Research Article
Irreversible Demagnetization of a Large Capacity Line-Start Permanent Magnet Synchronous Motors considering Influence of Permanent Magnet Temperature
Table 1
Electromagnetic parameters.
| | Items | Value |
| | Rated power (kW) | 630 | | Rated voltage (V) | 6000 | | Frequency (Hz) | 50 | | Number of poles | 4 | | Number of stator slots | 54 | | Stator external diameter (mm) | 740 | | Stator inner diameter (mm) | 521 | | Core length (mm) | 670 | | Air-gap length (mm) | 2 | | Number of rotor slots | 44 | | Moment of inertia of rotor (kg·m2) | 40 | | Moment of inertia of impeller (kg·m2) | 60 | | Iron core | DW470 | | PM type | N38SH | | PM width (mm) | 69.5 | | PM thickness (mm) | 20 | | PM remanence at (T) | 1.23 |
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