这个数据正常吗

心是晴朗的

这个数据是不是不正常，一个12KW的电机？

suwenbin_hit

效率11.3%，你说呢

蜗牛背着壳

电流那么大 肯定不正常了

轩轩

描述的再清楚一点，什么电机，什么应用。。。。？

夏天_GDLfs

电流密度太大了，铜损太高，电机设计有问题。

心是晴朗的

   GENERAL DATA

Rated Output Power (kW):        12
Rated Voltage (V):        310
Number of Poles:        28
Given Rated Speed (rpm):        500
Frictional Loss (W):        0
Windage Loss (W):        0
Rotor Position:        Outer
Type of Load:        Constant Power
Type of Circuit:        Y3
Lead Angle of Trigger in Elec. Degrees:        0
Trigger Pulse Width in Elec. Degrees:        120
One-Transistor Voltage Drop (V):        0
One-Diode Voltage Drop (V):        0
Operating Temperature (C):        75
Maximum Current for CCC (A):        0
Minimum Current for CCC (A):        0


     STATOR DATA

Number of Stator Slots:        24
Outer Diameter of Stator (mm):          306.4
Inner Diameter of Stator (mm):          125

Type of Stator Slot:        1
Stator Slot       
            hs0 (mm):          1.5
            hs2 (mm):          38.6
            bs0 (mm):          2.5
            bs1 (mm):          20.3
            bs2 (mm):          10.2
Top Tooth Width (mm):          16.8445
Bottom Tooth Width (mm):          16.7814
Skew Width (Number of Slots)        0

Length of Stator Core (mm):          48
Stacking Factor of Stator Core:        0.95
Type of Steel:        DW315_50
Designed Wedge Thickness (mm):          1.48683
Slot Insulation Thickness (mm):          0
Layer Insulation Thickness (mm):          0
End Length Adjustment (mm):          0
Number of Parallel Branches:        2
Number of Conductors per Slot:        136
Type of Coils:        21
Average Coil Pitch:        1
Number of Wires per Conductor:        3
Wire Diameter (mm):          1.06
Wire Wrap Thickness (mm):          0.11
Slot Area (mm^2):        794.955
Net Slot Area (mm^2):        779.858
Limited Slot Fill Factor (%):        75
Stator Slot Fill Factor (%):        71.617
Coil Half-Turn Length (mm):          81.8196


     ROTOR DATA

Minimum Air Gap (mm):          1.8
Outer Diameter (mm):          343
Length of Rotor (mm):          48
Stacking Factor of Iron Core:        0.95
Type of Steel:        DW315_50
Polar Arc Radius (mm):          155
Mechanical Pole Embrace:        0.7
Electrical Pole Embrace:        0.693584
Max. Thickness of Magnet (mm):          5
Width of Magnet (mm):          24.3223
Type of Magnet:        NdFe30
Type of Rotor:        1
Magnetic Shaft:        No


     PERMANENT MAGNET DATA

Residual Flux Density (Tesla):        1.1
Coercive Force (kA/m):        838
Maximum Energy Density (kJ/m^3):        230.45
Relative Recoil Permeability:        1.0446
Demagnetized Flux Density (Tesla):        6.71387e-005
Recoil Residual Flux Density (Tesla):        1.1
Recoil Coercive Force (kA/m):        838

     MATERIAL CONSUMPTION

Armature Copper Density (kg/m^3):          8900
Permanent Magnet Density (kg/m^3):          7550
Armature Core Steel Density (kg/m^3):          7600
Rotor Core Steel Density (kg/m^3):          7600

Armature Copper Weight (kg):          6.29246
Permanent Magnet Weight (kg):          1.25521
Armature Core Steel Weight (kg):          14.6883
Rotor Core Steel Weight (kg):          4.15059
Total Net Weight (kg):          26.3866

Armature Core Steel Consumption (kg):          26.0561
Rotor Core Steel Consumption (kg):          15.4327

