During an open-circuit test on a 50 kVA, 380 V synchronous machine, the terminal voltage was 356 V at an excitation of 5 A. On short circuit, full load circulated for an excitation of 6 A. Determine the synchronous impedance at 5 A.
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.
During an open-circuit test on a 50 kVA, 380 V synchronous machine, the terminal
voltage was 356 V at an excitation of 5 A. On short circuit, full load circulated for an
excitation of 6 A. Determine the synchronous impedance at 5 A.
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