Build a wind turbine

Renewable energies except solar electric or thermal (seeforums dedicated below): wind turbines, energy from the sea, hydraulic and hydroelectricity, biomass, biogas, deep geothermal energy ...
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antoinet111
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by antoinet111 » 11/12/11, 21:58

did you learn everything about newton before learning to ride a bike?
sometimes it is possible to run before knowing how to walk.
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I vote for the writing of concrete post and practicality.
Down the talkers and ceiling fans!
dedeleco
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by dedeleco » 11/12/11, 22:55

Babies sometimes do this, as one of my grandchildren:
possible to run before knowing how to walk

and break the face without damage, given their small size.

Otherwise the Romans did not invent the alternator wind turbine, before we understand the electromagnetism, and still, it took 50 years between the discovery of induction 1830 and 1880 to see the first alternators.

So putting the cart before the horse, is rarely effective.
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hurl22
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by hurl22 » 17/12/11, 08:56

Hello...

I understood ... in fact, Dedeleco, you wouldn't be the site's killjoy? Kind of "moderator" but in a "dark side of the Force" version?

Seriously, who do you think you're helping by making this talk? You intervene a lot of times, you are right, but your side "I know everything, I know everything, you know nothing ...."
If you know, answer the questions instead of balancing your science ...
Tam20 will not get up tomorrow, buy 1000 euros of gear without inquiring! And there, he comes to inquire and you do not help with everything ...
You who know everything, can you answer him? Because that helps people ...
Good day to all
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hurl22
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by hurl22 » 17/12/11, 09:00

Specifically Tam20, for the equipment behind the wind turbine, you want to stay in 12V or go to 220V?
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dedeleco
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by dedeleco » 17/12/11, 22:17

antoinett111 replied:
something else, an alternator gives over 12v, it's not a concern for the battery. until you send him 15 or 16v.

but it is better to know the characteristics of the battery and the alternator (with its output rectifier, because the batteries only want the direct current and not alternator of the laternator), to know if they are compatible in voltage, in max current and internal resistances !!

The alternator has a no-load voltage which decreases by current flow proportional to its internal resistance so that the output voltage is equal to that of this vacuum battery plus the voltage of the current in the internal resistance of the batteries.
This resulting current must not exceed the maximum allowable current of the battery (nor also in the alternator).
It is much longer to write than to check in reality with some simple calculations if we know a minimum.
Sometimes we are also measuring these internal resistance.
Also, a problem is that the output voltage of the alternator with rectifier, varies depending on the wind and should be cut, if the wind decreases too much, to avoid discharging the battery in the alternator.

So you have to have a clear idea of ​​the precise assembly, the regulator (if it is simplistic diode or sophisticated, with the alternator), etc.
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tam20
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by tam20 » 19/12/11, 17:52

I would like to put myself on a car battery 22v and then to distribute it with a converter of tenssion 12v / 220w.
thank you for your brave answer !!! :-)
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hurl22
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by hurl22 » 19/12/11, 18:30

Well, from a simple point of view, the use of an alternator to use 12V is:
the diode bridge allows to have a correct current for a battery (it's done for ...)
The converter allows a lot of things behind it.

Two problem then arises:

The power required according to the consumption of 220.
And the problem of alternators that, if they are not permanent magnets, consume current before producing.

you must know according to your alternator, the speed at which it must turn and deduce the speed of your wind turbine and therefore, if that will be enough for your conso ...
Are you interested in alternator "rewinding" or in modifying it to make a permanent magnet alternator ...

I give you only clues because I am studying (and yes dedeleco ...) the subject ...

What type of wind turbine is it? Construction house or recycle bodon metal ...
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tam20
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by tam20 » 23/12/11, 12:56

I build homes but without being too expensive and it is a vertical axis.
thank you for all your information!
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