A 480-V, 500-kVA, 0.82-PF-lagging, Y-connected synchronous generator has a synchronous reactance of 0.38 2 and a negligible armature resistance. This generator is supplying power to a 480-V, 80-kW, 0.82- PF-leading, Y-connected synchronous motor with a synchronous reactance of 1.8 Q and a negligible armature resistance. The synchronous generator is adjusted to have a terminal voltage of 480 V when the motor is drawing the rated power at unity power factor. a) Calculate the magnitudes and angles of E4 for both machines. b) If the flux of the motor is increased by 12 percent, what happens to the terminal voltage of the power system? c) Draw the resultant combined phasor diagram.

A 480-V, 500-kVA, 0.82-PF-lagging, Y-connected synchronous generator has a synchronous reactance of 0.38 2 and a negligible armature resistance. This generator is supplying power to a 480-V, 80-kW, 0.82- PF-leading, Y-connected synchronous motor with a synchronous reactance of 1.8 Q and a negligible armature resistance. The synchronous generator is adjusted to have a terminal voltage of 480 V when the motor is drawing the rated power at unity power factor. a) Calculate the magnitudes and angles of E4 for both machines. b) If the flux of the motor is increased by 12 percent, what happens to the terminal voltage of the power system? c) Draw the resultant combined phasor diagram.

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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