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chenzhiqiang

       PERMANENT MAGNET DC MOTOR DESIGN

                      File: Setup1.res


     GENERAL DATA

Rated Output Power (kW):        0.096
Rated Voltage (V):        12
Number of Poles:        2
Given Rated Speed (rpm):        6100
Frictional Loss (W):        0
Windage Loss (W):        0
Brush Displacement:        0
One-Pair Brush Voltage Drop (V):        1.5
Type of Load:        Constant Power
Operating Temperature (C):        75


     ROTOR DATA

Number of Rotor Slots:        12
Outer Diameter of Rotor (mm):          44
Inner Diameter of Rotor (mm):          9

Type of Rotor Slot:        2
Dimension of Rotor Slot
            hr0 (mm):          0.71
            hr1 (mm):          0.81
            hr2 (mm):          9.44
            br0 (mm):          2.5
            br1 (mm):          8.57
            br2 (mm):          3.44
Top Tooth Width (mm):          2.30485
Bottom Tooth Width (mm):          2.37354
Skew Width (Number of Slots):        0

Length of Rotor Core (mm):          41
Stacking Factor of Rotor Core:        0.95
Type of Steel:        D23_50
Slot Insulation Thickness (mm):          0
Layer Insulation Thickness (mm):          0
End Length Adjustment (mm):          0
Number of Virtual Slots per Slot:        1
Number of Conductors per Slot:        20
Type of Armature Winding:        Lap Winding
Multiplex Number:        2
Coil Pitch (Virtual Slots):        5
Number of Wires per Conductor:        2
Wire Diameter (mm):          0.9
Wire Wrap Thickness (mm):          0
Number of Parallel Branches:        4
Net Slot Area (mm^2):        61.3342
Limited Slot Fill Factor (%):        75
Slot Fill Factor (%):        52.8253


     STATOR DATA

Minimum Air Gap (mm):          0.35
Outer Diameter (mm):          64.3
Length of Stator (mm):          95
Stacking Factor of Iron Core:        0.95
Type of Steel:        steel_1008
Polar Arc Offset (mm):          0
Polar Arc Radius (mm):          22.35
Physical Pole Embrace:        0.726
Computed Pole Embrace:        0.725916
Max. Thickness of Magnet (mm):          6.5
Length of Magnet (mm):          56
Type of Magnet:        Y30BH


     PERMANENT MAGNET DATA

Residual Flux Density (Tesla):        0.39
Coercive Force (kA/m):        232
Maximum Energy Density (kJ/m^3):        27
Relative Recoil Permeability:        1.1004
Demagnetized Flux Density (Tesla):        0.15501
Recoil Residual Flux Density (Tesla):        0.377954
Recoil Coercive Force (kA/m):        273.331


     COMMUTATOR & BRUSH DATA

Type of Commutator:        Cylinder Type
Commutator Diameter (mm):          22.5
Commutator Length (mm):          20
Commutator Insulation (mm):          0.5
Brush Width (mm):          8
Brush Length (mm):          15
Number of Brush Pairs:        1
Press per Unit Area (g/mm^2):        0.25
Frictional Coefficient:        0
Magnetic Shaft:        Yes

     MATERIAL CONSUMPTION

Armature Copper Density (kg/m^3):          8900
Permanent Magnet Density (kg/m^3):          7800
Armature Core Steel Density (kg/m^3):          7820
Rotor Core Steel Density (kg/m^3):          7872

Armature Copper Weight (kg):          0.311984
Permanent Magnet Weight (kg):          0.331553
Armature Core Steel Weight (kg):          0.196704
Stator Core Steel Weight (kg):          0.449289
Total Net Weight (kg):          1.28953

Armature Core Steel Consumption (kg):          0.672837
Stator Core Steel Consumption (kg):          3.21783


     NO-LOAD MAGNETIC DATA

Rotor-Teeth Flux Density (Tesla):        1.91174
Rotor-Yoke Flux Density (Tesla):        0.984302
Stator-Yoke Flux Density (Tesla):        1.27355
Air-Gap Flux Density (Tesla):        0.362588
Magnet Flux Density (Tesla):        0.311563

Rotor-Teeth Ampere Turns (A.T):        170.441
Rotor-Yoke Ampere Turns (A.T):        1.89304
Stator-Yoke Ampere Turns (A.T):        19.9652
Air-Gap Ampere Turns (A.T):        119.752
Magnet Ampere Turns (A.T):        -312.086

Armature Reactive Ampere Turns
  at Start Operation (A.T):        6064.74
Leakage-Flux Factor:        1
Correction Factor for Magnetic
  Circuit Length of Rotor Yoke:        0.658787
Correction Factor for Magnetic
  Circuit Length of Stator Yoke:        0.605316

No-Load Speed (rpm):        6918.35
No-Load Current (A):        0.293717
No-Load Input Power (W):        3.5246

Torque Constant KT (Nm/A):        0.0144825
Back-EMF Constant KE (Vs/rad):        0.0144825

Cogging Torque (N.m):        0.0285416


     FULL-LOAD DATA

Input Current (A):        9.67987
Armature Current (A):        2.41997
Armature Thermal Load (A^2/mm^3):        7.99139
Specific Electric Loading (A/mm):        4.20163
Armature Current Density (A/mm^2):        1.90197
Frictional and Windage Loss (W):        0
Iron-Core Loss (W):        2.97543
Armature Copper Loss (W):        2.43336
Brush Loss (W):        14.5198
Total Loss (W):        19.9286
Output Power (W):        96.2298
Input Power (W):        116.158
Efficiency (%):        82.8436

Rated Speed (rpm):        6757.63
Rated Torque (N.m):        0.135984

Locked-Rotor Torque (N.m):        5.85549
Locked-Rotor Current (A):        404.316


     COMMUTATING DATA

Induced Voltage by Inductance (V):        0.64614
Induced Voltage
  by Armature Reaction Field (V):        0.337233
Induced Voltage by Main Field (V):        -0
Total Induced Voltage (V):        0.983373


     TRANSIENT FEA INPUT DATA

For Armature Winding:
  Number of Turns:        120
  Parallel Branches:        4
  Terminal Resistance (ohm):        0.0259698
  End Leakage Inductance (H):        1.28302e-005
For One Armature Coil:
  Number of Turns:        10
  Parallel Branches:        1
  Terminal Resistance (ohm):        0.0391572
  End Leakage Inductance (H):        1.71069e-005
2D Equivalent Value:
  Equivalent Model Depth (mm):        41
  Equivalent Stator Stacking Factor:        2.20122
  Equivalent Rotor Stacking Factor:        0.95
  Equivalent Br (Tesla):        0.384407
  Equivalent Hc (kA/m):        273.331
Estimated Rotor Inertial Moment (kg m^2):        0.000117676


空载电流很小,堵转电流很大.实际要求是额定转矩0.146N.M,额定电流12A   .如果额定电流要小于8A又怎么设定?

chenzhiqiang

都没人帮忙,哎

perch88

要别人帮你设计电机？
减小电流？可以减小Rated Output Power

chenzhiqiang

谢谢老大顶一下,我在学呢,不是要人家帮我设计.Rated Output Power小了,扭矩又达不到.

chenzhiqiang

每天过来看一下,也没有人看下

perch88

不认为这是设计电机的工作？设计电机其实就是权衡各个参数达到指标