| 5. System of base units-1 |
7.1 |
|
| 5.1. Three-phase power |
|
|
|
5.2. Power per phase |
| Sб |
= |
|
= |
|
· |
106 |
= |
296 |
· |
106 |
VA |
|
| 5.3. Stator voltage |
| Uб |
|
= |
|
= |
|
· |
103 |
=13.87 |
· |
103 |
V |
|
| 5.4. Time |
| tб = 1/ωн
= 1/314 = 3.18·10-3 s |
| 5.6. Stator resistance |
| Rб |
= |
|
= |
|
· |
103 |
· |
10-3 |
= |
0.648 |
Ohm |
|
| 5.7. Stator flux linkage |
| ψб = Uб·tб
= 13.87·103·3.18·10-3 = 44.1 Wb |
| 5.8. Stator inductance |
| Lб |
= |
|
= |
|
· |
10-3 |
= |
2.06 |
· |
10-3 |
H |
|
| 5.9. Rotor power |
| Sfб = Sб
= 296·106 VA |
| 5.10. Base excitation current
(Using methodology [L1]) |
|
|
| Excitation current at nominal
TG voltage (from straight no-load characteristic line) |
| Ifспрямл.
= 1230 A |
|
Mutual inductance of
excitation winding and stator winding
at nom.voltage |
|
|
|
|