A three-phase 6-pole, 60 Hz Y-connected synchronous generator is connected to an infinite bus. The open circuit voltage (field voltage) is 12 kV line-to-line. The terminal voltage is 14 kV line- to-line. The synchronous reactance is 2 2. The open circuit voltage leads the terminal voltage by 30°. The machine's rotational losses are 2MW. (a) Find the real power output of the generator. (b) Draw the phasor diagram for the generator. (Include current!) (c) Calculate the power factor being supplied by the generator. (d) Find the rotor speed in rpm (e) Find the torque required to drive the machine (f) Find the pullover power (g) Find the generator's efficiency (h) Find the generator's voltage regulation.
A three-phase 6-pole, 60 Hz Y-connected synchronous generator is connected to an infinite bus. The open circuit voltage (field voltage) is 12 kV line-to-line. The terminal voltage is 14 kV line- to-line. The synchronous reactance is 2 2. The open circuit voltage leads the terminal voltage by 30°. The machine's rotational losses are 2MW. (a) Find the real power output of the generator. (b) Draw the phasor diagram for the generator. (Include current!) (c) Calculate the power factor being supplied by the generator. (d) Find the rotor speed in rpm (e) Find the torque required to drive the machine (f) Find the pullover power (g) Find the generator's efficiency (h) Find the generator's voltage regulation.
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Author:Robert L. Boylestad
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Transcribed Image Text:A three-phase 6-pole, 60 Hz Y-connected synchronous generator is connected to an infinite bus.
The open circuit voltage (field voltage) is 12 kV line-to-line. The terminal voltage is 14 kV line-
to-line. The synchronous reactance is 2 2. The open circuit voltage leads the terminal voltage by
30°. The machine's rotational losses are 2MW.
(a) Find the real power output of the generator.
(b) Draw the phasor diagram for the generator. (Include current!)
(c) Calculate the power factor being supplied by the generator.
(d) Find the rotor speed in rpm
(e) Find the torque required to drive the machine
(f) Find the pullover power
(g) Find the generator's efficiency
(h) Find the generator's voltage regulation.
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