.527
Net Slot Area (mm^2): 79.3093

Slot Fill Factor (%): 74.5698
Limited Slot Fill Factor (%): 75
Wire Resistivity (ohm.mm^2/m): 0.0217
Conductor Length Adjustment (mm):    10
End Length Correction Factor 1
End Leakage Reactance Correction Factor 1

   ROTOR DATA

Number of Rotor Slots: 26
Air Gap (mm):    0.4
Inner Diameter of Rotor (mm):    38
Type of Rotor Slot: Edited
Left Slot Part
         Type Info (mm)
         1    End Width: 1.5
                  Line Edge: 0
         2    Height: 4.5
                  End Width: 3
         1    End Width: 5.5
                  Line Edge: 0
         2    Height: 14
                  End Width: 2
         1    End Width: 0
                  Line Edge: 0

Cast Rotor: No
Half Slot: No

Length of Rotor (mm):    105
Stacking Factor of Rotor Core: 0.95
Type of Steel: DW465_50
Skew Width: 1
End Length of Bar (mm):    0
Height of End Ring (mm):    20
Width of End Ring (mm):    15
Resistivity of Rotor Bar
  at 75 Centigrade (ohm.mm^2/m): 0.0263158
Resistivity of Rotor Ring
  at 75 Centigrade (ohm.mm^2/m): 0.0263158
Magnetic Shaft: No

   MATERIAL CONSUMPTION

Armature Copper Density (kg/m^3):    8900
Rotor Bar Material Density (kg/m^3):    2689
Rotor Ring Material Density (kg/m^3):    2689
Armature Core Steel Density (kg/m^3):    7700
Rotor Core Steel Density (kg/m^3):    7700

Armature Copper Weight (kg):    3.59353
Rotor Bar Material Weight (kg):    0.459728
Rotor Ring Material Weight (kg):    0.391299
Armature Core Steel Weight (kg):    10.5591
Rotor Core Steel Weight (kg):    3.57766
Total Net Weight (kg):    18.5813

Armature Core Steel Consumption (kg):    24.848
Rotor Core Steel Consumption (kg):    7.7115

   RATED-LOAD OPERATION

Stator Resistance (ohm): 3.7503
Stator Resistance at 20C (ohm): 3.08492
Stator Leakage Reactance (ohm): 4.20355
Rotor Resistance (ohm): 1.78089
Rotor Leakage Reactance (ohm): 3.08593
Resistance Corresponding to
  Iron-Core Loss (ohm): 5766.4
Magnetizing Reactance (ohm): 50.1206

Stator Phase Current (A): 8.07325
Current Corresponding to
  Iron-Core Loss (A): 0.0581131
Magnetizing Current (A): 6.68593
Rotor Phase Current (A): 4.218

Copper Loss of Stator Winding (W): 733.304
Copper Loss of Rotor Winding (W): 95.0542
Iron-Core Loss (W): 58.4217
Frictional and Windage Loss (W): 142.298
Stray Loss (W): 40
Total Loss (W): 1069.08
Input Power (kW): 5.06892
Output Power (kW): 3.99985

Mechanical Shaft Torque (N.m): 13.0241
Efficiency (%): 78.9092
Power Factor: 0.546414
Rated Slip: 0.0224333
Rated Shaft Speed (rpm): 2932.7

   NO-LOAD OPERATION

No-Load Stator Resistance (ohm): 3.7503
No-Load Stator Leakage Reactance (ohm): 4.20528
No-Load Rotor Resistance (ohm): 1.78077
No-Load Rotor Leakage Reactance (ohm): 3.08693

No-Load Stator Phase Current (A): 6.96843
No-Load Iron-Core Loss (W): 63.4057
No-Load Input Power (W): 799.297
No-Load Power Factor: 0.095581
No-Load Slip: 0.000728424
No-Load Shaft Speed (rpm): 2997.81

   BREAK-DOWN OPERATION

Break-Down Slip: 0.24
Break-Down Torque (N.m): 54.0777
Break-Down Torque Ratio: 4.15213
Break-Down Phase Current (A): 29.5466

   LOCKED-ROTOR OPERATION

Locked-Rotor Torque (N.m): 32.5874
Locked-Rotor Phase Current (A): 43.6483
Locked-Rotor Torque Ratio: 2.50209
Locked-Rotor Current Ratio: 5.40653

