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16 pole gen finished and working | 15 comments (15 topical, editorial)
Re: 16 pole gen finished and working (3.00 / 0) (#5)
by ghurd on Wed May 14th, 2008 at 01:14:35 PM MST
(User Info)

I have been in intermittent contact with Jason.
I do not intend to overstep the boundaries.

If I do, maybe I'll have to fly down to Barbados for a week (or a month), in January and say I am sorry in person.  Wouldn't that be too bad for me?

Some missing information I have...
At the same wind.
Approx 4 to 5 amps into the 12v battery pack.
If it goes to 24 v batt it is about 6 to 8 amps.

I am sure people would like to know what gauge wire was used in the stator.

And how many wires exit the stator.

G-



Re: 16 pole gen finished and working (3.00 / 0) (#6)
by Jason Wilkinson (jason_wl48@hotmail.com) on Wed May 14th, 2008 at 01:48:33 PM MST
(User Info)

The stator is 15.5 ins  12 coils 70 turns of  #14awg single stran (and yes ghurd the trip to Barbados would be good lots of sea and sand,and bring along Flux Danb and the whole board) i had a small turbine up (10 in diam disc 16 1x1/4 round mags 12 coils #16awg 36 turns  41 in blades  that gave me about 4 to 5 amps into the same batt pack  4 x 100 ah connected in parallel  36vdc and climbing open circuit. I made the bigger turbine same method hoping to get more amps with a slightly larger blade. i have a larger blade 5ft diag which i will try when i can get this one down. But does not a bigger blade turn more slower ? i have quite a bit of pictures but they all get mixed up with the ones that were posted already
   Jason
 

[ Parent ]


Re: 16 pole gen finished and working (3.00 / 0) (#8)
by Flux on Wed May 14th, 2008 at 01:56:03 PM MST
(User Info)

Yes the bigger blade does turn slower and that will match the very low cut in speed better.

With a 10ft prop you will have more power to get the thing out of stall. Even so I think you will need to run at 24v especially with the single strand of #14 wire.

When you do break out of stall I think you will be surprised what you can get out of it. You seem to be in a good wind area. If you get those winds regularly I would not aim for the lowest possible cut in speed. If you start producing at 8 mph you will likely do better than aiming for a few mA in lower winds.

Flux

[ Parent ]



Re: 16 pole gen finished and working (3.00 / 0) (#11)
by ghurd on Wed May 14th, 2008 at 02:14:53 PM MST
(User Info)

I hope he wants a face to face apology...

Given the output, etc, would anyone have a guess at a decent new stator for 12V?

Also the 12V amps such a stator could make with the same blades and rotors?

I had it figured at around 800W, however I am not good at this stuff, not even a little.

[ Parent ]



Re: 16 pole gen finished and working (3.00 / 0) (#7)
by Jason Wilkinson (jason_wl48@hotmail.com) on Wed May 14th, 2008 at 01:54:51 PM MST
(User Info)

sorry i missed it 3 wires out the stator which weigh 20 lbs and each rotor is 9 1/4 lbs whole assembly including tail weight 55 to 60 lbs

[ Parent ]


Re: 16 pole gen finished and working (3.00 / 0) (#9)
by Flux on Wed May 14th, 2008 at 01:57:43 PM MST
(User Info)

Yes that rules out Jerry connecting it so you are stuck with 24v minimum.

Flux

[ Parent ]



Re: 16 pole gen finished and working (3.00 / 0) (#10)
by Jason Wilkinson (jason_wl48@hotmail.com) on Wed May 14th, 2008 at 02:07:06 PM MST
(User Info)

To wind another stator (i'll have to hide from the wife to do this and be ending up with 3 spare ones) the cost of the wire is far less than a 24 volt inverter. In the coming weeks   D V  i'll wind with 2 in hand #14 36 turns
 ps how can i submit pictures with the post
  Jason


[ Parent ]


Re: 16 pole gen finished and working (3.00 / 0) (#13)
by snowcrow on Thu May 15th, 2008 at 04:32:40 AM MST
(User Info)

Hi Jason, 2 in hand #14 36 turns is fine for 3 coils per phase, but you have 4 coils per phase.
  1. turns x 3 coils = 108 turns per phase.
  2. turns / 4 coils = 27 turns per coil.
Blessings, Snow Crow

[ Parent ]


Re: 16 pole gen finished and working (3.00 / 0) (#14)
by Jason Wilkinson (jason_wl48@hotmail.com) on Thu May 15th, 2008 at 10:02:27 AM MST
(User Info)

Thanks Snowcrow   so it looks like 27 turns of 2 strands of #14 awg magnetic wire
 Jason

[ Parent ]


Re: 16 pole gen finished and working (3.00 / 0) (#15)
by Flux on Thu May 15th, 2008 at 01:27:55 PM MST
(User Info)

I would be inclined to suspect that 27 turns will be ok for 10ft.

Before winding a new stator I would try running the existing one into higher voltages until you then find the correct load speed.

From Ghurd's figures you are way better at 24v, I would also try 36 as I think it may do better. If it does then try 48 and if that is worse you have gone too far.

Then say it worked best at 36v you would use 1/3 of the existing turns. That way you have your result without more trial and possibly error.

Flux

[ Parent ]



16 pole gen finished and working | 15 comments (15 topical, 0 editorial)

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