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 ...
darwenn
I posted 500 messages!
I posted 500 messages!
posts: 510
Registration: 16/07/09, 17:43
x 9




by darwenn » 03/10/09, 10:09

My verdict on my wind turbine. After a test time, it will be dismantled and the gear sold. The conclusion is that I am too badly exposed. The wind turbine works perfectly in high winds but the performance is too poor due to windy disturbances due to my situation. The fact of mounting it on voltage tripler at low speed works but I only triple the voltage and not the amperage so important for charging a battery. That is to say that I reach the top speed in amperage too rarely (10 amps max) without tripler, but at low speed, even if I get 20 volts with the tripler, not being at its chargen speed normal, so I have 0 amps so I charge that slab.

Here is the verdict, I tried, I spent some time there but I cannot operate a wind turbine on my property, so I will probably go solar :) : Cheesy: anyway thank you to everyone who helped me.
0 x
darwenn
I posted 500 messages!
I posted 500 messages!
posts: 510
Registration: 16/07/09, 17:43
x 9




by darwenn » 03/10/09, 13:30

Here is a video taken this morning, with gusts at 70kmh we can see the feathering in action. From voltage peaks to 27 volts (before the regulator) and 13 amps at load. When the generator sends the amps, a thud is heard, a "Vooooouuu" :). The battery is charging well, but frankly the wind of this speed here is too rare, so not enough performance, I abandon the wind turbine in favor of solar. In the meantime I will charge the battery at night during reduced EDF hours thanks to a conventional battery charger. The UPS will operate during the day and will be charged at night. The 3,6 amp charger for 75 watts of consumption.

http://www.youtube.com/watch?v=UGZ65RfQb1Y
0 x
Alain G
Econologue expert
Econologue expert
posts: 3044
Registration: 03/10/08, 04:24
x 3




by Alain G » 03/10/09, 14:48

Hi Darwenn!

Too bad because you have so much work on this project, it seems to be feathered a little too quickly, it can be because of the pivot of the mast too offset.

Put it for sale on the site may be that a member would be interested in acquiring it.
:?
0 x
Stepping behind sometimes can strengthen friendship.
Criticism is good if added to some compliments.
Alain
darwenn
I posted 500 messages!
I posted 500 messages!
posts: 510
Registration: 16/07/09, 17:43
x 9




by darwenn » 03/10/09, 16:15

Feathering is rare because the dropout problem occurs even when feathering is not working. So yes, we could have supposed an improperly adjusted feathering (spring too flexible) but that is not the cause of the problem. No I just don't have the chance to be well exposed and I am subject to shutters which disturb the orientation and the sufficient winds are too rare. I will see for sale here or on leboncoin.fr the generator is powerful, new and still guaranteed, and I will also sell with the set, finally I will see that in due time, I will wait a little longer to be good on, because autumn is coming and the wind too, so I'll wait.
0 x
darwenn
I posted 500 messages!
I posted 500 messages!
posts: 510
Registration: 16/07/09, 17:43
x 9




by darwenn » 04/10/09, 13:07

A question in passing. With a DC motor like the one I used (the 24v 270w electric scooter motor), does about 10 amps happen the same thing? does that mean that all the power would only be delivered at the nominal speed of rotation? In fact for example with my 24v generator it seems impossible to obtain 12volts at half rotation speed with power, because at 12v I have 0 amps, all the power is sent later during a maximum rotation. I thought it was proportional but no, we only produce at a certain minimum point bar speed and half the speed of production rotation and well we do not have half the energy, in tension yes, but not in power. And I was wondering if with a 24v DC motor I would have exactly the same phenomenon as with the generator, would there be this same priming only at a certain speed?
0 x
Alain G
Econologue expert
Econologue expert
posts: 3044
Registration: 03/10/08, 04:24
x 3




by Alain G » 04/10/09, 16:21

darwenn wrote:A question in passing. With a DC motor like the one I used (the 24v 270w electric scooter motor), does about 10 amps happen the same thing? does that mean that all the power would only be delivered at the nominal speed of rotation? In fact for example with my 24v generator it seems impossible to obtain 12volts at half rotation speed with power, because at 12v I have 0 amps, all the power is sent later during a maximum rotation. I thought it was proportional but no, we only produce at a certain minimum point bar speed and half the speed of production rotation and well we do not have half the energy, in tension yes, but not in power. And I was wondering if with a 24v DC motor I would have exactly the same phenomenon as with the generator, would there be this same priming only at a certain speed?


Hi Darwenn!

Surely you will have the same phenomenon which is due to the torque recovered by the propeller which is not powerful enough and brakes at a certain speed when there is start of production.
:D
0 x
Stepping behind sometimes can strengthen friendship.

Criticism is good if added to some compliments.

Alain
darwenn
I posted 500 messages!
I posted 500 messages!
posts: 510
Registration: 16/07/09, 17:43
x 9




by darwenn » 04/10/09, 16:59

no I do not think that the propeller lacks torque and that this is what causes it to slow down during priming, because there it is launched at full speed and seems to rotate perfectly once primed, which makes it slow down c 'is the wind which is disturbed or simply has dropped (not constant) because the same thing occurs at rotational speed below that of priming. What I wanted to know is if with a DC motor, if I was also going to have a priming speed necessary to reach or if the power production was going to be progressive from an average rotation, in short to have amps without having to reach a tripping speed (as is the case with my purchased generator or an alternator which produces power, finally intensity, only after ignition)
0 x
Alain G
Econologue expert
Econologue expert
posts: 3044
Registration: 03/10/08, 04:24
x 3




by Alain G » 04/10/09, 18:05

Hi Darwenn!

It is difficult to answer without RPM and wind speed data, but you may be a better result.

Usually you reach the production start threshold as soon as the voltage is reached and the amperage increases but not proportional to the speed of the blades, so the rotation of the blades is not proportional to the production and will not increase much in turn for greater production.
:D
0 x
Stepping behind sometimes can strengthen friendship.

Criticism is good if added to some compliments.

Alain
darwenn
I posted 500 messages!
I posted 500 messages!
posts: 510
Registration: 16/07/09, 17:43
x 9




by darwenn » 05/10/09, 17:35

Well apparently my concern is my regulator. It is necessary that the wind turbine turns like crazy to hope to be able to produce, I removed my regulator produced according to a plan on the net, and which seemed to work well, and put in the place for tests my solar regulator and there there is no photo, it worked better immediately, good charging power on the battery and at a much lower speed. So I'm going to look for another regulator. If someone can advise me a cheap one, I am interested.
0 x
Alain G
Econologue expert
Econologue expert
posts: 3044
Registration: 03/10/08, 04:24
x 3




by Alain G » 05/10/09, 18:18

darwenn wrote:Well apparently my concern is my regulator. It is necessary that the wind turbine turns like crazy to hope to be able to produce, I removed my regulator produced according to a plan on the net, and which seemed to work well, and put in the place for tests my solar regulator and there there is no photo, it worked better immediately, good charging power on the battery and at a much lower speed. So I'm going to look for another regulator. If someone can advise me a cheap one, I am interested.


Good evening Daerwenn!

Glad to learn it, because I could hardly believe that all the work you have done so far has not produced any results, even with wind problems.
:D
0 x
Stepping behind sometimes can strengthen friendship.

Criticism is good if added to some compliments.

Alain

 


  • Similar topics
    Replies
    views
    Last message

Back to "hydraulic, wind, geothermal, marine energy, biogas ..."

Who is online ?

Users browsing this forum : Google Adsense [Bot] and 227 guests