Difference between stator windings?

[Turfdr]

I was hoping someone could tell me the difference between these two stators?





One is wound with coils in series and the other seems to be split.

What is this winding called ,is it wave wound? Is there any benefits to this kind of winding?

I had some pretty good results with the series wound and not so good with the other.

And what's up with the stator plates on this one , they look like hollow plates that have been squashed together? Is it better than the solid steel or is it a cost issue?

Thanks.

[bob g]

the top one is connected in delta

the lower one is connected in wye or star

delta for higher amps lower volts

wye for higher volts lower amps

both appear to be out of a small delco alternator,

the stator iron is laminated to reduce eddy currents

and to some extent hysterysis

neither are very good for windpower, because they typically need

2krpm to get into some decent output.

bob g

[bj]

Turfdr--these are both Delco's, Not sure why the difference in appearance

of the lam's, I think it's just the stamping process.  The key difference

is the number of lam's.  The more/thinner the better.  It seems to make a

small difference in cogging.  The top one appears to have 10 turns per coil.  The more turns the better, but I believe 12 turns was the max made.

That stator was made for alts on tractors and the like that turn lower

rpm.

For any realistic rpm, you will have to rewind.  After many tries, I think

the best I could fit in was 19 wraps of #18 wire.

Also, for any realistic rpm, throw away the winding in the rotor and replace with a large neo ring, or any other method of getting a lot of neo

in there.

All this will get you some usable power out of a set of 5 foot blades.

After saying all that, and if you decide to do the work, use the larger

Delco.  The larger stator/rotor will produce a higher voltage at the same

rpm, all other things being equal.

Again, if you decide to go this route, and I can be of help, just ask--my

E-mail is on the board.  Just include something about Otherpower in the

subject line.

bj

good luck

[scoraigwind]

It looks to me as if the stators will be about the same (unless they are connected up differently).  One has a few big coils and the other has twice as many coils, each of which has half as many turns.  So the first is easier to wind and the second a little more compact and efficient but not much.

[Jerry]

Or you can do what I did in my GM alt wind tunnel test and get much better prefomance without rewinding it.

HHMMM hard way or easy way what should I do?

                       Jerry