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Forum Index : Windmills : Stator Winding Question

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Wes Lemarr
Newbie

Joined: 07/09/2008
Location: United States
Posts: 35

Posted: 06:15pm 12 Sep 2008

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Good Day All

I have seen people in China hand winding stators & they were working with 4 strands of copper wire, winding all four strands simultaneously on one pole, I assume the reason for doing this is to save time & labor? The result is four separate windings on one pole, which are then gathered & soldered to gather. I am wondering if is as effective as using one strand of wire with four times as many turns & how it effects the performance of the stator?

Thanks for any advice.
Wes LeMarr

oztules

Guru

Joined: 26/07/2007
Location: Australia
Posts: 1686

Posted: 09:02pm 12 Sep 2008

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It is the same as winding with twice the diameter wire at the same turns. ... Wes:"I am wondering if is as effective as using one strand of wire with four times as many turns & how it effects the performance of the stator?"... same number of turns Wes.... not 4 times.

1/2 the diameter, so a=pi r x r... means there is four times the copper in 1" than 1/2 inch. (2 squared)

The only difference is packing factor is slightly better for 4 in hand, eddy currents will be less of a problem with 4 in hand, and it is easier to bend 4 of the 1/2 diameter wire by hand than a single thicker strand... same with the tension to keep it tamed.

I used 1.8mm wire for my stator, which was managed with difficulty, it would have been much easier to use 4 in hand .9mm wire.... same length/turns.

If using for high frequency, then skin penetration is better with 4 in hand than single wire.

..........oztules

Village idiot...or... just another hack out of his depth

Wes Lemarr
Newbie

Joined: 07/09/2008
Location: United States
Posts: 35

Posted: 12:01am 13 Sep 2008

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OK, I understand your explanation makes it clear.
Thanks Again

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