RMxprt电磁计算单显示无法提供额定输出功率

doufaq

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。

doufaq

额定输出功率300w,直流母线电压44.4v,额定转速700转。

沃丶特

直径小，达不到要求的输出功率吧。

doufaq

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。

doufaq

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

doufaq

先发三张。。。