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BRUSHLESS PERMANENT MAGNET DC MOTOR DESIGN
File: Setup1.res
GENERAL DATA
Rated Output Power (kW): 0.04
Rated Voltage (V): 24
Number of Poles: 4
Given Rated Speed (rpm): 2500
Frictional Loss (W): 1.66667
Windage Loss (W): 0
Rotor Position: Inner
Type of Load: Fan Load
Type of Circuit: Y3
Lead Angle of Trigger in Elec. Degrees: 0
Trigger Pulse Width in Elec. Degrees: 120
One-Transistor Voltage Drop (V): 1
One-Diode Voltage Drop (V): 0.7
Operating Temperature (C): 75
Maximum Current for CCC (A): 5
Minimum Current for CCC (A): 0
STATOR DATA
Number of Stator Slots: 6
Outer Diameter of Stator (mm): 55
Inner Diameter of Stator (mm): 26.6
Type of Stator Slot: 4
Stator Slot
hs0 (mm): 1
hs1 (mm): 0.5
hs2 (mm): 8
bs0 (mm): 2
bs1 (mm): 11.7345
bs2 (mm): 20.9721
rs (mm): 2
Top Tooth Width (mm): 4.6
Bottom Tooth Width (mm): 4.6
Skew Width (Number of Slots) 0
Length of Stator Core (mm): 22
Stacking Factor of Stator Core: 0.97
Type of Steel: steel_1008
Designed Wedge Thickness (mm): 0.253617
Slot Insulation Thickness (mm): 0
Layer Insulation Thickness (mm): 0
End Length Adjustment (mm): 0
Number of Parallel Branches: 1
Number of Conductors per Slot: 114
Type of Coils: 21
Average Coil Pitch: 1
Number of Wires per Conductor: 1
Wire Diameter (mm): 1.024
Wire Wrap Thickness (mm): 0
Slot Area (mm^2): 178.813
Net Slot Area (mm^2): 173.934
Limited Slot Fill Factor (%): 75
Stator Slot Fill Factor (%): 68.7257
Coil Half-Turn Length (mm): 44.8285
ROTOR DATA
Minimum Air Gap (mm): 0.4
Inner Diameter (mm): 8
Length of Rotor (mm): 20
Stacking Factor of Iron Core: 0.97
Type of Steel: steel_1008
Polar Arc Radius (mm): 12.9
Mechanical Pole Embrace: 0.7
Electrical Pole Embrace: 0.698809
Max. Thickness of Magnet (mm): 3
Width of Magnet (mm): 12.535
Type of Magnet: Material1
Type of Rotor: 1
Magnetic Shaft: No
PERMANENT MAGNET DATA
Residual Flux Density (Tesla): 660
Coercive Force (kA/m): 400
Maximum Energy Density (kJ/m^3): 66000
Relative Recoil Permeability: 1313.07
Demagnetized Flux Density (Tesla): 0.926514
Recoil Residual Flux Density (Tesla): 660
Recoil Coercive Force (kA/m): 400
MATERIAL CONSUMPTION
Armature Copper Density (kg/m^3): 8900
Permanent Magnet Density (kg/m^3): 6000
Armature Core Steel Density (kg/m^3): 7872
Rotor Core Steel Density (kg/m^3): 7872
Armature Copper Weight (kg): 0.224745
Permanent Magnet Weight (kg): 0.0180503
Armature Core Steel Weight (kg): 0.125526
Rotor Core Steel Weight (kg): 0.0393463
Total Net Weight (kg): 0.407668
Armature Core Steel Consumption (kg): 0.496527
Rotor Core Steel Consumption (kg): 0.0623514
STEADY STATE PARAMETERS
Stator Winding Factor: 0.866025
D-Axis Reactive Inductance Lad (H): 0.00349228
Q-Axis Reactive Inductance Laq (H): 0.00349228
D-Axis Inductance L1+Lad(H): 0.00489781
Q-Axis Inductance L1+Laq(H): 0.00489781
Armature Leakage Inductance L1 (H): 0.00140553
Zero-Sequence Inductance L0 (H): 0.000833111
Armature Phase Resistance R1 (ohm): 0.269314
Armature Phase Resistance at 20C (ohm): 0.221533
D-Axis Time Constant (s): 0.0129673
Q-Axis Time Constant (s): 0.0129673
Ideal Back-EMF Constant KE (Vs/rad): 0.0717745
Start Torque Constant KT (Nm/A): 0.0723422
Rated Torque Constant KT (Nm/A): 0.0795287
NO-LOAD MAGNETIC DATA
Stator-Teeth Flux Density (Tesla): 2.24545
Stator-Yoke Flux Density (Tesla): 2.22807
Rotor-Yoke Flux Density (Tesla): 1.01293
Air-Gap Flux Density (Tesla): 0.76361
Magnet Flux Density (Tesla): 0.926514
Stator-Teeth By-Pass Factor: 0.083698
Stator-Yoke By-Pass Factor: 0.0185305
Rotor-Yoke By-Pass Factor: 1.59766e-005
Stator-Teeth Ampere Turns (A.T): 435.344
Stator-Yoke Ampere Turns (A.T): 610.379
Rotor-Yoke Ampere Turns (A.T): 1.71036
Air-Gap Ampere Turns (A.T): 272.074
Magnet Ampere Turns (A.T): -1198.32
Armature Reactive Ampere Turns
at Start Operation (A.T): 149.358
Leakage-Flux Factor: 1
Correction Factor for Magnetic
Circuit Length of Stator Yoke: 0.31243
Correction Factor for Magnetic
Circuit Length of Rotor Yoke: 0.756711
No-Load Speed (rpm): 2852.49
Cogging Torque (N.m): 0.0238009
FULL-LOAD DATA
Average Input Current (A): 1.98009
Root-Mean-Square Armature Current (A): 1.71052
Armature Thermal Load (A^2/mm^3): 29.0798
Specific Electric Loading (A/mm): 14.0008
Armature Current Density (A/mm^2): 2.07701
Frictional and Windage Loss (W): 1.65777
Iron-Core Loss (W): 0.000159942
Armature Copper Loss (W): 2.36394
Transistor Loss (W): 4.07452
Diode Loss (W): 0.07695
Total Loss (W): 8.17335
Output Power (W): 39.3488
Input Power (W): 47.5222
Efficiency (%): 82.801
Rated Speed (rpm): 2486.66
Rated Torque (N.m): 0.151108
Locked-Rotor Torque (N.m): 0.179367
Locked-Rotor Current (A): 0.363652
WINDING ARRANGEMENT
The 3-phase, 2-layer winding can be arranged in 3 slots as below:
ABC
Angle per slot (elec. degrees): 120
Phase-A axis (elec. degrees): 60
First slot center (elec. degrees): 0
TRANSIENT FEA INPUT DATA
For Armature Winding:
Number of Turns: 114
Parallel Branches: 1
Terminal Resistance (ohm): 0.269314
End Leakage Inductance (H): 2.1042e-005
2D Equivalent Value:
Equivalent Model Depth (mm): 20
Equivalent Stator Stacking Factor: 1.067
Equivalent Rotor Stacking Factor: 0.97
Equivalent Br (Tesla): 660
Equivalent Hc (kA/m): 400
Estimated Rotor Moment of Inertia (kg m^2): 6.78584e-006 |
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