RMXPRT设计精度询问

szqszq8 · 发表于 2009-4-16 23:00

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最近小弟在学习RMPXRT5设计单相小功率电机,但几个方安下来,感觉不是很准,主要可能有以下几个方面的因素:
1,材料磁曲线不知道该怎么选,但好象影响不是很大,我用的DW450-50比较多,而实际中我们用的是50WW800不知道用什么来代替比较好,
2,有几个数据我不知道是不是输入正确,像铁损,还有饶线我做的电机的饶线方法和程序中的有不同,
3,还有对有什么经验也请一并传授,谢谢!

hypo_qu · 发表于 2009-4-17 07:47

任何软件都不可能做到和实际一样的，主要是靠人的经验，软件只是代替了相当繁琐的理论计算过程。你只要多做多记，抓住软件和实际的相对有规律的地方，那就可以将计算换化成实际了，这就是经验。

PLMOTOR · 发表于 2009-4-17 22:16

用RM5算还不如用手算呢

fengxingyun · 发表于 2009-4-18 00:46

参数部分准确，部分不行，需要参看手算结果

szqszq8 · 发表于 2009-4-19 20:48

透露点经验吧，各位大侠。或者那位可以写个学习进阶手册什么的。

szqszq8 · 发表于 2009-4-19 21:02

另外还请各位，目前国内的50WW800冲片，可以对应的使用RMXPRT中的哪种型号的矽钢片？还有D23是一般的热轧片吗？

szqszq8 · 发表于 2009-4-19 21:12

这是我搞的一个实验，正好在做，我就用了RMPXRT这个软件做了下，不知道什么地方需要改？大家就当是改作业吧，有什么需要改帮我提下意见，先谢谢了！
  Single-Phase Induction Motor Design

  File: c:/ansoft1/examples/maxwell/default/szq.pjt/szq.res

   GENERAL DATA

Rated Output Power (kW): 0.12
Rated Voltage (V): 220
Number of Poles: 4
Frequency (Hz): 50
Rated Speed (rpm): 1300
Friction and Wind Loss (W): 3
Type of Load: Fan Load
Iron Core Length (mm):    25
Stacking Factor of Iron Core: 0.95
Type of Steel: D23
Operating Temperature (C): 75
Rotor Position: Inner
Operation mode: Capacitor-Run Mode
Run Capacitance (uF): 5
  & Its Resistance (ohm): 6.3662
Speed-Adjustment mode: No Speed-Adjustment

   STATOR DATA

Number of Stator Slots: 24
Outer Diameter of Stator (mm):    120
Outer Width of Stator (mm):    118
Inner Diameter of Stator (mm):    77

Type of Stator Slot: 3
Dimension of Stator Slot
         hs0 (mm):    0.9
         hs1 (mm):    0.66
         hs2 (mm):    9.8
         bs0 (mm):    2.3
         bs1 (mm):    5.7
         bs2 (mm):    8
         rs (mm):    1

Top Tooth Width (mm):    4.78768
Bottom Tooth Width (mm):    5.05332

Main    Aux.
Type of Coils: 21       21
Coil Position: Bot    Top
Conductor Length Adjustment (mm):    2       2
Number of Parallel Branches: 1       1
Number of Wires per Conductor: 1       1
Number of Conductors per Slot:
         slot # 1: 230    63
         slot # 2: 168    172
         slot # 3: 62       234

Main-Phase Wire Diameter (mm):    0.31
Aux.-Phase Wire Diameter (mm):    0.31
Main-Phase Wire Wrap (mm):    0.06
Aux.-Phase Wire Wrap (mm):    0.06

Slot Insulation Thickness (mm):    0.18

   ROTOR DATA

Number of Rotor Slots: 34
Air Gap (mm):    0.25
Inner Diameter of Rotor (mm):    12.7

Type of Rotor Slot: 1
Dimension of Rotor Slot
         hr0 (mm):    1.124
         hr01 (mm):    0
         hr2 (mm):    6.5
         br0 (mm):    0.837
         br1 (mm):    2.911
         br2 (mm):    2.5
Cast Rotor: No

Number of Vents: 0
Vent Diameter (mm):    0
Vent Location (mm):    0
Skew Width: 1.65
End Length of Bar (mm):    0
Height of End Ring (mm):    4
Width of End Ring (mm):    9
Bar Resistivity (ohm.mm^2/m): 0.0217
End_Ring Resistivity (ohm.mm^2/m): 0.0434

   MATERIAL CONSUMPTION

Armature Copper Density (kg/m^3):    8900
Rotor Bar Material Density (kg/m^3):    8900
Rotor Ring Material Density (kg/m^3):    2700
Armature Core Steel Density (kg/m^3):    7800
Rotor Core Steel Density (kg/m^3):    7800

Main Winding Copper Weight (kg):    0.23874
Auxiliary Winding Copper Weight (kg):    0.239421
Rotor Bar Material Weight (kg):    0.183634
Rotor Ring Material Weight (kg):    0.0429047
Armature Core Steel Weight (kg):    0.868632
Rotor Core Steel Weight (kg):    0.675115
Total Net Weight (kg):    2.24845

Armature Core Steel Consumption (kg):    1.84961
Rotor Core Steel Consumption (kg):    0.86264

   RATED OPERATION

Main-Phase Resistance (ohm): 102.181
Aux.-Phase Resistance (ohm): 95.6271
Main Leakage Reactance (ohm): 39.5789
Aux. Leakage Reactance (ohm): 35.8199
Rotor Resistance (ohm): 42.4683
Rotor Leakage Reactance (ohm): 49.7613
Magnetizing Reactance (ohm): 660.1
Turn Ratio of Aux. to Main-Coil: 1.01947