Locked-Rotor Stator Resistance (ohm): 3.7503
Locked-Rotor Stator
  Leakage Reactance (ohm): 3.9705
Locked-Rotor Rotor Resistance (ohm): 2.01224
Locked-Rotor Rotor
  Leakage Reactance (ohm): 2.81862

   DETAILED DATA AT RATED OPERATION

Stator Slot Leakage Reactance (ohm): 1.16936
Stator End-Winding Leakage
  Reactance (ohm): 2.84553
Stator Differential Leakage
  Reactance (ohm): 0.188661
Rotor Slot Leakage Reactance (ohm): 2.41794
Rotor End-Winding Leakage
  Reactance (ohm): 0.282279
Rotor Differential Leakage
  Reactance (ohm): 0.26502
Skewing Leakage Reactance (ohm): 0.120688

Stator Winding Factor: 0.956677

Stator-Teeth Flux Density (Tesla): 1.47673
Rotor-Teeth Flux Density (Tesla): 1.38505
Stator-Yoke Flux Density (Tesla): 1.33371
Rotor-Yoke Flux Density (Tesla): 2.97005
Air-Gap Flux Density (Tesla): 0.633719

Stator-Teeth Ampere Turns (A.T): 9.94609
Rotor-Teeth Ampere Turns (A.T): 7.28814
Stator-Yoke Ampere Turns (A.T): 20.8996
Rotor-Yoke Ampere Turns (A.T): 1766.89
Air-Gap Ampere Turns (A.T): 285.754

Correction Factor for Magnetic
  Circuit Length of Stator Yoke: 0.588822
Correction Factor for Magnetic
  Circuit Length of Rotor Yoke: 0.1
Saturation Factor for Teeth: 1.06031
Saturation Factor for Teeth & Yoke: 7.3167
Induced-Voltage Factor: 0.881851

Stator Current Density (A/mm^2): 9.14843
Specific Electric Loading (A/mm): 37.7602
Stator Thermal Load (A^2/mm^3): 345.447

Rotor Bar Current Density (A/mm^2): 3.56873
Rotor Ring Current Density (A/mm^2): 3.09023

Half-Turn Length of
  Stator Winding (mm):    317.736

   WINDING ARRANGEMENT

The 3-phase, 1-layer winding can be arranged in 30 slots as below:

AAAAAZZZZZBBBBBXXXXXCCCCCYYYYY

Average coil pitch is: 12.6

Angle per slot (elec. degrees): 12
Phase-A axis (elec. degrees): 114
First slot center (elec. degrees): 0

   TRANSIENT FEA INPUT DATA

For one phase of the Stator Winding:
  Number of Turns: 240
  Parallel Branches: 1
  Terminal Resistance (ohm): 3.7503
  End Leakage Inductance (H): 0.00905761
For Rotor End Ring Between Two Bars of One Side:
  Equivalent Ring Resistance (ohm): 8.18256e-007
  Equivalent Ring Inductance (H): 1.53061e-009
2D Equivalent Value:
  Equivalent Model Depth (mm): 105
  Equivalent Stator Stacking Factor: 0.97
  Equivalent Rotor Stacking Factor: 0.95
Estimated Rotor Inertial Moment (kg m^2): 0.0071771

baohuijx · 发表于 2016-1-14 14:43

Y112_2P_4KW,定子额定相电流应为4.5A,现计算为8.07325，显然不对，但用上所程序计算是对的

zhangxiaoxiao · 发表于 2016-1-18 11:56

感谢楼主分享，受益匪浅啊

andyzuo · 发表于 2016-1-20 23:39

得慢慢看,是好东西，谢谢楼主

czvmkl · 发表于 2016-2-11 18:42

收藏了,慢慢看

Mdriver · 发表于 2016-3-10 16:22

这么精彩的帖子，值得震撼！说心里话，只有给公司做备份时，才有。

fee0307 · 发表于 2016-3-15 14:58

感谢楼主，新手学习很有用

fee0307 · 发表于 2016-3-18 09:22

楼主，最后一个压缩包不能下载，求助？？

ZTMOTOR · 发表于 2016-3-31 10:50

支持！写得很详细

785611578 · 发表于 2016-4-1 15:37

求问铁心材料的Kh Ke Kc 怎么求得

wudy · 发表于 2016-4-9 08:45

此帖必须收藏，楼主太有心了！！顶

yuanye · 发表于 2016-4-9 18:08

对新手有很好的指导意义

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[Maxwell] Ansoft EM专题讨论（二）——三相异步电机设计