I am trying to do a DIY project of 1KW 3 phase permanent magnet alternator suitable. I think of around 1 feet dia stator with rotors having PMs on its both...
1983
Steve Spence
sspence65
Jan 30, 2009 12:53 pm
12 magnets on each plate, 9 coils sandwiched in between. We use N50 magnets, 2" x 1" x .5" What voltage are you trying to produce? Steve Spence ...
1984
Sean Novak
thesightsmith
Jan 30, 2009 2:34 pm
Hi, Sorry to but into this thread. I'm a huge fan of the group and a long time lingerer. First time posting however. Thank you to those responsible for this...
1985
Steve Spence
sspence65
Jan 30, 2009 2:47 pm
Direct Grid tie is not appropriate for this design, as rpm must be fixed in a grid tie application. these alternators are 3 phase wild ac, with swinging...
1986
Sanat S
sanat_salus
Jan 31, 2009 12:54 pm
Hi  I dont have confirm voltage value in my ming. Actually I am looking to produce maximum possible output KW from lower RPM input.  so what should be...
1987
Steve Spence
sspence65
Jan 31, 2009 12:58 pm
Voltage needs to be known, for that determines the gauge of the wire, and the number of turns. 100 rpm is too slow, as these units are designed for 650 rpm or...
1988
doug duncan
duncman2003
Jan 31, 2009 1:04 pm
the formula is 1.33 (magnet) x no. of coils ... From: Steve Spence <sspence@...> Subject: Re: [axialflux] Need to know relation between turns,...
1989
jerry freedomev
freedomev
Jan 31, 2009 1:05 pm
Hi Sean and All, I agree with Steve you need to go to a gridtie inverter to connect...
1990
Steve Spence
sspence65
Jan 31, 2009 1:12 pm
Can you further explain that with an example? Steve Spence http://www.green-trust.org http://www.buildittogether.info...
1991
Sean Novak
thesightsmith
Jan 31, 2009 4:11 pm
Hey Jerry, Hey,, a fellow South Floridian, or former South Floridian,, or whatever ;) .. I live in Davie, which is very close to Fort Lauderdale. So, you ...
1992
Steve Spence
sspence65
Jan 31, 2009 4:18 pm
Most VAWT's I've seen are noisier than our HAWT. It's the small high rpm units that make a lot of noise. That 40% more efficient blade turns a 10% efficient...
1993
Neil Dennis
wombat_eagle
Jan 31, 2009 4:34 pm
Wonder, have you looked at the Lenz blade pattern ? From the pics on that research site it's kinda in the same thoughts. FWIW, I had a small unit built and...
1994
jerry freedomev
freedomev
Feb 1, 2009 4:37 am
Hi Sean and All, Those mostly misconceptions on HAWT's. With...
1995
rolando_elizondo
rolando_eliz...
Feb 1, 2009 6:17 pm
I found about 40 small neodymium magnets on an industrial garbage storage. They seem strong, but they are only .25" thick. Following the tipical construction...
1996
Sean Novak
thesightsmith
Feb 1, 2009 7:55 pm
Say the subject three times as fast as you can. Awesome! I really appreciate you taking the time to share your knowledge and experience. I'll definitely be...
1997
jerry freedomev
freedomev
Feb 2, 2009 1:02 pm
Hi Sean and All, You are welcome. We are here to help guide people to better windgens and other things so you don't waste your time, money and learn...
1998
Sean Novak
thesightsmith
Feb 3, 2009 1:13 am
Hello Jerry, Here's the site, [LINK: http://coet.fau.edu/] Florida Atlantic University's Center for Ocean Energy Technology. This is the guy you want to...
2001
Steve Spence
sspence65
Feb 8, 2009 1:45 am
The magnet plate is 12" in diameter, the magnets are 2" long, and are aligned to the outer edge of the plate. This unit can produce approximately 1000 watts at...
2003
mine baby
themailboxre...
Feb 8, 2009 1:10 pm
Has anyone seen this guys videos on Youtube? i am curious to what you guys think about this mans setup and if it looks like it would work better then most...
2004
Brian Rodgers
outfitnmbr
Feb 8, 2009 2:26 pm
This looks pretty much like ours, cept for the cool(ing) holes cut in the rotors See my newsletter for progress report on our axial flux wind turbine ...
2005
Steve Spence
sspence65
Feb 8, 2009 2:28 pm
Cooling holes aren't usually necessary unless you went with too small diameter wire in the stator. The open design is self cooling. Steve Spence ...
2006
Mart Hale
mart85
Feb 8, 2009 7:10 pm
I watched this, is the next step to pour resin on the rotor to hold the magnets in place? I saw the metal strip on the outside and wondered if it was a form...
2007
David Patterson
odd_kins
Feb 9, 2009 1:10 am
I wouldn't use oak, it's heavy and brittle, yellow pine would be better. the video showed him using either hemlock or douglas fir that was full of knots, it...
2008
Neil Dennis
wombat_eagle
Feb 9, 2009 3:02 am
If you make a jig with the progressive pitch you can laminate a blade that will only take a bit of cleanup to be finished and strong. wombat...
2009
Mart Hale
mart85
Feb 9, 2009 3:02 am
Thanks for the info!... _____ From: axialflux@yahoogroups.com [mailto:axialflux@yahoogroups.com] On Behalf Of David Patterson Sent: Sunday, February 08, 2009...
2010
Steve Spence
sspence65
Feb 9, 2009 3:06 am
You can find many construction photo's at http://www.green-trust.org/photoalbum/ under the two wind sections. Steve Spence http://www.green-trust.org Free...
2011
Brian Rodgers
outfitnmbr
Feb 9, 2009 3:27 am
We have two sets to test on our second turbine, the first set is made from local kiln-dried laminated Douglas Fir which is probably the wood we will stick...
2012
David Patterson
odd_kins
Feb 9, 2009 3:38 am
I have used a lot of sugar pine, it holds up well in the foundry. it's stable but dents easly and doesn't have as much flex at fir. nice looking blades. Dave...
2013
mine baby
themailboxre...
Feb 9, 2009 1:48 pm
Are you sure they are cooling holes our are the holes drilled to make the rotor more light weight. weight is the enemy in wind turbines right? and also, is...
2014
Erik Akia
erikakia
Feb 9, 2009 1:51 pm
What kind of wood would you use and how thick would each laminate be? Thanks Erik...
