Problem 2) A synchronous generator has the following ratings: 3 phase apparent power, 250MVA, 13.8kV (L-L, RMS), 0.85 PF, 60HZ, round rotor. X, = 1.2 pu on the machine's rating base. a) Calculate the real and reactive power output. b) Calculate the magnitude of the prime mover torque c) Calculate the internally generated voltage and its phase angle 8. d) If the torque is reduced by 15% by reducing the mechanical input but the field current is left unchanged, calculate the real and reactive power output, the generated voltage and its corresponding phase angle ô,
Problem 2) A synchronous generator has the following ratings: 3 phase apparent power, 250MVA, 13.8kV (L-L, RMS), 0.85 PF, 60HZ, round rotor. X, = 1.2 pu on the machine's rating base. a) Calculate the real and reactive power output. b) Calculate the magnitude of the prime mover torque c) Calculate the internally generated voltage and its phase angle 8. d) If the torque is reduced by 15% by reducing the mechanical input but the field current is left unchanged, calculate the real and reactive power output, the generated voltage and its corresponding phase angle ô,
Introductory Circuit Analysis (13th Edition)
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ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
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I just wan solution for part d
Transcribed Image Text:Problem 2) A synchronous generator has the following ratings: 3 phase apparent power, 250MVA,
13.8kV (L-L, RMS), 0.85 PF, 60HZ, round rotor. X = 1.2 pu on the machine's rating base.
a) Calculate the real and reactive power output.
b) Calculate the magnitude of the prime mover torque
c) Calculate the internally generated voltage and its phase angle ô.
d) If the torque is reduced by 15% by reducing the mechanical input but the field current is left
unchanged, calculate the real and reactive power output, the generated voltage and its
corresponding phase angle ô,
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