A 1,000-kVA, 3,000-V, 50-Hz, 3-(, star-connected alternator has an armature effective resistance of 0.2Ω. A field current of 40A produces a short-circuit current of 200A and an open-circuit emf of 1040V (line value). Calculate the full load percentage regulation at a pf of 0.8 lagging. -21.43%b. 21.43%c. -24.31%d. 24.31%
Synchronous Generator
In comparison to an asynchronous generator, it is a machine where the rotor speed is equal to the rotating magnetic field produced by the stator, i.e., mechanical speed is equal to the electrical speed, thus called synchronous, and not asynchronous.
Salient Pole Rotor
Salient pole rotor includes a large number of exposed poles mounted on a magnetic wheel. The construction of a bright pole is as shown in the image on the left. The proposed poles are made of metal laminations. The rotor winding is provided on these poles and is supported by pole shoes.
A 1,000-kVA, 3,000-V, 50-Hz, 3-(, star-connected alternator has an armature effective resistance of 0.2Ω. A field current of 40A produces a short-circuit current of 200A and an open-circuit emf of 1040V (line value).
Calculate the full load percentage regulation at a pf of 0.8 lagging. -21.43%b. 21.43%c. -24.31%d. 24.31%
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