Appendix:Voltage measurements taken in the experiment:SG Terminal Voltagewith Regulator [ V]SG Terminal Voltagewithout Regulator [ V ]Load Current(Inductive Load)No Load1821841 A1801781.5 A1781752 A1781462.5 A176119ЗА1761003.5 A175784 A17450 Explain briefly in a few sentences the each question below.a) Why is the excitation control of generator needed?b) What is the type of load that requires excitation control?c) Explain the effects of armature reaction on generator voltage.

Explain briefly in a few sentences the each question below. a) Why is the excitation control of generator needed? b) What is the type of load that requires excitation control? c) Explain the effects of armature reaction on generator voltage.

Explain briefly in a few sentences the each question below. a) Why is the excitation control of generator needed? b) What is the type of load that requires excitation control? c) Explain the effects of armature reaction on generator voltage.

Electric Motor Control

10th Edition

ISBN:9781133702818

Author:Herman

Publisher:Herman

Chapter57: Dc Variable-speed Control-motor Drives

Section: Chapter Questions

Problem 8SQ

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Concept explainers

Synchronous Generator

In comparison to an asynchronous generator, it is a machine where the rotor speed is equal to the rotating magnetic field produced by the stator, i.e., mechanical speed is equal to the electrical speed, thus called synchronous, and not asynchronous.

Salient Pole Rotor

Salient pole rotor includes a large number of exposed poles mounted on a magnetic wheel. The construction of a bright pole is as shown in the image on the left. The proposed poles are made of metal laminations. The rotor winding is provided on these poles and is supported by pole shoes.

Question

Appendix:
Voltage measurements taken in the experiment:
SG Terminal Voltage
with Regulator [ V]
SG Terminal Voltage
without Regulator [ V ]
Load Current
(Inductive Load)
No Load
182
184
1 A
180
178
1.5 A
178
175
2 A
178
146
2.5 A
176
119
ЗА
176
100
3.5 A
175
78
4 A
174
50

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