A synchronous generator has the following ratings: 3 phase apparent power, 250MVA, 13.8kV (L-L, RMS), 0.85 PF, 60Hz, round rotor. Xs = 1.2 pu om the machine's rating base. a) 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
A synchronous generator has the following ratings: 3 phase apparent power, 250MVA, 13.8kV (L-L, RMS), 0.85 PF, 60Hz, round rotor. Xs = 1.2 pu om the machine's rating base. a) 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
Chapter39: Synchronous Motor Operation
Section: Chapter Questions
Problem 14SQ: Induction motors and welding transformers require magnetizing current, which causes a. lagging power...
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A synchronous generator has the following ratings: 3 phase apparent power, 250MVA,
13.8kV (L-L, RMS), 0.85 PF, 60Hz, round rotor. Xs = 1.2 pu om the machine's rating base.
a) If the torque is reduced by 15% by reducing the
unchanged, calculate the real and reactive power output, the generated voltage and its corresponding phase angle
b) Sketch the capability curve for this generator identifying the rated power, field limit curve,
armature limit curve, the power angle δ and power factor angle Φ at rated conditions.
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