RMXPRT设计精度询问
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! 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。 用RM5算还不如用手算呢 参数部分准确，部分不行，需要参看手算结果 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。 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？ 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 file:///c:/QQ截图未命名 期待你的回答！ 最近我也在学，感觉资料太少 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。 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.
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