Need help with wind turbine development

Renewable energies except solar electric or thermal (seeforums dedicated below): wind turbines, energy from the sea, hydraulic and hydroelectricity, biomass, biogas, deep geothermal energy ...
Mistralou83
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Registration: 22/09/09, 06:51
Location: Valletta of the Var

Les Pales, vast domain ....




by Mistralou83 » 22/09/09, 07:23

Hello
I am newly registered and thanks to one of your members.
My name is Jean Luc, and I am in Retirement - (Good thing) - I live in the Var, between Hyères and Toulon, on the hill, well exposed to the wind, but when it is there, our mistral…
Excellent discussions on the Forum Econology, on the blades of wind turbines, very rewarding. I take good note of your work and experiences. Congratulations to all.
And yes, darwenn (Excellent your videos on Youtube), for the time of the tests, the blades do not respond to any calculation or profile, but what works well.
But don't worry, the blades corresponding to the right criteria and profiles etc. are under construction (3), in wood (niangon) for the moment, then may have been in Carbon (a request for a quote in progress, for matter).
But, (again a but). Here is my video on Youtube, of my last Montage of a small wind turbine, entirely homemade. : http://www.youtube.com/watch?v=L50w5NxBGfg
Still blades with scabrous profiles, it's true… without calculation, but, I still paid a little more attention, even if temporary. : well tapered, tilted, shaped etc…. and judged by yourself at 8km / h on the video, I am already charging, so I also wonder, if I will change them. !! eh eh
Thank you for your comments and criticisms… ..It is through the latter, that I managed to mount this small wind turbine, corresponding well to my specifications, performance, weight, cost, size etc…
For the performances (150 to 180W) (although more than 12, 16 coils, it's also easy to do), I didn't want any more, just charge myself a good battery, from time to time, various charge for the Garden etc ..., and in parallel also with solar panels .. Because the mistral, does not blow every day .... and no, damage.
Good editing and studies to all - and see you soon for the continuation of the Aeolian adventure.

"Everyone knew it was impossible. There came a person who didn't know it and did it." Marcel Pagnol
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Jean Luc
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Former Oceano
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by Former Oceano » 22/09/09, 09:54

Hello and welcome Jean-Luc.
Bravo for your achievement (we can be familiar with it is more convenient) and for the video which is tutorial and contains a host of tips and tricks.
I loved the winding lap account with a calculator : Mrgreen:
When I saw you stick the magnets on the tray, I thought you could make a second tray of magnets behind and soon after you show that you did.
What is also interesting in your assembly is that it seems to produce at low speed and that one must be able to add plates to increase the power since the plate of rear magnets can re-magnetize another plate of coils and so after.

magnets tray
reel tray
magnets tray
reel tray
magnets tray

We can gradually increase the power of the wind turbine at a lower cost.

It remains to be seen below, in particular the resistance to the Mistral which easily points to us at over 110 km / h : Mrgreen:
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darwenn
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Registration: 16/07/09, 17:43
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by darwenn » 22/09/09, 13:22

Bravo for your wind turbine !!! I do not know what this kind of generator is worth but I see a lot of it made and it seems to work at very low speed because the requested torque is very low, but dependent? what does it give?

Beware of your wire, it may wrap around the mat and break, you should provide a carbon system or brushes that swivels.
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Woodcutter
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by Woodcutter » 22/09/09, 16:49

Okay, is it spinning?
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darwenn
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by darwenn » 22/09/09, 18:04

Well, here it is all over, it's going almost well, wind this afternoon from 20 to 30 km, it turned at very fast speed peaks giving me 19 volts when empty, but at full speed and 14 volts at the regulator output . But here it is, it is not constant, and despite all my efforts my conclusion is that because of my situation in the city center I will never catch a constant wind, and therefore my propeller will always stall. That said, it turned quite a bit all afternoon, even at low speed giving me an average voltage at the lowest of 7 volts. So here is what I am going to do, as it is the alternative, I will place a voltage tripler there, easy to do and in theory, lossless. But hey I have to see how to go from the three-phase alternative to the single-phase alternative :x This tripler will be cut by relays as soon as the wind turbine sends me as a tripler input, 14 volts. All placed before the regulator. In this way even at low speed I will have an average voltage of 18 volts at least, the regulator will do the rest. I tested, the diode bridge does not generate any brake, it is neither more nor less than a constant wind problem and this since my first tests, I am too badly located. I will be far from 1kw but what I would get should be enough I hope. Anyway when empty, I did not exceed 19 volts for a generator called 24v which when empty at full speed should give me 33. I will end up wondering if they did not crash and would have sold me a 12v for a 24v :x )

Okay, I'll see that with a tripler and I will see the return it will give me in the long term. Finally, next year, I may make a vertical axis wind turbine, easier to do and less stress, will remain to see the performance.