Stator Line Current (A): 0.981257
Main-Phase Current (A): 0.794174
Aux.-Phase Current (A): 0.402915
Phase Shift between Main
  and Aux. Currents (degrees): 75.2885
Capacitor Voltage (V): 256.504

Capacitor Loss (W): 1.03349
Copper Loss of Stator Winding (W): 79.9708
Copper Loss of Rotor Winding (W): 22.4236
Iron-Core Loss (W): 2.89874
Friction & Wind Loss (W): 2.61137
Total Loss (W): 108.938
Input Power (W): 213.941
Output Power (W): 105.003

Mechanical Shaft Torque (N.m): 0.807817
Efficiency (%): 49.0803
Power Factor: 0.991033
Rated Slip: 0.1725
Rated Shaft Speed (rpm): 1241.25

   NO-LOAD OPERATION

Main Leakage Reactance (ohm): 34.7578
Aux. Leakage Reactance (ohm): 30.8093
Rotor Leakage Reactance (ohm): 40.6468
Magnetizing Reactance (ohm): 451.962

No-Load Stator Line Current (A): 0.38452
No-Load Main-Phase Current (A): 0.505271
No-Load Aux.-Phase Current (A): 0.607022
Phase Shift between No-Load Main
  and Aux. Currents (degrees): 145.094

No-Load Iron-Core Loss (W): 8.34783
No-Load Input Power (W): 82.5367
No-Load Power Factor: 0.975677
No-Load Slip: 0.00303223
No-Load Shaft Speed (rpm): 1495.45

   BREAK-DOWN OPERATION

Break-Down Slip: 0.15
Break-Down Torque (N.m): 0.812781
Break-Down Torque Ratio: 1.00615

   LOCKED-ROTOR OPERATION

Locked-Rotor Torque (N.m): 0.23409
Locked-Rotor Line Current (A): 1.31353
Locked-Rotor Torque Ratio: 0.28978
Locked-Rotor Current Ratio: 1.33862

Locked-Rotor Main-Phase Current (A): 1.37465
Locked-Rotor Aux.-Phase Current (A): 0.38732
Phase Shift between Locked-Rotor Main
  and Aux. Currents (degrees): 108.109

   DETAILED DATA AT RATED OPERATION

Main Slot Leakage Reactance (ohm): 10.1854
Main End-Winding Leakage
  Reactance (ohm): 14.1035
Main Differential Leakage
  Reactance (ohm): 15.29

Aux. Slot Leakage Reactance (ohm): 6.94037
Aux. End-Winding Leakage
  Reactance (ohm): 12.9885
Aux. Differential Leakage
  Reactance (ohm): 15.891

Rotor Slot Leakage Reactance (ohm): 13.5005
Rotor End-Winding Leakage
  Reactance (ohm): 6.72691
Rotor Differential Leakage
  Reactance (ohm): 7.80484
Skewing Leakage Reactance (ohm): 21.729

Main-Phase Winding Factor: 0.776095
Aux.-Phase Winding Factor: 0.776023

Stator-Teeth Flux Density (Tesla): 0.96844
Rotor-Teeth Flux Density (Tesla): 1.05685
Stator-Yoke Flux Density (Tesla): 0.985388
Rotor-Yoke Flux Density (Tesla): 0.417607
Air-Gap Flux Density (Tesla): 0.436366

Stator-Teeth Ampere Turns (A.T): 3.84205
Rotor-Teeth Ampere Turns (A.T): 3.68909
Stator-Yoke Ampere Turns (A.T): 11.2478
Rotor-Yoke Ampere Turns (A.T): 1.34942
Air-Gap Ampere Turns (A.T): 113.71

Correction Factor for Magnetic
  Circuit Length of Stator Yoke: 0.7
Correction Factor for Magnetic
  Circuit Length of Rotor Yoke: 0.7
Saturation Factor for Teeth: 1.06623
Saturation Factor for Teeth & Yoke: 1.17702
Induced-Voltage Factor: 0.616253

Mean Half-Turn Length of
  Main-Phase Winding (mm):    96.5772
Mean Half-Turn Length of
  Aux.-Phase Winding (mm):    88.6982

Main Winding Current Density (A/mm^2): 10.5221
Aux. Winding Current Density (A/mm^2): 5.33826
Specific Electric Loading (A/mm): 18.3309
Mean Stator Thermal Load (A^2/mm^3): 160.484

Fill-Factor Thermal-Load
   (%)       (A^2/mm^3)
         Slot # 1 61.701       204.129
         Slot # 2 71.599       175.987
         Slot # 3 62.333       101.336

   TRANSIENT FEA INPUT DATA

For Main Winding:
  Number of Turns: 1840
  Parallel Branches: 1
  Terminal Resistance (ohm): 102.181
  End Leakage Inductance (H): 0.0448928
For Aux. Winding:
  Number of Turns: 1876
  Parallel Branches: 1
  Terminal Resistance (ohm): 95.6271
  End Leakage Inductance (H): 0.0413438
  Starting Capacitance (uF): 0
  Running Capacitance (uF): 5
  Switch Speed (rpm): 0
For Rotor End Ring Between Two Bars of One Side:
  End Ring Resistance (ohm): 3.88497e-006
  End Ring Leakage Inductance (H): 2.84698e-009
  Skew Leakage Inductance (H): 9.18707e-009
2D Equivalent Value:
  Equivalent Air-Gap Length (mm): 25
  Equivalent Stator Stacking Factor: 0.95
  Equivalent Rotor Stacking Factor: 0.95
Estimated Rotor Moment of Inertia (kg m^2): 0.000655662