Group Information- Members: 2038
- Category: Energy
- Founded: Jun 4, 2006
- Language: English
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Description
This group is dedicated to the Axial Flux Permanent Magnet Alternator, as designed by Hugh Piggott, with additional development by Dan Fink and Dan Bartmann of Otherpower, Steve Spence of Green-Trust and Jim Juczak of Woodhenge. This alternator uses rotating magnets and a fixed stator with handwound 3 phase coils. This design is applicable to wind, water, engine, even human and animal power. Details can be found in January - August 2005 issues of Back Home Magazine, and in Hugh's PMG construction document. Additional info can also be found in ESSN Magazine. See the links section for details on the wind turbine we built using this design.
December 17th, 2007, Green-Trust and Woodhenge were showcased on The Science Channel's "Invention Nation" TV series, building their Axial Flux Wind Turbine (http://www.green-trust.org/2007/12/green-trust-and-woodhengeorg-on.html).
Join us in the development of this technology, and find better, cheaper ways to make your own power. |
Re: are these magnets a good buy
Your flux will increase with thickness, so stacking magnets will increase the force. Some incidental losses may occur, they they will be very minor. Intermag
Posted - Wed Jul 8, 2009 12:49 pm
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offlogic
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Memphis, TN Area
If there is anyone in Memphis area planning or constructing the alternators, I would like to observe the construction and hear about the planning.
Posted - Thu Jul 2, 2009 1:42 pm
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gardennut69
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Re: are these magnets a good buy
I do not know. Steve Spence Renewable energy and self sufficiency http://www.green-trust.org http://makingthewebwork.blogspot.com/
Posted - Wed Jul 1, 2009 5:20 pm
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Steve Spence
sspence65
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Posted - Wed Jul 1, 2009 5:09 pm
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rolando_elizondo
rolando_eliz...
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Re: are these magnets a good buy
ceramics will have greatly reduced output. a 500 to 1000 watt turbine should have neodymium's, grade n40+, approximately 2" x 1" x .5" or so. Steve Spence
Posted - Wed Jul 1, 2009 1:56 am
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Steve Spence
sspence65
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