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Author Question: Explain the difference between commutator segments and slip rings. What will be an ideal ... (Read 20 times)

robinn137

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on: Jul 26, 2018
Explain the difference between commutator segments and slip rings.
 
  What will be an ideal response?

Question 2

Explain how a doubly fed alternator operates.
 
  What will be an ideal response?


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joshbk44

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Reply #1 on: Jul 26, 2018
Answer to Question 1

In its simplest form, commutator segments are split rings that rotate with the rotor of a dc generator and form a mechanical rectifier for the output. Practical commutators have multiple segments and each pair of segments is connected to a separate rotor winding. Slip rings are used on ac generators and made of two solid rings that are connected to the ends of the single armature winding.

Answer to Question 2

A doubly fed alternator uses a tightly controlled ac voltage from an external source to generate the rotating field. The output frequency of the generator is determined by a combination of the rotating speed of the generator and the frequency of ac that is

supplied from the external source. As a result, the generator's output is controlled to be in perfect sync with the grid even if the rotor speed changes.


robinn137

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Reply 2 on: Jul 26, 2018
Excellent

scikid

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Reply 3 on: Yesterday
Wow, this really help

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