Electricity generator theory question

[elitt222333]

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!

 

[berkeman]

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

.

 

[elitt222333]

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.

 

[elitt222333]

*All variables remain constant not taking into account the additional work applied to increase the rotational speed

 

[sardar]

I can provide some insights into the factors that influence a generator's output and how the rotational speed of the magnets can affect it.

First, the efficiency of a generator is determined by several factors, including the design of the generator, the type of fuel used, and the operating conditions. Generally, a more efficient generator will have a higher output for the same amount of input energy.

The rotational speed of the magnets does play a role in the output of a generator. This is because the rotational speed determines the frequency of the alternating current (AC) produced by the generator. The higher the rotational speed, the higher the frequency of the AC produced. This can lead to a higher output, as higher frequencies typically mean more energy is being produced.

However, it's important to note that increasing the rotational speed does not necessarily lead to a linear increase in output. This is because there are other factors at play, such as the strength of the magnetic field and the design of the generator. In fact, there is a limit to how much the output can be increased by increasing the rotational speed. Beyond a certain point, the generator may not be able to handle the increased speed and may start to malfunction.

To answer the specific question about the magnitude of increase in output, it is difficult to provide a precise relation without knowing the specific details of the system. However, in general, increasing the rotational speed through the use of gears can lead to a significant increase in output, but there are limitations to how much the output can be increased.

In conclusion, the rotational speed of magnets does influence the output of a generator, but there are other factors that also play a role. The exact relationship between rotational speed and output will depend on the specific design and operating conditions of the generator.