Electricity generator theory question

Click For Summary

Discussion Overview

The discussion centers on the factors influencing the output and efficiency of electrical generators, particularly focusing on the role of rotational speed of the rotor and its impact on output. Participants explore theoretical concepts related to generator performance under constant variable conditions.

Discussion Character

  • Exploratory, Technical explanation, Conceptual clarification

Main Points Raised

  • One participant questions how the rotational speed of magnets affects generator output and seeks to understand the relationship between increased speed and output magnitude.
  • Another participant clarifies their inquiry to focus on whether increasing the rotor's rotational speed, while keeping all other variables constant, would lead to an increase in output.
  • There is mention of the number of turns in the wiring being directly proportional to output, but uncertainty remains regarding the specific effects of rotational speed on output.
  • A participant notes the need to consider the additional work required to increase rotational speed, suggesting that this factor complicates the relationship between speed and output.

Areas of Agreement / Disagreement

Participants have not reached a consensus on the effects of rotational speed on generator output, and multiple views regarding the relationship between speed, efficiency, and output remain present.

Contextual Notes

Limitations include the assumption of constant variables and the lack of clarity on how increased rotational speed interacts with other factors influencing generator output.

elitt222333
Messages
3
Reaction score
0
What are the factors that influence a generators output (efficiency?). Does the rotational speed of the magnets influence output? If so, by what magnitude can this be increased? ie. If a system is running at x rpm by what relation can the output be increased if the rotational speed is through the use of gears to 5x... 10x... etc. This may be vague but I am just wondering about the concept. Thanks!
 
Last edited:
Physics news on Phys.org
elitt222333 said:
What are the factors that influence a generators output (efficiency?). Does the rotational speed of the magnets influence output? If so, by what magnitude can this be increased? ie. If a system is running at x rpm by what relation can the output be increased if the rotational speed is through the use of gears to 5x... 10x... etc. This may be vague but I am just wondering about the concept. Thanks!

There's a brief discussion about efficiency part-way down this wikipedia intro article:

http://en.wikipedia.org/wiki/Electrical_generator

.
 
Thanks for the response! The article was helpful but in re-reading my original post I realized I had worded it wrong. My question should have been: In a system with a predetermined output, and all variables remain constant, would simply increasing the rotational speed of the rotor (be it a conductor in a magnetic field or magnets in a conductive field) increase the output? I read in the article about the number of turns in the wiring being directly proportional to the output, but it did not mention the effect of rotational speed as it relates to output.
 
*All variables remain constant not taking into account the additional work applied to increase the rotational speed
 

Similar threads

  • · Replies 2 ·
Replies
2
Views
2K
  • · Replies 7 ·
Replies
7
Views
3K
  • · Replies 3 ·
Replies
3
Views
1K
  • · Replies 74 ·
3
Replies
74
Views
10K
  • · Replies 9 ·
Replies
9
Views
2K
  • · Replies 7 ·
Replies
7
Views
2K
  • · Replies 5 ·
Replies
5
Views
3K
Replies
9
Views
3K
  • · Replies 8 ·
Replies
8
Views
4K
  • · Replies 2 ·
Replies
2
Views
8K