RMxprt电磁计算单显示无法提供额定输出功率
6S8P的外转子永磁同步电机，按照公式算出的电枢直径，和有效长度。电机设计小白，希望各位大佬指点。 额定输出功率300w,直流母线电压44.4v,额定转速700转。 直径小，达不到要求的输出功率吧。 沃丶特 发表于 2019-11-15 09:08直径小，达不到要求的输出功率吧。
应该不是，我改了一下线径和并绕根数就不提示了（不知道为啥，希望大佬告知），但是2D仿真的结果与RMxprt有很大差距。比如转矩大了2倍多，绕组损耗大的更多。。。工程文件上传不了，希望大家都来发表一下见解。 GENERAL DATA
Rated Output Power (kW): 0.3
Rated Voltage (V): 26.37
Number of Poles: 8
Frequency (Hz): 46.6667
Frictional Loss (W): 0
Windage Loss (W): 0
Rotor Position: Outer
Type of Circuit: Y3
Type of Source: Sine
Domain: Time
Operating Temperature (C): 100
STATOR DATA
Number of Stator Slots: 6
Outer Diameter of Stator (mm): 60
Inner Diameter of Stator (mm): 15
Type of Stator Slot: 3
Stator Slot
hs0 (mm): 1.5
hs1 (mm): 1.5
hs2 (mm): 12.4
bs0 (mm): 16.5
bs1 (mm): 19.7954
bs2 (mm): 5.47712
rs (mm): 0.5
Top Tooth Width (mm): 8.7
Bottom Tooth Width (mm): 8.7
Skew Width (Number of Slots): 0
Length of Stator Core (mm): 37
Stacking Factor of Stator Core: 0.97
Type of Steel: DW315_50
Designed Wedge Thickness (mm): 0
Slot Insulation Thickness (mm): 0.2
Layer Insulation Thickness (mm): 0.2
End Length Adjustment (mm): 2
Number of Parallel Branches: 1
Number of Conductors per Slot: 80
Type of Coils: 21
Average Coil Pitch: 1
Number of Wires per Conductor: 2
Wire Diameter (mm): 0.8
Wire Wrap Thickness (mm): 0.03
Slot Area (mm^2): 211.293
Net Slot Area (mm^2): 169.667
Limited Slot Fill Factor (%): 75
Stator Slot Fill Factor (%): 64.9649
Coil Half-Turn Length (mm): 66.6076
Wire Resistivity (ohm.mm^2/m): 0.0217
ROTOR DATA
Minimum Air Gap (mm): 0.3
Outer Diameter (mm): 77
Length of Rotor (mm): 37
Stacking Factor of Iron Core: 0.97
Type of Steel: DW315_50
Polar Arc Radius (mm): 30.3
Mechanical Pole Embrace: 0.75
Electrical Pole Embrace: 0.748915
Max. Thickness of Magnet (mm): 3
Width of Magnet (mm): 17.5913
Type of Magnet: NdFe35
Type of Rotor: 1
Magnetic Shaft: No
PERMANENT MAGNET DATA
Residual Flux Density (Tesla): 1.23
Coercive Force (kA/m): 890
Maximum Energy Density (kJ/m^3): 273.675
Relative Recoil Permeability: 1.09981
Demagnetized Flux Density (Tesla): 0
Recoil Residual Flux Density (Tesla): 1.23
Recoil Coercive Force (kA/m): 890
MATERIAL CONSUMPTION
Armature Wire Density (kg/m^3): 8900
Permanent Magnet Density (kg/m^3): 7400
Armature Core Steel Density (kg/m^3): 7600
Rotor Core Steel Density (kg/m^3): 7600
Armature Copper Weight (kg): 0.286059
Permanent Magnet Weight (kg): 0.12309
Armature Core Steel Weight (kg): 0.377223
Rotor Core Steel Weight (kg): 0.319937
Total Net Weight (kg): 1.10631
Armature Core Steel Consumption (kg): 0.850272
Rotor Core Steel Consumption (kg): 0.895417
STEADY STATE PARAMETERS
Stator Winding Factor: 0.866025
D-Axis Reactive Reactance Xad (ohm): 0.0751943
Q-Axis Reactive Reactance Xaq (ohm): 0.0751943
D-Axis Reactance X1+Xad (ohm): 0.946641
Q-Axis Reactance X1+Xaq (ohm): 0.946641
Armature Leakage Reactance X1 (ohm): 0.871447
Zero-Sequence Reactance X0 (ohm): 0.839127
Armature Phase Resistance R1 (ohm): 0.248592
Armature Phase Resistance at 20C (ohm): 0.189227
NO-LOAD MAGNETIC DATA
Stator-Teeth Flux Density (Tesla): 1.71172
Stator-Yoke Flux Density (Tesla): 1.33176
Rotor-Yoke Flux Density (Tesla): 1.59284
Air-Gap Flux Density (Tesla): 0.896084
Magnet Flux Density (Tesla): 0.914767
Stator-Teeth By-Pass Factor: 0.00679653
Stator-Yoke By-Pass Factor: 1.04326e-005
Rotor-Yoke By-Pass Factor: 7.86494e-005
Stator-Teeth Ampere Turns (A.T): 89.5094
Stator-Yoke Ampere Turns (A.T): 0.661316
Rotor-Yoke Ampere Turns (A.T): 11.5318
Air-Gap Ampere Turns (A.T): 582.743
Magnet Ampere Turns (A.T): -684.285
Leakage-Flux Factor: 1
Correction Factor for Magnetic
Circuit Length of Stator Yoke: 0.444883
Correction Factor for Magnetic
Circuit Length of Rotor Yoke: 0.2845
No-Load Line Current (A): 7.00547
No-Load Input Power (W): 37.5802
Cogging Torque (N.m): 0.250072
FULL-LOAD DATA
Maximum Line Induced Voltage (V): 22.9596
Root-Mean-Square Line Current (A): 12.0031
Root-Mean-Square Phase Current (A): 12.0031
Armature Thermal Load (A^2/mm^3): 364.945
Specific Electric Loading (A/mm): 30.5656
Armature Current Density (A/mm^2): 11.9397
Frictional and Windage Loss (W): 0
Iron-Core Loss (W): 0.963836
Armature Copper Loss (W): 107.447
Total Loss (W): 108.411
Output Power (W): 300.115
Input Power (W): 408.526
Efficiency (%): 73.4629
Synchronous Speed (rpm): 700
Rated Torque (N.m): 4.09413
Torque Angle (degree): 49.9405
Maximum Output Power (W): 331.62
Torque Constant KT (Nm/A): 0.341089
WINDING ARRANGEMENT
The 3-phase, 2-layer winding can be arranged in 3 slots as below:
ACB
Angle per slot (elec. degrees): 240
Phase-A axis (elec. degrees): 120
First slot center (elec. degrees): 0
TRANSIENT FEA INPUT DATA
For Armature Winding:
Number of Turns: 80
Parallel Branches: 1
Terminal Resistance (ohm): 0.248592
End Leakage Inductance (H): 4.42512e-005
2D Equivalent Value:
Equivalent Model Depth (mm): 37
Equivalent Stator Stacking Factor: 0.97
Equivalent Rotor Stacking Factor: 0.97
Equivalent Br (Tesla): 1.23
Equivalent Hc (kA/m): 890
Estimated Rotor Inertial Moment (kg m^2): 0.000994321 先发三张。。。
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