Here are the photos of this afternoon, the cone is a nice plastic pot for flowers :) it's for that little touch of fun : Cheesy:

Image

Image

Image
Last edited by darwenn the 22 / 09 / 09, 18: 54, 1 edited once.
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Alain G
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by Alain G » 22/09/09, 18:53

Hello Darwenn!

Nice work!!!!

I believe that the problem is visible in the last photo, you do not have the necessary height to properly capture the wind.

For the tripler, it's simple use only one phase, anyway you will not have a valid torque, you can leave your triple bridges in place and add the tripler with a diodes after the capacitor bank, it will work alone.
:D
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darwenn
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by darwenn » 22/09/09, 19:35

I am at 6m but I cannot go tall, I do not have the adequate mast nor the place, it would not be reassuring for the neighborhood I fear. So for the height I made the best compromise. If I really wanted to climb higher to capture a constant wind, I think I would have to climb to 30 meters given the context where I am. I will follow your advice to use only one phase for the tripler, thank you : Cheesy: but I don't quite get it when you say "you can leave your triple bridges in place and add the tripler with a diode after the capacitor bank" which bank of capacitors?
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Mistralou83
I discovered econologic
I discovered econologic
posts: 3
Registration: 22/09/09, 06:51
Location: Valletta of the Var

Wind turbine video suite




by Mistralou83 » 25/09/09, 14:18

Hello Hello Friends of Forum

Thank you for your little words…
For Former Oceano , well seen, for the addition of stator and rotors, I have already seen this kind of assembly. Indeed very effective.
But also do the same for the power, by increasing the number of coils on the stator. So my next goal: 12 coils, 2 X 16 magnets for 24 Volts, to follow.
For the strength of the Mistral, it is true that with us, when it is well installed, it blows a lot, but I added for that, a Braking switch , wind turbine stop switch, 3-circuit circuit ... No problem, it does not burn anything, but considerably slows down the wind turbine, or even the complete stop.
For Darween , yes this kind of discoid generator, looks, extremely efficient .. As I said above, I will attack the mounting of a third, to certainly consider it for a vertical axis wind turbine of the Savonius type.
For my load tests, (see video) I continue my readings… Good on average 180 Watts….
Yes, thank you for the info from the thread coming out of the Stator, it was just for the tests, since then, it's resolved, thank you again.
Oh yes then, Nice work, Darwenn, I love it, very professional, congratulations.
Ah yes, for the condos, oh oh, big important after the rectifiers, on my side, I placed one of 33000uF (it's a big one) also a self (smoothing and filtering of the DC voltage). This is what I did, when mounting my stabilized power supplies of 30 Amps and more (Amateur Radio)
Okay, is it spinning? And yes, really not bad and to see, how much the wind turbine starts, I had fun (just for fun) to place on the Rotor AR and the Stator, the speed sensors of a Bike Odometer, ( well fixed and glued with epoxy)
It works really well, it allows me, of course to see the Kilometric speed of the wind turbine. (What's the point? I know nothing, but hey, it's fun and it's nothing to do)
The hard part is to find a bike computer, which accepts programming of small circumference, but we find some. So I did comparison tests in Km / H with an anemometer, and on the bike computer (on the mast) it starts with a wind of 2Km / H, I said, it starts.
Here for today, I continue my DIY, preparation installation of Shunt regulator (winding in 2mm Kanthal wire on ceramic support (also homemade) in threaded shape) and Schottky diode (thank you André)
Good day to all and see you soon for the continuation of our Aeolian Adventures.
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Jean Luc
darwenn
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by darwenn » 27/09/09, 08:29

Very interesting, but the condo of 33000uf you place it in parallel at the exit of the bridge then? ok i will try that.

Precisely I wanted to ask the question of the short circuit of the phases in case of too strong wind (in addition to my feathering which works well), is there really any risk for the generator? I had read that it could damage it, I would like to be sure before planning this system.

I too will consider building a vertical soapius soon, with a disc PMG.
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manoria68
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by manoria68 » 02/10/09, 17:37

Hello,
Little question,
how much energy can the wind turbine recover in 1 year?
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