The open circuit and short circuit data of a three-phase, 3300 V, 500 kVA, star connected alternator are as follows : Open circuit test: Field current 9 A, open circuit voltage 470 line value Short circuit test: Field current 9 A, short circuit line current 80 A Resistance of the winding between the two slip rings is 2.3Ω Find the full load voltage regulation at 0.8 lagging power factor and 0.8 leading power factor.
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.
The open circuit and short circuit data of a three-phase, 3300 V, 500 kVA, star connected alternator are as follows :
Open circuit test: Field current 9 A, open circuit voltage 470 line value
Short circuit test: Field current 9 A, short circuit line current 80 A
Resistance of the winding between the two slip rings is 2.3Ω
Find the full load voltage regulation at 0.8 lagging power factor and 0.8 leading power factor.
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