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An Alternate PM Alternator Design
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50
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Re: An Alternate PM Alternator Design
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by finnsawyer on Sat Apr 22nd, 2006 at 10:08:27 AM MST
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User Info
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Possibly low cogging (see the other comment). There is no limit on the size of the coils. For instance, a one inch diameter magnet could have a three inch diameter coil around it with a one inch diameter center hole. Just scale the rotor accordingly. Because of the upward opening power curve for the center tapped version, which more closely follows the wind power curve, it may be possible to have better low speed performance as well as reasonable higher speed performance. See Flux's recent comments in that regard. By using two six volt batteries with the center tapped version instead of one twelve volt battery, one can cut the cut-in speed almost in half. And of course, you're using fewer magnets, though likely with more copper, which might reduce the overall cost. I guess this really isn't a 'nutshell' explanation, but then considering the complex issues involved, there probably isn't one.
GeoM
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An Alternate PM Alternator Design
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50
comments (50 topical, 0 editorial)
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