9 coils and 10 magnets?

The spinning discs that hold the magnets, and magnet issues

9 coils and 10 magnets?

Postby LGRECO on Sun May 30, 2010 11:37 am

I set off building a 12v wind turbine. This is my first project.

I started building the mould of a stator using Hugh Piggott
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Re: 9 coils and 10 magnets?

Postby windgat on Mon May 31, 2010 7:24 pm

How many phases? If you are going for a three phases design I dont see how 9 and 10 can work. But if you post a diagram of the layout it will be clearer.
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Re: 9 coils and 10 magnets?

Postby LGRECO on Tue Jun 01, 2010 1:00 am

Some of the information I am trying to combine in order to build a generator that works is here.

http://www.scoraigwind.com/pirate%20oldies/Hugh%20Piggott%20Axial-flow%20PMG%20wind%20turbine%20May%202003.pdf

Pages 46 and 48. Connection diagram as it appears on page 46 but with 9 coils instead of 6.

I thought of keeping the size of the coil appearing top right hand side of page 46. This size of coil fits perfectly the size of my magnets.

However, as I can easily fit 9 coils in the stator mould, (I made the mould big as I was working to an older design), I could increase the efficiency of the turbine. Do you think I should go for 12 magnets per rotor instead of 10?

The older document I based my stator mould is here;

http://practicalaction.org/docs/energy/pmg_manual.pdf

P.8, list of materials, magnets too big and not very powerful.

Regards,
Aris
Last edited by LGRECO on Tue Jun 01, 2010 1:17 am, edited 1 time in total.
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Re: 9 coils and 10 magnets?

Postby windgat on Tue Jun 01, 2010 8:37 am

Those are long documents to wade though!
It seems like 3 phase - if that is the case the relative layout of coils and magnets is crucial. You can't add magnets or coils to get more power. You need to either stick to a design, or understand how the phases of the stator interact with the magnet layout.
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Re: 9 coils and 10 magnets?

Postby goof on Thu Jun 03, 2010 10:50 pm

Hi Lgreco
I made a couple of drawing to sea if it will work as you can sea in the 12 mag and 9 coils there
is 3 coils that cut throw the mag that is the 1 set of the 3 phase and as it goes on the rest folow
12x9.jpg

and in the 8 mag and 6 coils gives the same example of it is 3 coils it is 2 coils so in my opinion you need more winds per coil to mike up for the volts
8x6.jpg

in a 10 mag and 9 coils you nead to treat each coil individual so you need at least 2 to 3 times the amount of winds per coil I hope it helps
10x9.jpg
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