ForgivenCreation
New Member
Howdy yall! Was wondering if I could get your opinions on this little Dayton permanent magnet DC motor for a wind turbine. What output can I expect, what blade type. All that stuff.
Mini Dayton DC Motor for Wind Turbine project?
- Thread starter ForgivenCreation
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OzSolar
Whatever you did, that's what you planned.
You'll probably get more usable responses on https://www.fieldlines.com/. Lots folks trying to home build wind turbines there.
Hogheavenfarm
Regulation Stifles Innovation
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It would work of course, the question is how much usable output you would get. Also need a way to overdrive it to reach the rpms it states, pulleys I would guess. lot of work but may be a fun little project. I have an old dremel motor I will probably play with for the same reason, fun and a bit of learning.
ForgivenCreation
New Member
Anyone know the rpm that is normally reached in mild wind conditions? Also a blade design as well.
RussNM
Solar Enthusiast
The higher the motor is voltage wise the more apt you are to actually get some usable wattage. So a 120v dc treadmill motor will spin in a 15mph wind and produce around 20v. Also rpm rating... higher is better IIRC.
Hogheavenfarm
Regulation Stifles Innovation
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thats true, but a turbine spinning even at 1750 rpm is a very dangerous thing. RPM would be a function of blade diameter, my 60" diam at 250 rpm makes me want to stay far away from it. It was designed to operate in the 60-120 rpm zone.
efficientPV
Solar Addict
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300rpm sticks in my mind. (300/1750) X 12V = bad decision.
Hedges
I See Electromagnetic Fields!
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A "drag" device (anemometer) will move something below wind velocity.
RPM depends on diameter.
A "lift" device (airfoil) can move many times the wind speed.
But it requires laminar flow; turbulence causes it to stall, therefore needs to be high above the ground.
You can find plenty of graphs of theoretical maximum and reasonably achieved power vs. wind speed for a given swept area of airfoil.
RussNM
Solar Enthusiast
Right. This is what I was getting at... so higher rpm should produce higher voltage. Larger blades will produce the torque needed for current.
And the higher up on a tower the better.
OzSolar
Whatever you did, that's what you planned.
RPM? Blade design?
Aerodynamics engineers barely scratch the surface of airfoil design until they get into a masters program. It's 2 years of schooling just to learn to use the software to design blades. In other words, you may have to do some more Googling.
Here's a few links to get you started.
Home / About the project
About Wind Energy - The Facts Wind Energy - The Facts (WindFacts) was a European project financed by the Intelligent Energy - Europe programme of the Executive Agency for Competitiveness and Innovation that ran from November 2007 to October 2009.The 'Wind Energy – The Facts' publication is wi
www.wind-energy-the-facts.org
ForgivenCreation
New Member
By blade design I mean like the giant wind turbine blades style, the upright mounted style. I was just wondering what style would be best to look for off of one of those 3d printer cad sites. Also I would like to make it portable for my old truck camper, might be kind of cool along with my solar. Thank yall for the replies as well! I did spin it up with a Dewalt drill briefly and it quickly put out above 6 amps but only like 3-4 volts I believe, this was just with the multimeter connected.
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