Section 14.7: Performance of a Round-Rotor Synchronous Motor cont.
For zero voltage regulation, |E| = |Vt| = 6.6KV/Ö3 = 3810 V.
The rated current is |Ia| = |Srated|/(Ö3 |Vrated|) = 2.5MVA/(Ö3´6.6KV) which yields |Ia| = 218.7 A. Ia = 218.7/q A.
and E = Vt + ZsIa (KVL) yields:
3810/d V. = 3810/0° V. + 10.4/89.6° W ´ 218.7/q A.
For the generator of Example 14.2 (p. 540), calculate the power factor for zero voltage regulation at full (rated KVA) load