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How do I decide what size motor to use as a generator?

dbyrd26

Sep 16, 2013
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Sep 16, 2013
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I'm currently prototyping a sort of wind turbine project and I'm trying to figure out what size motor to use to get x amount of volts. I'm wanting to make a small scale one first before trying a large one. What I'm aiming for as of now is only about 1.5-3 volts. Is there any type of equation to figure this out? Like with rpms and voltage of motor being used etc.?
 

BobK

Jan 5, 2010
7,682
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Jan 5, 2010
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7,682
You specification is incomplete. You need to know both the current and the voltage. The voltage out of a generator will be high with no load and drop with a load (i.e. current).

I am not an expert, but I think the place to start would be to choose a motor whose voltage and current are somewhat above what you want to generate.

Bob
 
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