Hello to the group-My name is Scott and I am working on a VAWT design. I found out about axial flux alternators from Hugh Piggott's book and am ready to...
2445
heather
wizcrone50
Sep 3, 2009 7:49 pm
Hi Scott, I wonder if it would be possible to have both type of coils and have a set up to automatically switch between them, for different wind speeds? I'm...
2446
Steve Spence
sspence65
Sep 3, 2009 7:57 pm
Thinner wire allows more turns, higher voltage. Thicker wire allows more amps. heating isn't usually an issue unless you are trying to pull too many amps form...
2447
sal.cerda
Sep 4, 2009 12:43 pm
I like the way you think, Heather. There is probably not enough space on the stator for two sets of coils though. One thing to think about is whether you are...
2448
Steve Spence
sspence65
Sep 4, 2009 12:45 pm
The tail moves the blades out of the wind preventing overspeeding. That solves your worse case. the coils as designed will not overheat. I'm not seeing the...
2449
Neil Dennis
wombat_eagle
Sep 4, 2009 1:51 pm
Just a wild thought, how about a movable stator controlled by a centrifugal governor that would pull the stator away from the magnets at high wind speeds ? ...
2450
Steve Spence
sspence65
Sep 4, 2009 1:54 pm
Why? don't you have a tail? Steve Spence Renewable energy and self sufficiency http://www.green-trust.org http://makingthewebwork.blogspot.com/...
2451
wilaci2
Sep 4, 2009 2:08 pm
2452
Steve Spence
sspence65
Sep 4, 2009 2:10 pm
ah, a solution looking for a problem. this is a simple design. doesn't need cluttering, or extra solutions. Steve Spence Renewable energy and self sufficiency ...
2453
Neil Dennis
wombat_eagle
Sep 4, 2009 4:14 pm
Morning, Steve, just tossing out a thought. Wonder, do you favor a "tilt up" or a "side turn" ? or furling blades ? wombat...
2454
Steve Spence
sspence65
Sep 4, 2009 4:16 pm
The hugh piggot design calls for a side turn. Steve Spence Renewable energy and self sufficiency http://www.green-trust.org ...
2455
dccd_tech
Sep 5, 2009 8:20 pm
Recycled TV antenna tower works fine.. posted pics...
2456
dccd_tech
Sep 5, 2009 8:21 pm
I had thrown this same idea at Ed Lenz- adding another stator wired as delta & switching between them as wind increases-- The width of the added stator for...
2457
Steve Spence
sspence65
Sep 5, 2009 8:24 pm
you can bring all the wiring of each coil out, and switch between wye and delta with the same coils. Steve Spence Renewable energy and self sufficiency ...
2458
dccd_tech
Sep 6, 2009 12:17 pm
This had occurred to me also. But for a 1st attempt.. I usually go with the KISS approach.. (keep it simple,stupid). Less to go wrong that way. ;) Danno...
2459
ferrand
ferrandst
Sep 8, 2009 9:11 pm
Does anyone know of any commercial production - preferably mass production - of axial flux alternators in UK ? best regards Andrew F Stobart BSc Chem. Eng, A...
2460
John Roberson
jgroberson56
Sep 9, 2009 12:43 pm
Ferrand, I don't know about the UK but I found these companies state they are now producing www.axialvectorenergy.com in dubai, united arab emirates state they...
2461
eo.lien
Sep 9, 2009 6:01 pm
hi Ferrand and all, if i dont make error, the "futur energy " generators are axial flux products . Best regards Bidouille...
2462
Mart Hale
mart85
Sep 9, 2009 9:46 pm
I don’t, but I recommend this group if you are in the UK, they are very helpful about wind power. http://gotwind.forumco.com/forum~FORUM_ID~2.asp _____ From:...
2463
mmk_tsm
Sep 12, 2009 11:56 am
Well you can forget about AuraSystems. For some strange reason, they have an exclusive agreement with one company to use their turbines for wind applications....
2464
ferrand
ferrandst
Sep 13, 2009 6:44 pm
Re: Commercial production of Axial Flux Alternators in UK Posted by: "mmk_tsm" mmk_tsm@... mmk_tsm Date: Sat Sep 12, 2009 4:56 am ((PDT)) Well you can...
2465
Scott Winder
musicmovesme5
Sep 14, 2009 12:02 pm
Steve, Thank you for responding to my question about coil wire. I am wondering if anyone has tried wire in 16,18, or even 20Ga before? Because I am...
2466
Steve Spence
sspence65
Sep 14, 2009 12:10 pm
sure, smaller gauge wires are used all the time for higher voltage machines. 48 volt machines use somewhere around 24 g wire. these units are designed for 650...
2467
leebell@...
fleebell
Sep 14, 2009 7:02 pm
You can use whatever size wire you want, but like Steve said, the smaller the gage wire the less current you get. I have one that uses 300 turn coils of 30...
2468
Scott Winder
musicmovesme5
Sep 14, 2009 10:22 pm
Exactly right with the amps. So that's where I wonder why we want generators that put out over 6 amps if we are only charging battery banks. I understand...
2469
Steve Spence
sspence65
Sep 14, 2009 10:26 pm
My 2000 ah battery bank needs 100+ amps to charge it. The wind turbine alternators built on this group make 1000 w or so at 30 mph, not 60. wind is not a...
2470
Mart Hale
mart85
Sep 14, 2009 10:43 pm
What I have read, golf cart batteries can go up to 50 amps. They sell chargers that put out that much. There is many other things you can do with the extra...
2471
Scott Winder
musicmovesme5
Sep 15, 2009 12:19 am
Hey rocking the boat gets quick responses! Steve, my comment about the solar panels that overheat was a joke of course, but that's how I feel about shutting...
2472
Steve Spence
sspence65
Sep 15, 2009 12:27 am
Batteries are typically rated at the c/20 rate. You take your total pack ah capacity, divide by 20, and that's the maximum charge rate without special charging...
2473
jerry freedomev
freedomev
Sep 15, 2009 2:10 am
               Hi Scott and All,                      Boy you sound like a winner!! You must be proud. ...
