Coil Windings

[TXWolfie]

Has anybody find the best windings shape or design or does it break down to personal preference or design needed for their personal preference in plate design. would love to know since I have seen several diff designs on the net.

[Flux]

There is a lot of personal preference and it depends on the application , the material you have available and how cost effective you want the thing to be.

Alternators for wind duty have to have a lot of different compromises from those designed for other applications and similarly you have different requirements for grid tie, heating and battery charging.

Obviously some designs are wrong but as long as you avoid them there is a great deal of differing combinations of shapes and arrangements that work perfectly well.

Flux

[GoVertical]

Greetings, The ideal shape should have as much copper wire perpendicular to the magnetic lines of flux as possible based on the shape of your magnets. The center hole of the coil should only be slightly larger then the magnet being used. This will keep the resistance of the coil as low possible and help improve performance at higher RPM's. Best regards. 

[BLUE]

So if a coils inside length was 3" with 50 turns of #16 vs. 6" with 50 turns of #16 (turns and size are just grabbed out of the air) would more copper give you more power?

sorry for intruding

Blue

[ghurd]

So if a coils inside length was 3" with 50 turns of #16 vs. 6" with 50 turns of #16 (turns and size are just grabbed out of the air) would more copper give you more power?

Maybe.

Generic...

If the magnet was 3", then no.
The induced voltage would be the same, but 'power' means flowing amps, flowing amps means there is a resistance loss, and longer #16 wire means more resistance so less power comes out.

If the magnet is 6", then yes.
The larger diameter would 'catch more flux' (?), and make more power.

The area of the magnet compared to the length of the wire counts for a lot.
3x3" magnet is 9"sq, with 12" per turn.
6x6" magnet is 36"sq with 24" per turn.  Twice the wire (and resistance) 'catches' 4x as much magnetic field.

G-