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Forum Index : Windmills : 3 wire delta

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waggawind

Newbie

Joined: 17/07/2008
Location: Australia
Posts: 18
Posted: 12:37am 23 Jul 2008
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Hi all. Let me say this is a great forum. I have just wired up my first f&p stator. Unfortunately it was a 100 series stator and I wired it up 7 groups 2 pole star. I've since read that 100 series stators are not the go when it comes to HAWTs. I'm just wiring up an 80 series into a delta configuration and notice that no one has published a diagram for 7 group 2pole delta with 3 wires. I believe I have worked it out by combining the 6 wire diagram and the star delta diagram. I will publish a photo and schematic in the next couple of days to check with the forum gurus that I have got it right.
Somewhere on the Murrumbidgee
 
Gill

Senior Member

Joined: 11/11/2006
Location: Australia
Posts: 669
Posted: 03:06am 23 Jul 2008
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G'day Meggawind,
Welcome to the forum. Nice to see you have started your first F&P project. You are possibly right that not every possible configuration has a diagram on this site. Once you understand the differences between the Star and Delta wiring you are able to apply it to various arrangements. I'm sure there is someone here who can critique your proposed layout if you are not 100% sure. Better that than putting in wasted effort and possibly wasting a good stator.

There is an advantage using the 7 group 2pole with 6 wires you mentioned instead of just straight Star or Delta, and that is it can be configured in Star OR Delta should you later want to try the other configuration. This is how I did my first stator. I think you may find Star is for average wind sites. Your proposed Delta would be more suited to very windy sites. Why not run 6 wires (assuming slip rings are not used) down the pole and fit a switch before the rectifier? During the mild seasons run Star then during the windy seasons run Delta?

But perhaps you have considered this option already. In any case, we will be pleased to hear of your progress.



was working fine... til the smoke got out.
Cheers Gill _Cairns, FNQ
 
waggawind

Newbie

Joined: 17/07/2008
Location: Australia
Posts: 18
Posted: 07:47am 24 Jul 2008
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Thanks for the advice Gill. Yes I have seen the 6 wire diagram but I thought I would make it as simple as possible for my first. If I'm not happy with delta I'll change to star as I have a few 80 series units lying around. I will post some photos but will have to do it on public site and add a link. May take a couple of days. Tried the rotor/stator today in the bench vise and was amazed how noisey the hole thing was. I guess thats why decogging is so important. Still have to coat the wires and poles with lacquer so still a way to go.
Somewhere on the Murrumbidgee
 
waggawind

Newbie

Joined: 17/07/2008
Location: Australia
Posts: 18
Posted: 10:32pm 27 Jul 2008
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Here is the drawing and photo of my delta wired stator. I hope I have got it right or its a few hours down the drain.



Edited by waggawind 2008-07-29
Somewhere on the Murrumbidgee
 
Gill

Senior Member

Joined: 11/11/2006
Location: Australia
Posts: 669
Posted: 02:47am 28 Jul 2008
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Yes, that looks right by me. I see you've decogged already so all the stator mods are done.

One of my hints is to use hot glue to hold wiring modifications in place. There is a reasonable amount of vibration in use and for general handling as well I find the glue makes for a more robust unit.

Still a lot more fun to go yet..
was working fine... til the smoke got out.
Cheers Gill _Cairns, FNQ
 
waggawind

Newbie

Joined: 17/07/2008
Location: Australia
Posts: 18
Posted: 06:43am 28 Jul 2008
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Thanks Gill. I'll hot glue before moving onto the next step of my build. I have put some cable ties around the 3 wires and have covered it all in electrical varnish to protect it. I decogged it on the linisher belt attached to the grinder at work. Did a great job.
Somewhere on the Murrumbidgee
 
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