| T O P I C R E V I E W |
| gotwind |
Posted - 31/01/2008 : 16:11:14
Has anyone started there wind turbines project yet?
Or has the weather been against you.
Ben. |
| 15 L A T E S T R E P L I E S (Newest First) |
| chris_psmith |
Posted - 03/02/2008 : 14:40:21
I would of thought so, no idea what shipping would be as they are heavy:
http://www.futurenergy.co.uk/products.html
Chris |
| litespeed |
Posted - 03/02/2008 : 14:35:29
Are these gen's available in the U.S.? That looks alot like TLG's. I have not seen "just the generator" (that generator) available anywhere over here.
These things look great! Much better than my feeble project.
AJ
Sebastian, FL
Wind gen. in progress |
| Del |
Posted - 03/02/2008 : 11:00:30
Hi Donnie,
You might want to edit your post so the pictures are on top of each other and not alongside each other.
I think the reason you maxed out your rpm even in the severe gales you had may just be down to the blades you're using. They're the Air-X type aren't they? Super fast but you don't need super fast with the futurenergy PMG, you need torque. The Futurenergy data they have on their site is that for the 24v unit (I think that's what you have isn't it) 490rpm will give 34 amps with a battery voltage of 33.6 (seems very high for a 24v bank set-up) so 1142 watts. So mega spped you don't need but you do need blades that will be meaty enough to turn the unit at 30+ amps which must be a heck of a turning resistance and is probably why Futurenergy use their chunky multi blade set-up. In short, I reckon you need more torque mate so either modify what you have or come up with something else.
Keep us all posted mate
Cheers
Del. |
| donniedingle |
Posted - 02/02/2008 : 00:27:01
as promised just a few photos of progress.
well i used what materials i had laying about, i discovered a hinge off a 5 barred gate, opened up a bit was a good tight fit on the alternator shaft, i just drilled the hinge assy and put 3 x 3/8" bolts to pinch it up around the shaft, then welded it along side a mounting i made from angle iron. made a furling tail assy, and the blades......well i had an eight bladed hub led in the shed, so i bolted the blades from my bee wind pmg onto it, these are the blades i had cut down by 8" to reduce the noise from them, So up on the roof she went and wowwww, just a wee breeze and she was away, great eh!!. that night we had gales forecast so i kept going out to check on it, but the rpm never increased, and boy did we have gales, 75mph recorded at wick airport that night, but my genny never increased in speed, a check on output showed i was getting a steady 14A, and this was keeping my batteries at a steady 14.3V, but no matter how hard the wind gusted the turbine never increased its rpm. just a low and steady whine, dam its so quiet. question is ... do i increase the blade area at the tip by laying a metal blade over the top of it of a larger width (the blades i'm using are those high speed blades,with the thin tips) and say just fit these wider blades to 4 of the blades? and as for the furling its not needed, in fact it never worked in the gales ..lol. all ideas and comments appreciatted guys.
best regards donnie.
just keep her spinning.. |
| bs85 |
Posted - 01/02/2008 : 19:37:28
Chris,
They are futurenergy's 6' blades
Brian |
| chris_psmith |
Posted - 01/02/2008 : 19:17:45
Brian, what diameter of blades have you got to be getting 1kw? |
| chris_psmith |
Posted - 01/02/2008 : 19:02:24
Ben, It is my home built garage extension, 3 guy wires fitted that seem to stop a lot of the movement, but lots of twist, just put a brace bar on the bottom against the garage wall, seems better.
Del, fitted a cycle computer, if my maths is correct, i put in a circumference of 167cm wich i think means 10rpm for every 1km/h. If thats right then I am doing about 300rpm at the moment, the wind has just picked up, so make or brake on my welding this evening!
Chris |
| bs85 |
Posted - 31/01/2008 : 22:50:57
Well i decided to take my turbine down seeing that there is some higher winds forecast later on.
919.4w 31.65a peek, defiantly need a turbine that furls in these kind of winds.
Brian |
| gotwind |
Posted - 31/01/2008 : 22:25:51
chris_psmith.
In regard to your VAWT's rigidity, you could also guy wire from the top of the turbine, 3 off.
From the image above, it looks like a bungalow - I maybe wrong?
Maybe one from the roof's chimney if it is stable?, it could be fixed i.e a piece of wood or steel bar, and two wire guys from the ground.
Just a thought - If the wife agrees of course...
Ben.
|
| Victor |
Posted - 31/01/2008 : 21:40:01
My best performing Turbine for 2007 was edh-1 using 6 blades.However I have a dynohub up at the moment with 4 shorter blades as my winter turbine as it can handle wind speeds of 40mph.
Hope to have a hybrid system and a few ameteks up and running in spring.
However the more specific magnet motors folks are using I`d like to know what sort of voltage and current they are getting from them? I know it will be far in excess of my micro turbine,but maybe the future energy alternators are the way ahead?????
 |
| gotwind |
Posted - 31/01/2008 : 20:34:24
All looking great guys - nice to see where everyone is at.
Getting good wind here tonight 25 mph, the little axial flux is charging a good 2 amps into my 12v sla (sealed lead acid) battery.
The air core design, such as this one really makes a difference in low wind speeds - no cogging, it never stops spinning.
An old photo below, it is actually mounted at 12 ft at the moment.
Not a huge a mount of power, however I have plans to get a 1.5 Kw renewable energy system up and running this year, (wind and solar power).
Ben. |
| chris_psmith |
Posted - 31/01/2008 : 20:20:20
Del, will try and rig up an rpm counter at the weekend, to hard to tell, turning very fast and bearings seem to be freeing up, it is hinged down at the moment until I finish the welds properly, 40mph gusts here at the moment! |
| Del |
Posted - 31/01/2008 : 19:51:48
Hi Chris,
What kind of rpm are you getting on your VAWT without the friction of the gearing?
Cheers
Del. |
| fungus |
Posted - 31/01/2008 : 19:38:54
I've got mine up too, not painted anything yet but will do sometime :)
You can see the balancing bar on the front here, I thought the imbalance would be larger than it is but it wasnt so thats why its near-central.
These pictures show the wires shorted but I've got it all connected now. |
| Del |
Posted - 31/01/2008 : 19:14:20
Hmmm, I'd like to know how they furl. I'll email them tomorrow if I get chance.
Their youtube video is worth seeing just for the tower set-up. I like!
Go to the link below and you'll see the youtube link.
http://www.renewablecomponents.com/wind.html |
