DC Electric Machine: A 3-phase, 2-pole, round-pole and delta-connected synchronous generator with a synchronous reactance of 25 Ohms. This generator operates in parallel with a network with a phase-to-phase voltage of 400V and a frequency of 50Hz. (Mechanical losses and armature resistance will be neglected. Machine is magnetically linear, no saturation). 1) Generator transmits 1800+j2000 VA complex apparent power to the grid. What is the load angle in this case? Write in degrees with a sign. 2) After these operating conditions, the driving torque of the generator is increased 4 times without changing the excitation current. (T2 = 4*T2). A) What is the new load angle of the generator? Write in degrees with a sign. B) In this new study, what is the angle of the current that the generator will give to the mains with respect to the mains voltage? (Fi2) (like x degrees forward)
DC Electric Machine: A 3-phase, 2-pole, round-pole and delta-connected synchronous generator with a synchronous reactance of 25 Ohms. This generator operates in parallel with a network with a phase-to-phase voltage of 400V and a frequency of 50Hz. (Mechanical losses and armature resistance will be neglected. Machine is magnetically linear, no saturation). 1) Generator transmits 1800+j2000 VA complex apparent power to the grid. What is the load angle in this case? Write in degrees with a sign. 2) After these operating conditions, the driving torque of the generator is increased 4 times without changing the excitation current. (T2 = 4*T2). A) What is the new load angle of the generator? Write in degrees with a sign. B) In this new study, what is the angle of the current that the generator will give to the mains with respect to the mains voltage? (Fi2) (like x degrees forward)
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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DC Electric Machine:
A 3-phase, 2-pole, round-pole and delta-connected synchronous generator with a synchronous reactance of 25 Ohms. This generator operates in parallel with a network with a phase-to-phase voltage of 400V and a frequency of 50Hz.
(
1) Generator transmits 1800+j2000 VA complex apparent power to the grid. What is the load angle in this case? Write in degrees with a sign.
2) After these operating conditions, the driving torque of the generator is increased 4 times without changing the excitation current. (T2 = 4*T2).
A) What is the new load angle of the generator? Write in degrees with a sign.
B) In this new study, what is the angle of the current that the generator will give to the mains with respect to the mains voltage? (Fi2) (like x degrees forward)
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