Calculating Kg Force for Generating 1 Watt of EMF in Magnetic Generators

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SUMMARY

This discussion focuses on calculating the kg force required to generate 1 watt of electromagnetic force (EMF) in magnetic generators. The relationship between power, torque, and speed is emphasized, with the formula Power = Torque x Speed being central to the calculations. The efficiency of the generator design, including the number of windings and turns, significantly influences the torque needed to achieve the desired output. The user seeks clarification on these variables to determine the exact kg force necessary for their specific generator design.

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  • Understanding of electromagnetic force (EMF) principles
  • Familiarity with torque and its calculation
  • Knowledge of generator design and efficiency factors
  • Basic grasp of power equations in physics
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barendfaber
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Hi,

I wonder if someone can help me. Looking at magnetic generators, we spin the magnets around which will induce an EMF. This EMF will create a magnetic field opposite that of the magnets, thereby creating a drag. If I had to generate 1 watt for 1 second, how much kg force will I need to spin the magnets forward for that second?
 
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It depends on the design of the generator, of course, how many windings you have, how many turns each, etc.

Assuming 100% efficiency, power in = power out, and Power=torque X speed...so, depending how fast you want to spin the generator, the torque needed may vary to achieve the 1W output that you want.

In any case, you may benefit from reading http://en.wikipedia.org/wiki/Torque" .
 
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I'm fairly new to all of of this, been a good few years since I was in school, so most of this I have already forgotten. I am waiting for another post to be answered, which will help me to determine most of the detail above, I will be back once I know more.
 

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