1500 W wind problem 24VDC

[Ruthenian]

the inverter a masspower 300G-WDL 10.8V 30 V DC.

What do you think of this machine:
http://www.gudcraftonline.com/ProductDetails.asp?ProductCode=WG700%5F24V

[Forhorse]

Up to what maximum wind speed does it resist?

[Ruthenian]

I don't have this info.

[Forhorse]

it's not a very good sign, right?
for me that means that there have never been wind tunnel tests and therefore that the power curve is only theoretical and / or interpolated.

[Ruthenian]

It is very complicated to get info in this area.
It comes from China, some components come from Taiwan.
When we ask for more info we have no answer.
I asked if I could have the name of the manufacturer but I didn't get an answer !!!
...

[Ruthenian]

They answer me next Wednesday.

[dedeleco]

I do not see why this low speed wind turbine 9Km / h to 40Km / h (where it stops) would do better than the first of this forum.

Very little info: none on the speed of rotation of the blades, hardly above the wind speed at the blade tip (??) and therefore 1 to 2 turns per second at 10 t / s probably.

At these rotational speeds the alternator seems to me to be too small to give this power 700W with 24V, because the voltage in the windings increases like the speed of the magnets and therefore too low speed (linked to the diameter of the rotor too) implies low voltages and low power in fact, as for the first wind turbine.
I find it hard to understand how they do it without gears to speed up the alternator!
I would tend to ask how they do it ???
Without a clear credible scientific answer (article references), I would very much doubt.

No detailed info on the CD 2.5 controller recommended, charged battery (plpmb ?? different from other batteries), input voltage less than 24V, currents ???, conversion and regulation mode, efficiency, etc ...
An essential point is to ability to read instructions in .pdf mounting, operation, errors not to do, detailed specifications, etc.
Without being able to read the instructions before, I never buy a technological device !!!

Even less confidence, they sell discount with less info than for hotcakes !!!

[Ruthenian]

Hello;

They sent me the installaton manual.

There's not too much:
be able to read the assembly instructions in .pdf => I have this
operation => I don't have
mistakes not to make => I have nothing special
detailed specifications => Not much see below
etc ..

Nominal power 500 W at 10 M / s
Max power 700 W
Start speed 2 m / s !!!
Rotational speed at nominal 700 rpm
Generator weight => 9 kg
Diameter 1.7 meters
Number of blades 3
FRP blade materials (?)
weight of one or more blades 2.5 kg

If you have good addresses, I am interested.

I found other alternators but you have cooled me down a bit.


http://www.ebay.com/itm/24V-1KW-Permanent-Magnet-Generator-PMG-Wind-Turbine-/250845090606?pt=UK_Gadgets&hash=item3a6788532e

To which we must add everything else.

[dedeleco]

Some reactions to read thoroughly:
It looks more serious the material on ebay manufactured by
http://www.futurenergy.co.uk/turbine.html
It is that of Forhorse:
https://www.econologie.com/forums/avis-sur-e ... 10153.html
Wait for it to work !!!

Ask Obélix !!
https://www.econologie.com/forums/post183343.html#183343
https://www.econologie.com/forums/vends-gene ... t8569.html
Ask Christophe if he has wind in the blades ???
https://www.econologie.com/forums/post144894.html#144894
A French opinion on this wind turbine:
http://www.chaleurterre.com/forum/viewsujet.php?t=7901
https://www.econologie.com/forums/premiers-t ... 94-30.html

and also especially see looping the specialist:
https://www.econologie.com/forums/post114302.html#114302
https://www.econologie.com/forums/alternateu ... t4674.html
http://www.windstuffnow.com/main/alt_from_scratch.htm
To potash:
http://www.windstuffnow.com/main/
http://www.windstuffnow.com/main/links.htm

https://www.econologie.com/forums/post68318.html#68318
Its wing profile has a shape and a variable angle with the distance to the axis to take into account the speed of the blades variable with the distance to the axis (relative wind effect which changes the angle of incidence)? ??
A propeller is very complex, more than an airplane wing, especially if the tip of the blades goes faster than the wind !!!
To check on the propellers in low wind, because crucial, otherwise the tip of the blades brakes fully and no power !!!!.
https://www.econologie.com/forums/post76436.html#76436
https://www.econologie.com/forums/post78311.html#78311

http://www.applegate.co.uk/all-industry ... 377070.htm
http://energistar.com/
http://energistar.com/FE%20Upwind%20Ass ... tr%202.pdf
You have to ask for French user names (and not only UK) to see them and ask for their practical advice.
In any case, ask Greenpeace what they think about it ???
http://www.all-energy.co.uk/userfiles/f ... gy0408.pdf
http://www.pressbox.com/detailed/Techno ... 76451.html

They claim that it survives 180Km / h (50m / s) !!
and that's true !!
http://www.chaleurterre.com/forum/viewt ... 186#105186

They have provided a very good static balancing (balancing !!) against noise, especially if you add a little dynamic balancing.

England is not too far away and if you are not happy, you can go protest at the manufacturer Futurenergy Ltd
Ettington Park
Stratford-upon-Avon,
Warwickshire
CV37 8BT
United Kingdom
150Km North West London !!!! between Birmingham and Oxford !!

even for underwater:
http://www.pressbox.co.uk/cgi-bin/links ... index.html

Finally a nice list of possible suppliers:
http://www.southwestwindpower.eu/products/

http://smartenergyconcepts.com/?p=254

http://www.therenewableenergycentre.co. ... suppliers/


French (rare):
http://www.ecologie-shop.com/search?fil ... %A9olienne
http://weole-energy.com/product2.php?id=8
http://www.eoltec.com/

[Forhorse]

Mine is unfortunately still in its box. The guarantee will be passed that it will not have made a turn yet

I'm still missing the mat, and since I'm planning to move soon I'm more and more reluctant to install it.