Home
JAQForum Ver 24.01
Log In or Join  
Active Topics
Local Time 08:32 05 May 2025 Privacy Policy
Jump to

Notice. New forum software under development. It's going to miss a few functions and look a bit ugly for a while, but I'm working on it full time now as the old forum was too unstable. Couple days, all good. If you notice any issues, please contact me.

Forum Index : Guest Book : new to "The shed"

Author Message
gpalterpower

Senior Member

Joined: 19/07/2009
Location: Australia
Posts: 175
Posted: 04:16am 09 Aug 2009
Copy link to clipboard 
Print this post

G'day there, just want to say hi. This is a great site with plenty of free info and pics about wind gennys from all over the globe. Have been interested in alternate energy for some time now . We will soon be a little greener with a 1kw solar array on the roof as well as solar hot water. Would also like to add a mill to further reduce out carbon foot print. I am interested in the AX FX mill as made by 'FILLM'(really nice work), but a little confused about the magnet/coil configuration. I always thought you would need to have the same ammount of magnets as coils.In his, 12 magnets ,9 coils. Ovbiously it works. Is this to reduce cogging and would you achieve better output with 12 magnets and coils? Can someone fill me in please..Marcus
if it aint broke dont fix it!!
 
GWatPE

Senior Member

Joined: 01/09/2006
Location: Australia
Posts: 2127
Posted: 05:54am 10 Aug 2009
Copy link to clipboard 
Print this post

Hi Marcus,

The AxFx design that fillm has made was based on a design that I proposed. I empirically determined the number of turns and the magnet separations on a test unit I made. Oztules set me on track with a starting point for the coil size and number of turns he used in his own design. The electrical configuration is pretty standard 3phase design. There is no cogging with an ironless core design. Much of the initial work was published on the forum. My own unit is still unfinished. I will be publishing pics before it flys. I had not intended to give detailed drawings. How good a unit performs has a lot to do with the skill of the builder. I only wanted to provide a concept, so others could work it into their own tower/blade/loading design.

Gordon.

become more energy aware
 
gpalterpower

Senior Member

Joined: 19/07/2009
Location: Australia
Posts: 175
Posted: 11:40am 12 Aug 2009
Copy link to clipboard 
Print this post

Thanks gordon for the info,
Maybe Im biting off a bit more than I can chew. Sounds a bit hi tech and probably very time consuming(something i dont have right now) to fabricate one of these mills, so I might wait a little longer before indulging too deep. Think I might stick to a F&P mill instead. Seems to be plenty of info and plans on the site to aid me in construction. Would also like to procure info about grid connection and whats required. Can this be done without batteries and or capacitors? I will be interested in viewing your pics when you finish your project.Is it far from being completed ?.......regards Marcus
if it aint broke dont fix it!!
 
Gizmo

Admin Group

Joined: 05/06/2004
Location: Australia
Posts: 5107
Posted: 10:37pm 12 Aug 2009
Copy link to clipboard 
Print this post

Hi Marcus

A F&P based windmill is a good starting project. Easy to build and cheap enough if your handy with a welder. You'll learn a lot too, and then you can take on a more powerfull design like Gordons axial flux alternator.

You can feed power back into the grid without batteries, but I'm no expert on this, so will let others answer. You should also have a chat to your local power supplier, they will have the info you need.

Glenn
The best time to plant a tree was twenty years ago, the second best time is right now.
JAQ
 
gpalterpower

Senior Member

Joined: 19/07/2009
Location: Australia
Posts: 175
Posted: 10:45am 15 Aug 2009
Copy link to clipboard 
Print this post

Hey Glenn

Well i have found 2 f and p's . think they are the 60 series as the wire size is small. Would it be an advantage if they are 80 or 100 series wound or can sufficient output be achieved with connection changes to the 60? Also had a talk to my grid interactive supplier who gave me a brochure on a windy boy inverter. not cheap....but then what is! 2 and a half grand plus instillation costs. ouch!! could buy a quantity of batteries and inverter to feed home lighting circuits for that price. I'll be posting some pics when i get started. Thanks for you help...marcus
if it aint broke dont fix it!!
 
leeyn
Newbie

Joined: 21/03/2011
Location:
Posts: 5
Posted: 06:34am 22 Mar 2011
Copy link to clipboard 
Print this post

I empirically determined the number of turns and the magnet separations on a test unit I made. Oztules set me on track with a starting point for the coil size and number of turns he used in his own design.
Buy RS GoldRunescape GoldRS Gold
 
Print this page


To reply to this topic, you need to log in.

The Back Shed's forum code is written, and hosted, in Australia.
© JAQ Software 2025