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三相異步電機設計
這是用一部實際測試的馬達數據去跑的
其中斜槽漏抗計算加在轉子側的部分過大
導致功因較差,啟動轉矩的模擬偏低。
請問有可以改變設定內部阻抗參數的方法嗎?
求各位先進指點
GENERAL DATA
Given Output Power (kW): 1
Rated Voltage (V): 220
Winding Connection: Delta
Number of Poles: 2
Given Speed (rpm): 3259
Frequency (Hz): 60
Stray Loss (W): 10
Frictional Loss (W): 0
Windage Loss (W): 0
Operation Mode: Motor
Type of Load: Constant Power
Operating Temperature (C): 75
STATOR DATA
Number of Stator Slots: 24
Outer Diameter of Stator (mm): 135
Inner Diameter of Stator (mm): 74
Type of Stator Slot: 2
Stator Slot
hs0 (mm): 0.95
hs1 (mm): 0.8
hs2 (mm): 9
bs0 (mm): 2.03
bs1 (mm): 6.17
bs2 (mm): 9
Top Tooth Width (mm): 3.99493
Bottom Tooth Width (mm): 3.53861
Length of Stator Core (mm): 85
Stacking Factor of Stator Core: 0.96
Type of Steel: S23_0.50mm_PFerror
Number of lamination sectors 0
Press board thickness (mm): 0
Magnetic press board No
Number of Parallel Branches: 1
Type of Coils: 21
Coil Pitch: 9
Number of Conductors per Slot: 84
Number of Wires per Conductor: 1
Wire Diameter (mm): 0.7
Wire Wrap Thickness (mm): 0.104
Wedge Thickness (mm): 0
Slot Liner Thickness (mm): 0
Layer Insulation (mm): 0
Slot Area (mm^2): 105.282
Net Slot Area (mm^2): 100.074
Slot Fill Factor (%): 54.259
Limited Slot Fill Factor (%): 75
Wire Resistivity (ohm.mm^2/m): 0.0217
Top Free Space in Slot (%): 0
Bottom Free Space in Slot (%): 0
Conductor Length Adjustment (mm): 7
End Length Correction Factor 1
End Leakage Reactance Correction Factor 1
ROTOR DATA
Number of Rotor Slots: 34
Air Gap (mm): 0.35
Inner Diameter of Rotor (mm): 20
Type of Rotor Slot: 2
Rotor Slot
hs0 (mm): 0.94
hs1 (mm): 2
hs2 (mm): 3.66
bs0 (mm): 1.12
bs1 (mm): 2.9
bs2 (mm): 2.4
Cast Rotor: Yes
Half Slot: No
Length of Rotor (mm): 85
Stacking Factor of Rotor Core: 0.96
Type of Steel: S23_0.50mm_PFerror
Skew Width: 3.8388
End Length of Bar (mm): 0
Height of End Ring (mm): 11.075
Width of End Ring (mm): 8
Resistivity of Rotor Bar
at 75 Centigrade (ohm.mm^2/m): 0.0377
Resistivity of Rotor Ring
at 75 Centigrade (ohm.mm^2/m): 0.0377
Magnetic Shaft: No
MATERIAL CONSUMPTION
Armature Copper Density (kg/m^3): 8900
Rotor Bar Material Density (kg/m^3): 2700
Rotor Ring Material Density (kg/m^3): 2700
Armature Core Steel Density (kg/m^3): 7700
Rotor Core Steel Density (kg/m^3): 7700
Armature Copper Weight (kg): 1.59062
Rotor Bar Material Weight (kg): 0.132914
Rotor Ring Material Weight (kg): 0.0907024
Armature Core Steel Weight (kg): 4.70377
Rotor Core Steel Weight (kg): 2.09014
Total Net Weight (kg): 8.60815
Armature Core Steel Consumption (kg): 9.26342
Rotor Core Steel Consumption (kg): 2.7023
RATED-LOAD OPERATION
Stator Resistance (ohm): 8.72857
Stator Resistance at 20C (ohm): 7.17995
Stator Leakage Reactance (ohm): 6.04859
Rotor Resistance (ohm): 11.2268
Rotor Resistance at 20C (ohm): 9.23491
Rotor Leakage Reactance (ohm): 14.6507
Resistance Corresponding to
Iron-Core Loss (ohm): 6747.39
Magnetizing Reactance (ohm): 417.614
Stator Phase Current (A): 2.04911
Current Corresponding to
Iron-Core Loss (A): 0.0294605
Magnetizing Current (A): 0.475994
Rotor Phase Current (A): 1.89934
Copper Loss of Stator Winding (W): 109.95
Copper Loss of Rotor Winding (W): 121.501
Iron-Core Loss (W): 17.5686
