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Rich
Starting Member
Spain
23 Posts |
 Posted - 20/12/2007 : 09:10:38
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Hi All,
It's been a while, but lifes other demands have been keeping me away from my aero-generator tinkering.
This is just a quick note praise of dump loads. I have a 6 bladed dyno-hub aerogenerator, which is terrribly sited, but can easily overload in the high winds we get at home.
As a way of braking the rotor, I connected a 12V, 10W halogen bulb to the output. Thi has put such a load on the roto (the cogging effect is hugely increased) that it hardly spins at all, although in very high winds it does spin, and lights the bulb quite effectively.
I imaging this is some back-emf effect - can anyone put me straight?
If anyone is having problems with spininng out of control, I can recommend a big brake load.
Cheers, and Happy Christmas to you all!
Rich
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gotwind
Forum Admin
United Kingdom
957 Posts |
Posted - 20/12/2007 : 20:41:45
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Hi Rich.
That is a solution, until the bulb fails, it is bound to at some point.
Better to connect to a battery and use one of Ghurds simple to build charge controllers. (Also a forum member here)
http://www.fieldlines.com/story/2007/9/3/18347/60207
Note: A dump load using an incandescent bulb was also used in the article above, but a more robust load can be used as Fungus did - a 12v ceramic heater I believe.
The Futures Green - Getwind of it. |
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Rich
Starting Member
Spain
23 Posts |
Posted - 21/12/2007 : 07:22:56
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Thanks for that, it could be just what I need. I have a battery just waiting to be charged, by as always tempus fugit...
Cheers,
Rich |
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Yay for brake loads
