RMXPRT设计精度询问

szqszq8

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

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

用RM5算还不如用手算呢

fengxingyun

参数部分准确，部分不行，需要参看手算结果

szqszq8

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

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

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

szqszq8

file:///c:/QQ截图未命名

szqszq8

期待你的回答！

695407244

最近我也在学，感觉资料太少

yzhangx

RMXPRT我在用，计算单相电机不太准，主、付相电流与实际相差很多。

maste2002

yzhangx 发表于 2011-4-28 10:41
RMXPRT我在用，计算单相电机不太准，主、付相电流与实际相差很多。

请问RMXPRT计算单相电机时，为什么主线线径反而比副线少?这个好像不符合一般规律.