Table 1 Design specifications of the generators.
Parameter | Outer Rotor RFPMG | Double-sided Slotted AFPMG |
|---|---|---|
No. of Pole Pairs | 20 | 20 |
No. of Slots | 60 | 30 |
No. of Coils/Phase | 20 | 10 |
Slot Fill Factor | 0.55 | 0.8 |
Slot/Pole/Phase | 0.5 | 0.25 |
Teeth Width (mm) | 1.64 | 1 |
Stator Parameters | ||
Length (L) (mm) | 50 | 45 |
Inner Diameter (mm) | 153.46 | 148 |
Outer Diameter (mm) | 187.46 | 308 |
Stator Yoke Thickness (mm) | 10.5 | 9.8 |
Winding Resistance (Ω) | 0.34 | 0.28 |
Rotor Parameters | ||
Length (L) (mm) | 50 | 45 |
Inner Diameter (mm) | 189.46 | 148.56 |
Outer Diameter (mm) | 208.13 | 247.60 |
Rotor Back Iron Thickness (mm) | 5.2 | 4.7 |
Winding Parameters | ||
Number of Turns/Coil | 448 | 397 |
Coil Pitch | 1 | 1 |
Wire Size (mm) | 8.54 | 10.35 |
Length of Air Gap (mm) | 1 | 1 |
Thickness PM (mm) | 5.33 | 6.17 |
Additional Parameters | ||
Air-Gap Flux Density (T) | 0.8 | 0.963 |
Core Loss (W) | 8.44 | 4.98 |
Efficiency (%) | 90.03 | 97.85 |
Frequency (Hz) | 50 | 50 |
Machine Weight (kg) | 18.2 | 16.5 |
Cooling Method | Air-cooled | Air-cooled |
Bearing Type & Size | Deep Groove 6205 | Deep Groove 6203 |
Frame Material | Aluminium | Aluminium |