心是晴朗的

这是电机数据，可以帮忙看下问题出在哪里了吗。是从RMxprt中直接生成的模型。

心是晴朗的

夏天_GDLfs 发表于 2019-3-1 09:17
电流密度太大了，铜损太高，电机设计有问题。

可以帮忙看下，我电机数据在哪里出问题了，谢谢您。我的是永磁无刷直流电机。

夏天_GDLfs

心是晴朗的 发表于 2019-3-1 09:43
可以帮忙看下，我电机数据在哪里出问题了，谢谢您。我的是永磁无刷直流电机。

你这数据没有贴完整啊，贴完整看下。

心是晴朗的

         BRUSHLESS PERMANENT MAGNET DC MOTOR DESIGN

                      File: Setup1.res


     GENERAL DATA

Rated Output Power (kW):        12
Rated Voltage (V):        310
Number of Poles:        28
Given Rated Speed (rpm):        500
Frictional Loss (W):        0
Windage Loss (W):        0
Rotor Position:        Outer
Type of Load:        Constant Power
Type of Circuit:        Y3
Lead Angle of Trigger in Elec. Degrees:        0
Trigger Pulse Width in Elec. Degrees:        120
One-Transistor Voltage Drop (V):        0
One-Diode Voltage Drop (V):        0
Operating Temperature (C):        75
Maximum Current for CCC (A):        0
Minimum Current for CCC (A):        0


     STATOR DATA

Number of Stator Slots:        24
Outer Diameter of Stator (mm):          306.4
Inner Diameter of Stator (mm):          125

Type of Stator Slot:        1
Stator Slot       
            hs0 (mm):          1.5
            hs2 (mm):          38.6
            bs0 (mm):          2.5
            bs1 (mm):          20.3
            bs2 (mm):          10.2
Top Tooth Width (mm):          16.8445
Bottom Tooth Width (mm):          16.7814
Skew Width (Number of Slots)        0

Length of Stator Core (mm):          48
Stacking Factor of Stator Core:        0.95
Type of Steel:        DW315_50
Designed Wedge Thickness (mm):          1.48683
Slot Insulation Thickness (mm):          0
Layer Insulation Thickness (mm):          0
End Length Adjustment (mm):          0
Number of Parallel Branches:        2
Number of Conductors per Slot:        154
Type of Coils:        21
Average Coil Pitch:        1
Number of Wires per Conductor:        3
Wire Diameter (mm):          1
Wire Wrap Thickness (mm):          0.11
Slot Area (mm^2):        794.955
Net Slot Area (mm^2):        779.858
Limited Slot Fill Factor (%):        75
Stator Slot Fill Factor (%):        72.9915
Coil Half-Turn Length (mm):          81.8196


     ROTOR DATA

Minimum Air Gap (mm):          1.8
Outer Diameter (mm):          343
Length of Rotor (mm):          48
Stacking Factor of Iron Core:        0.95
Type of Steel:        DW315_50
Polar Arc Radius (mm):          155
Mechanical Pole Embrace:        0.5
Electrical Pole Embrace:        0.502194
Max. Thickness of Magnet (mm):          5
Width of Magnet (mm):          17.3818
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):        0.0398639
Recoil Residual Flux Density (Tesla):        1.23
Recoil Coercive Force (kA/m):        890

     MATERIAL CONSUMPTION

Armature Copper 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):          6.34148
Permanent Magnet Weight (kg):          0.878766
Armature Core Steel Weight (kg):          14.6883
Rotor Core Steel Weight (kg):          4.15059
Total Net Weight (kg):          26.0591

Armature Core Steel Consumption (kg):          26.0561
Rotor Core Steel Consumption (kg):          15.4327


     STEADY STATE PARAMETERS

Stator Winding Factor:        0.933013
D-Axis Reactive Inductance Lad (H):        0.00130807
Q-Axis Reactive Inductance Laq (H):        0.00130807
D-Axis Inductance L1+Lad(H):        0.0089383
Q-Axis Inductance L1+Laq(H):        0.0089383
Armature Leakage Inductance L1 (H):        0.00763023
Zero-Sequence Inductance L0 (H):        0.00571187
Armature Phase Resistance R1 (ohm):        0.23209
Armature Phase Resistance at 20C (ohm):        0.190913
D-Axis Time Constant (s):        0.00563604
Q-Axis Time Constant (s):        0.00563604

