这个数据正常吗
这个数据是不是不正常，一个12KW的电机？ 效率11.3%，你说呢 电流那么大 肯定不正常了 描述的再清楚一点，什么电机，什么应用。。。。？ 电流密度太大了，铜损太高，电机设计有问题。 GENERAL DATARated 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 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。 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。 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。 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 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。 铜耗太大，发热太严重，效率太低 这个是RM直接生成的模型与数据，不应该会出现这个吧。 电机体积小，试着增大一下体积 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 Type of Circuit:L4 试试：减匝数，加叠高
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