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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) (#1)
by Flux on Wed May 14th, 2008 at 10:43:16 AM MST
(User Info)

You give very little information but I seem to remember you using an 8ft prop. If so you have a classic example of stall. You have a lot of magnet there and with 70 turns it will be too slow for 8ft. Try it at 24v ( or 22v with the sick tractor battery) and see if it comes to life.

The car battery may only be half charged and would drop to 12.36v off load when the surface charge is removed. Longer charging may bring it back up to about 12.6 or more off load.

The sick tractor battery with dead cell that gasses violently at 4A must be well sulphated. Let it boil for a few days, it may improve, it's likely about useless so a bit of experimenting will not hurt.

Flux

Re: 16 pole gen finished and working (3.00 / 0) (#2)
by Jason Wilkinson (jason_wl48@hotmail.com) on Wed May 14th, 2008 at 11:28:26 AM MST
(User Info)

It looks like i've jumped in at the deep side of the pool (an old Barbadian saying) like building a turbine, getting it to stay on a tower,spin and produce some voltage is far easier than understanding terms like "stall" and how much watts it should make when operated at its max.I thought it would get easier as i progress but i'm getting more confused Thanks anyway for responding
Jason

[ Parent ]

Re: 16 pole gen finished and working (3.00 / 0) (#3)
by Jason Wilkinson (jason_wl48@hotmail.com) on Wed May 14th, 2008 at 12:13:21 PM MST
(User Info)

I've just disconnected the batt from the turbine and it sped up going all the way to the 70 v mark and and climbing when i reconnected the batt there was a frightening spark and the amp meter shot up over 10 amps before returning to 4 amps the batt are connected in series to make 24 v. To me this turbine is making power, maybe i'm not using it wisely
Jason

[ Parent ]

Re: 16 pole gen finished and working (3.00 / 0) (#4)
by Flux on Wed May 14th, 2008 at 12:37:56 PM MST
(User Info)

I have had a quick look at your figures and I suspect your cut in is below the 110 rpm that you quote. If you can find enough batteries it would be interesting to try 36v and even 48v to find out where it matches best. You would then have a far better idea where you are aiming for.

You have already doubled the power from 4A at 12v to 4A at 24v. I am sure you are still stalled.

Flux

[ Parent ]

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

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