Ideal Back-EMF Constant KE (Vs/rad):        5.47431
Start Torque Constant KT (Nm/A):        5.06924
Rated Torque Constant KT (Nm/A):        9.43821


     NO-LOAD MAGNETIC DATA

Stator-Teeth Flux Density (Tesla):        0.989289
Stator-Yoke Flux Density (Tesla):        0.219817
Rotor-Yoke Flux Density (Tesla):        0.709669
Air-Gap Flux Density (Tesla):        0.8355
Magnet Flux Density (Tesla):        0.892095

Stator-Teeth By-Pass Factor:        0.000143868
Stator-Yoke By-Pass Factor:        8.10201e-006
Rotor-Yoke By-Pass Factor:        6.44062e-006

Stator-Teeth Ampere Turns (A.T):        5.66165
Stator-Yoke Ampere Turns (A.T):        0.203915
Rotor-Yoke Ampere Turns (A.T):        1.13707
Air-Gap Ampere Turns (A.T):        1215.44
Magnet Ampere Turns (A.T):        -1222.5

Armature Reactive Ampere Turns
  at Start Operation (A.T):        4251.24
Leakage-Flux Factor:        1
Correction Factor for Magnetic
  Circuit Length of Stator Yoke:        0.832602
Correction Factor for Magnetic
  Circuit Length of Rotor Yoke:        0.886552

No-Load Speed (rpm):        545.348
Cogging Torque (N.m):        0.0165287


     FULL-LOAD DATA

Note:
This motor cannot offer the given rated output power.
The following results are of the maximum output.

Average Input Current (A):        162.773
Root-Mean-Square Armature Current (A):        253.476
Armature Thermal Load (A^2/mm^3):        26175.6
Specific Electric Loading (A/mm):        486.632
Armature Current Density (A/mm^2):        53.7894
Frictional and Windage Loss (W):        0
Iron-Core Loss (W):        2.25221
Armature Copper Loss (W):        44735.5
Transistor Loss (W):        0
Diode Loss (W):        0
Total Loss (W):        44737.8
Output Power (W):        5721.86
Input Power (W):        50459.7
Efficiency (%):        11.3395

Rated Speed (rpm):        35.5661
Rated Torque (N.m):        1536.29

Locked-Rotor Torque (N.m):        3379.19
Locked-Rotor Current (A):        666.607


     WINDING ARRANGEMENT

The 3-phase, 2-layer winding can be arranged in 12 slots as below:

AXZCBYXACZYB


Angle per slot (elec. degrees):        210
Phase-A axis (elec. degrees):        120
First slot center (elec. degrees):        0



     TRANSIENT FEA INPUT DATA

For Armature Winding:
  Number of Turns:        616
  Parallel Branches:        2
  Terminal Resistance (ohm):        0.23209
  End Leakage Inductance (H):        0.000113998
2D Equivalent Value:
  Equivalent Model Depth (mm):        48
  Equivalent Stator Stacking Factor:        0.95
  Equivalent Rotor Stacking Factor:        0.95
  Equivalent Br (Tesla):        1.23
  Equivalent Hc (kA/m):        890
Estimated Rotor Moment of Inertia (kg m^2):        0.498706

心是晴朗的

夏天_GDLfs 发表于 2019-3-1 10:50
你这数据没有贴完整啊，贴完整看下。

非常感谢您！！！可以帮忙看下。

束是猫先生

铜耗太大，发热太严重，效率太低

心是晴朗的

这个是RM直接生成的模型与数据，不应该会出现这个吧。

沃丶特

电机体积小，试着增大一下体积

张老五

显然不正常
5千瓦多的电机，电流辣么大，效率辣么低
查一下接线是不是有错误

w3865

Type of Circuit:  L4

Mr.晋

试试：减匝数，加叠高