power electronics circuits tharks.blogspot.com power electronics circuits tharks.blogspot.com...
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prog_i_am
Jun 4, 2009 1:12 pm
Work in progress.. My first windmill build 12.5 foot diameter. I am making some progress every few days or so. Like most of you I do not have a lot of time to...
2307
Steve Spence
sspence65
Jun 4, 2009 1:26 pm
Very nice. Love the powder coating. Steve Spence Renewable energy and self sufficiency http://www.green-trust.org http://makingthewebwork.blogspot.com/...
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Peter Dragon
caveman482
Jun 4, 2009 7:14 pm
... That's a very nice setup you have there, I hope to start on mine soon....
2309
Adrian James Flynn
ajamesflynn2001
Jun 4, 2009 9:20 pm
(Off Topic Response and question) Great work! From the looks of that tower Saw Horse :O you look like you spend a lot of time on the radio also, it looks like...
2310
Adrian James Flynn
ajamesflynn2001
Jun 4, 2009 9:37 pm
(Off Topic Response and question) Great work! From the looks of that tower Saw Horse :O you look like you spend a lot of time on the radio also, it looks like...
2311
prog_i_am
Jun 5, 2009 12:49 pm
Tower is a Rohn HDBX 48 foot on a tilt over base, good for 18sq ft wind load. The wind load needed for the windmill does have me concerned. I have not been...
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mmk_tsm
Jun 12, 2009 8:22 pm
Hello All, I am very impressed by the workmanship of Prog_I_am's generator. It has spurred me into maybe attempting to build one for myself. Has anyone figured...
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Dan Fink
danbob88
Jun 14, 2009 1:58 am
Hi Mike -- we have a 12-footer that's about a 2kw machine, and our 17 footer and 20 footers.....peak power ratings are deceptive and not that useful; better...
2314
ferrand
ferrandst
Jun 15, 2009 1:06 am
people tend to underestimate just how sturdy a tower is needed and there have been tower failures. (We use 12 inch steel tubing now). Dan, Try Ductile Iron...
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mmk_tsm
Jun 15, 2009 9:30 pm
Hello Dan, can you please direct me to the free web pages with construction details at Otherpower. Thanks, Michael....
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mmk_tsm
Jun 15, 2009 9:47 pm
Hello Dan, could you please direct me to where the construction details are located on your website at Otherpower.com. TiA, Mike....
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Dan Fink
danbob88
Jun 15, 2009 11:04 pm
Hi Andrew -- We've had no problems ourselves with steel tube towers. We prefer 12 ga tubing over schedule 40 water pipe because of how the strength of steel...
2318
Doug Younker
n0lkk
Jun 16, 2009 2:31 pm
FYI, sorry it it's old news. http://engineeringtv.com/blogs/etv/archive/2009/05/28/axial-flux-technology-for-wind-turbines.aspx or...
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mmk_tsm
Jun 17, 2009 1:40 pm
Hello Dan, I posted a query recently about details for larger axial flux generators. In response Dan replied..."and we have free web pages with construction...
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Michael Vanecek
mikevanecek
Jun 17, 2009 10:07 pm
Did you even look? Click on the link "Wind" and scroll down - there's a whole list of different projects detailed there including the 17 and 20' mills. Have...
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Dan Fink
danbob88
Jun 18, 2009 2:04 pm
Hi Mike -- sorry for the delay, I'm traveling; just finished the Small Wind Conference, and we are giving a couple workshops at the fair. This page has all our...
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Jim Krywalski
jkrywalski2000
Jun 18, 2009 3:32 pm
And, since smaller wire is needed to carry three phase AC than DC, it's also cheaper to move that power from the generator to the battery. Not to mention more...
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mmk_tsm
Jun 18, 2009 11:19 pm
Thanks Dan, I finally found them. Not sure why I couldnt see them earlier....but I had looked, honestly. The 17 footer looks like a very nice generator to try...
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hiburd28
Jun 20, 2009 11:38 pm
http://www.magnet4sale.com/product.php?productid=16954&cat=354&page=1.here is a address for some epoxy coated magnets. the price seems very reasonable. but...
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TheDude
theduderulez
Jun 21, 2009 12:49 am
... Those would rock on AFG...
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Kirk McLoren
kirkmcloren
Jun 21, 2009 5:15 pm
Pulling force is related to size. Induced voltage in a wire is # of lines cut per unit time, thus velocity and flux density. The higher the magnet number the...
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romur1
Jun 22, 2009 3:07 pm
Hugh Piggott used N35 in the examples in his books, and they are a good price. Although http://www.magnet4less.com/ doesn't carry N35 any more, and have the...
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TheDude
theduderulez
Jun 23, 2009 1:45 pm
... N-45 are way better and he does suggest them in his newest book as of Jan 09...
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mmk_tsm
Jul 1, 2009 1:45 am
Hello, are there any guidelines for choosing magnets, size, shape and strength in relation to the output power of the generator. How do Ceramic compare with...
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Steve Spence
sspence65
Jul 1, 2009 1:56 am
ceramics will have greatly reduced output. a 500 to 1000 watt turbine should have neodymium's, grade n40+, approximately 2" x 1" x .5" or so. Steve Spence ...
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rolando_elizondo
rolando_eliz...
Jul 1, 2009 5:09 pm
Steve, I have 2" x 1" x .25" magnets, lots. Is it possible to use two magnets united to increase the force as a .5" one?...
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Steve Spence
sspence65
Jul 1, 2009 5:20 pm
I do not know. Steve Spence Renewable energy and self sufficiency http://www.green-trust.org http://makingthewebwork.blogspot.com/...
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gardennut69
Jul 2, 2009 1:42 pm
If there is anyone in Memphis area planning or constructing the alternators, I would like to observe the construction and hear about the planning....
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offlogic
Jul 8, 2009 12:49 pm
Your flux will increase with thickness, so stacking magnets will increase the force. Some incidental losses may occur, they they will be very minor. Intermag...
