3-phase 9kVA power 60 Hz 208 Volt 8-pole synchronous generator winding resistance is negligible, synchronous reactance is j8 ohms per phase. The generator was first connected in parallel with a 3-phase 60 Hz, 208 V generator. If the excitation current increases by 25% without changing the drive power, find the stator winding current per phase, the power coefficient (cosφ) and the reactive power provided by the generator.
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.
3-phase 9kVA power 60 Hz 208 Volt 8-pole synchronous generator winding resistance is negligible, synchronous reactance is j8 ohms per phase. The generator was first connected in parallel with a 3-phase 60 Hz, 208 V generator.
If the excitation current increases by 25% without changing the drive power, find the stator winding current per phase, the power coefficient (cosφ) and the reactive power provided by the generator.
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