Frictional and Windage Loss (W): 0
Stray Loss (W): 10
Total Loss (W): 259.019
Input Power (kW): 1.25903
Output Power (kW): 1.00001
Mechanical Shaft Torque (N.m): 2.97489
Efficiency (%): 79.427
Power Factor: 0.923555
Rated Slip: 0.108337
Rated Shaft Speed (rpm): 3209.99
NO-LOAD OPERATION
No-Load Stator Resistance (ohm): 8.72857
No-Load Stator Leakage Reactance (ohm): 6.05811
No-Load Rotor Resistance (ohm): 11.2263
No-Load Rotor Leakage Reactance (ohm): 14.6851
No-Load Stator Phase Current (A): 0.519505
No-Load Iron-Core Loss (W): 20.8469
No-Load Input Power (W): 37.9969
No-Load Power Factor: 0.0816538
No-Load Slip: 6.61238e-006
No-Load Shaft Speed (rpm): 3599.98
BREAK-DOWN OPERATION
Break-Down Slip: 0.51
Break-Down Torque (N.m): 6.07058
Break-Down Torque Ratio: 2.04061
Break-Down Phase Current (A): 6.11492
LOCKED-ROTOR OPERATION
Locked-Rotor Torque (N.m): 5.20785
Locked-Rotor Phase Current (A): 7.89856
Locked-Rotor Torque Ratio: 1.7506
Locked-Rotor Current Ratio: 3.85463
Locked-Rotor Stator Resistance (ohm): 8.72857
Locked-Rotor Stator
Leakage Reactance (ohm): 5.97709
Locked-Rotor Rotor Resistance (ohm): 11.268
Locked-Rotor Rotor
Leakage Reactance (ohm): 14.3884
DETAILED DATA AT RATED OPERATION
Stator Slot Leakage Reactance (ohm): 2.25092
Stator End-Winding Leakage
Reactance (ohm): 2.16827
Stator Differential Leakage
Reactance (ohm): 1.6294
Rotor Slot Leakage Reactance (ohm): 3.48911
Rotor End-Winding Leakage
Reactance (ohm): 0.623603
Rotor Differential Leakage
Reactance (ohm): 1.58174
Skewing Leakage Reactance (ohm): 8.95628
Stator Winding Factor: 0.884765
Stator-Teeth Flux Density (Tesla): 1.05658
Rotor-Teeth Flux Density (Tesla): 0.865286
Stator-Yoke Flux Density (Tesla): 0.923402
Rotor-Yoke Flux Density (Tesla): 0.80348
Air-Gap Flux Density (Tesla): 0.393949
Stator-Teeth Ampere Turns (A.T): 7.07595
Rotor-Teeth Ampere Turns (A.T): 3.06041
Stator-Yoke Ampere Turns (A.T): 35.4644
Rotor-Yoke Ampere Turns (A.T): 7.23746
Air-Gap Ampere Turns (A.T): 138.911
Correction Factor for Magnetic
Circuit Length of Stator Yoke: 0.7
Correction Factor for Magnetic
Circuit Length of Rotor Yoke: 0.524763
Saturation Factor for Teeth: 1.07297
Saturation Factor for Teeth & Yoke: 1.38038
Induced-Voltage Factor: 0.903553
Stator Current Density (A/mm^2): 5.3245
Specific Electric Loading (A/mm): 17.7694
Stator Thermal Load (A^2/mm^3): 94.6134
Rotor Bar Current Density (A/mm^2): 5.84967
Rotor Ring Current Density (A/mm^2): 6.09432
Half-Turn Length of
Stator Winding (mm): 230.356
WINDING ARRANGEMENT
The 3-phase, 2-layer winding can be arranged in 12 slots as below:
AAAAZZZZBBBB
Angle per slot (elec. degrees): 15
Phase-A axis (elec. degrees): 90
First slot center (elec. degrees): 0
TRANSIENT FEA INPUT DATA
For one phase of the Stator Winding:
Number of Turns: 336
Parallel Branches: 1
Terminal Resistance (ohm): 8.72857
End Leakage Inductance (H): 0.00575152
For Rotor End Ring Between Two Bars of One Side:
Equivalent Ring Resistance (ohm): 2.37257e-006
Equivalent Ring Inductance (H): 1.33351e-008
2D Equivalent Value:
Equivalent Model Depth (mm): 85
Equivalent Stator Stacking Factor: 0.96
Equivalent Rotor Stacking Factor: 0.96
Estimated Rotor Inertial Moment (kg m^2): 0.00187901 |
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