I've been thinking about wind power for about two years now and I want to get off the fence and start to make something. I'd be happy with 250 watts for my...
2502
Steve Spence
sspence65
Oct 21, 2009 11:39 am
take a look at the wind turbine pics at http://www.green-trust.org/photoalbum/Wind%20Class/index.html and you will get a better idea of how it goes together....
2503
swizzlenutz
Oct 21, 2009 5:35 pm
I took my time through the pics and I'm still thinking that this should be fairly easy. My next question has to do with the blade size vs. the magnets and coil...
2504
Steve Spence
sspence65
Oct 21, 2009 5:40 pm
you are correct, you have just built the alternator. neo 35 through 50 would work fine. See wondermagnet.com for magnets. you will also need one of our 3 phase...
2505
swizzlenutz
Oct 21, 2009 6:06 pm
I saw something about star pattern and delta somewhere's. Now the stronger the magnet the more power your going to generate right. Would the stronger magnets...
2506
Steve Spence
sspence65
Oct 21, 2009 6:19 pm
Most of us are using a wye (star), not delta. There's no cogging in an air core design. see http://www.green-trust.org/windpowercalc/ to determine outputs at...
2507
swizzlenutz
Oct 21, 2009 7:45 pm
Awesome, I'll look for as much info on the wrap and wire sizes as I can before I post any more wire questions. I love the sound of that, "air core" design. I'm...
2508
Steve Spence
sspence65
Oct 21, 2009 8:04 pm
If your turbine has a startup of 7mph, that means it doesn't start turning until the winds are 7mph. beware of turbines advertised with 2 mph startups, as...
2509
Stephen
barone_email
Oct 22, 2009 1:47 pm
I'm curious if you think your alternator would work well with a Vertical axis turbine? Do you have a good design for one? Also, how does one sign up for Wind...
2510
Steve Spence
sspence65
Oct 22, 2009 1:51 pm
These alternators work well for a lot of applications that can produce 2hp or so at 650 rpm. I am not aware of a good design for a VAWT. Drop Jim an email at...
2511
swizzlenutz
Oct 22, 2009 2:25 pm
Does it have to be at 650rpm's or would stacking multiple air cores on the top and bottom of a VAWT work. Just a thought. I was thinking of the possibility of...
2512
Steve Spence
sspence65
Oct 22, 2009 2:49 pm
You would need to enlarge the disks and add many more coils and magnet pairs to run at a lower rpm. Steve Spence Renewable energy and self sufficiency ...
2513
Dan Fink
danbob88
Oct 22, 2009 3:10 pm
Hi Swizzle -- Lots of questions! You should probably check out my book "Homebrew Wind Power" -- any library or bookstore can get it, Amazon has it, and if you...
2514
Dan Fink
danbob88
Oct 22, 2009 3:15 pm
Swizzle -- also, keep in mind that a treadmill motor will only take a 3-4 foot diameter blade set, and only provide 100-200 watts in high winds. More of a...
2515
'Chard
frankendaddy
Oct 23, 2009 12:17 am
Hi! Has anyone done any work with making an asynchronous generator? I'm planning on making one with a 7hp motor frame/field and would like to know if there...
2516
Steve Spence
sspence65
Oct 23, 2009 12:22 am
The axial flux is by definition asynchronous. It has it's own "frame" and doesn't use field coils, as it's permanent magnet. Steve Spence Renewable energy and...
2517
swizzlenutz
Oct 23, 2009 12:24 am
I will most likely still play around with the treadmill motor just for learning purposes. I can already see that the air coil design has a major advantage with...
2518
indegreen77@...
indegreen77...
Oct 23, 2009 11:10 am
Does anyone have experience with trying to convince their local municipal authorities that your homemade wind turbine is in fact "safe", and can be used to...
2519
Steve Spence
sspence65
Oct 23, 2009 11:13 am
Seeing as it's a low voltage dc device that not connected to the grid, I wonder what their criteria is? Steve Spence Renewable energy and self sufficiency ...
2520
indegreen77@...
indegreen77...
Oct 23, 2009 9:11 pm
Here is the section on necessary electrical approvals from the city. F. Evidence satisfactory to the building official, that the proposed system meets the...
2521
Steve Spence
sspence65
Oct 23, 2009 9:12 pm
I'm betting you'll never get approval for a homebuilt wind turbine. Steve Spence Renewable energy and self sufficiency http://www.green-trust.org ...
2522
Detrick Merz
detrickm79
Oct 24, 2009 2:12 pm
What about classifying it as a science experiment? Do you have kids, could you pass it off as a kid-involved science experiment? I only think of adding the...
2523
Nick Andrews
nicothefabulous
Oct 24, 2009 2:19 pm
Where in WY? Most places there, I wouldn't even ask, unless I lived in the middle of town and they would see it. If you are out in the grass, just put it up...
2524
Dale King
scrolls601
Oct 24, 2009 7:42 pm
Railway signal houses are NOT subject to NEC. Got a train in ur neighborhood? Left hand of government does not know what the right hand is doing. Sent from my...
2525
indegreen77@...
indegreen77...
Oct 24, 2009 9:52 pm
My oldest boy is a deputy sheriff here, so I cannot really involve him, or my grandchildren. There is a railway about 1/4 mile away. Not everyone on this...
2526
indegreen77@...
indegreen77...
Oct 24, 2009 10:01 pm
You know; that charging batteries idea may be the ticket??? I could install a "covert switching system" to go off and on grid! We are in Douglas, WY. It is...
2527
Charles F
fillinger_ch...
Oct 25, 2009 12:51 pm
A lesson in practical civics is in order. City councils and County boards seldom right building codes, building standards or any technical ordinances, instead...
2528
indegreen77@...
indegreen77...
Oct 25, 2009 11:20 pm
Hello, I am aware of how these codes are written, and I also am aware of the deeper motives behind them. Being a full blown capitalist who loves free...
2529
swizzlenutz
Oct 26, 2009 7:26 pm
I'm just wondering about the steel plates that are need for the air core design. Is it mandatory to have one solid piece of steel or could each magnet have...
2530
Nick Andrews
nicothefabulous
Oct 26, 2009 7:43 pm
And the big problem in asking for a variance is dealing with all of the petty crap and small-minded, power-mad bureaucrats. After going to City Council and...
