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Homemade Wind Turbine Tutorial - Looks good?

 
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Hi all,

Has anyone had a try of building a wind turbine using a car alternator as per this one:

https://www.instructables.com/id/How-I-built-an-electricity-producing-wind-turbine/

Looks like it would be good, but was hoping someone's who's got some experience can verify that it looks functional, or perhaps suggest a plan that they've used before.

Any help would be great

 
gardener
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Location: latitude 47 N.W. montana zone 6A
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Hi Russell;  Interesting read, thanks for sharing!
He is not using a car alternator though. A 30 volt permanent magnet motor instead.
He never mentions how many amps / volts his setup produces at the battery ,but its still way cool.
I suspect that his tower may need improvement if it becomes a permanent installation, but as a portable camping setup its outstanding!
For a few hundred bucks its a standalone power system !
I Like It !
 
pollinator
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treadmills are supposed to be a good source for DC motors. 90 volts I think.
 
pollinator
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If you watch the video to the end you will notice he is using a solar panel to also charge his batteries. That encapsulates well what happened to all the small wind applications. His 30-50 watt solar panel will outproduce that wind turbine probably to the tune of 300-500 percent in 90 percent of locations. meaning in that setup the solar panel with no moving parts does 60-80 percent of the work... At the very end of the video you see the unit spinning. based on experience I can tell you his production there is about 10-30 watts per hour based on blade speed and blade diameter. So you have to evaluate your site carefully. If you have a steady strong wind without obstructions and can get the turbine 20 ft above said obstructions then small wind might be for you. from the looks of it he is using a repurposed electric motor functioning as a PMA. As mentioned above treadmills are the best source of them. the unit will usually top out at about 100 watts in a gail forced wind though unless you use an expensive charge controller for it. So 100 watts of solar for less then $200 on the ground, guaranteed to give you 2-6 hours a day of production everyday or a turbine in the air harvesting an unknown quantity needing maintenance... Wind is very much site and user specific.
Best regards,  David
 
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That thing likely blew apart in the first storm because there is no mechanism for governing the speed that they spin at. Many designs include a mechanism that changes the blade angle based on the centrifugal force so the faster it spins, the less turning force the blades create.
 
pioneer
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Nick Kitchener wrote:That thing likely blew apart in the first storm because there is no mechanism for governing the speed that they spin at. Many designs include a mechanism that changes the blade angle based on the centrifugal force so the faster it spins, the less turning force the blades create.



He has actually been using it for a number of years now.  On his site he talks about a storm with 50 mph winds that broke some of the fins, and the mods he created to fix it.  The last update was 2012 I believe, and that is at least 5 years after he built it.  I believe he built it for $140. Not bad I thought.
 
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That simple turbine sounds perfect for his use in that windy site. He does not need a lot of power and can take it down when done with it. So it won’t get damaged by being left unattended. Or stolen. I want one for my travels to remote places. And a hydro turbine lol.
 
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