Open Access
Table 3
The variation range of design variables.
| Parameters | Initial value | After optimization | Variation range | Unit |
|---|---|---|---|---|
| Pole − arc coefficient | 0.7 | 0.605 | 13.57% | / |
| Outer diameter of stator (D) | 88 | 87.54 | 0.52% | mm |
| Outer diameter of rotor (DRo) | 100 | 100.59 | 0.59% | mm |
| Thickness of permanent magnet (hm) | 2.5 | 2.38 | 4.8% | mm |
| Efficiency (η) | 94.67 | 95.06 | 0.41% | % |
| Thermal load (TL) | 20.45 | 21.78 | 6.5% | A/mm2 |
| Flux in stator teeth (Φteeth) | 0.48 | 0.39 | 18.75% | Wb |
| Flux in stator yoke (Φγokest) | 0.035 | 0.029 | 17.14% | Wb |
| Flux in rotor yoke (Φγokrotor) | 1.26 | 0.88 | 30.16% | Wb |
| Air − gap flux (AGF) | 0.72 | 0.66 | 8.33% | T |
| Cogging torque (CT) | 0.036 | 0.022 | 38.89% | N⋅m |
| Core loss (CL) | 26.9 | 22.5 | 16.36% | w |
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