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FlashmanAB

Newbie

Joined: 19/08/2009
Location: Australia
Posts: 3

Posted: 09:43am 06 Sep 2009

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Hi, I apologise well in advance for my newbie question.
I have been reading the posts for weeks and take my hat off to the time, ingenuity and perseverence of the supporters of this forum.
I love the idea of generating clean power but I don't have the money up-front to buy solar panels. I am keen to try and build a wind turbine and have just bought a F&P washing machine motor. (used)
The link is to the picture of a rewired stator and I was wondering what the output voltage is likely to be using this rig. Stator Star
I am supposing it could be used in either 12 V or 36 V, but not 24 V.
Do you recommend filtering the DC coming out of the rectifier using caps?
Has anyone sucessfully used old truck, tractor or forklift batteries for power storage? I bought Hugh Piggott's book and he suggested forklift batteries but there may be a big difference between the common forklift battery in the UK and in Australia.
AndrewEdited by FlashmanAB 2009-09-07

GWatPE

Senior Member

Joined: 01/09/2006
Location: Australia
Posts: 2127

Posted: 09:57am 06 Sep 2009

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FlashmanAB said I am keen to try and build a wind turbine and have just bought a P&P washing machine motor. (used)

I assume this is a F&P.

The pic you show is good for 12V. This would be a 2s7p stator wired in star.

The intended loading will determine if a capacitor filtering system needs to be installed.

Matching of 2nd hand batteries is required.

intended operating speed of the rotor will dictate the best matching.

Gordon.

become more energy aware

FlashmanAB

Newbie

Joined: 19/08/2009
Location: Australia
Posts: 3

Posted: 10:16am 06 Sep 2009

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GWatPE said The intended loading will determine if a capacitor filtering system needs to be installed.

Hi Gordon, thanks for the reply. Do you mean that if you are charging a battery you don't necessarily have to smooth the DC?
Could you recommend an F&P stator configuration capable of 24 V output in an exposed, windy area?
AndrewEdited by FlashmanAB 2009-09-07

GWatPE

Senior Member

Joined: 01/09/2006
Location: Australia
Posts: 2127

Posted: 01:53pm 06 Sep 2009

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The battery is equivalent to a really big cap.

I used series100 wired in delta. The series80 rewired 7s2p is almost the same output. If you add a Cap voltage doubler[approx 470uF 250VDC back to back caps], improved low end performance and loading will result. Be careful with rotor more than 2.4m dia, as this will likely overpower a single stator design.

I just gave away my F&P stuff and have moved to all AxFx designs. Will be making another from aluminium eventually. There is something about a windmill that spins when the anemometer doesn't. Under 1kph winds have pretty low energy. Doesn't seem to worry the AxFx, with around 25rpm, and ready for the 1-2W puffs that go straight to the battery.

The F&P was a good phase for me and I cut my teeth proving the cap arrangements with it.

Hope you make a winner to.

Gordon.

become more energy aware

FlashmanAB

Newbie

Joined: 19/08/2009
Location: Australia
Posts: 3

Posted: 10:08pm 06 Sep 2009

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Hi Gordon, thanks for the reply. I am reading and learning as I go but I think I will follow your lead. "Cut my teeth" on an F&P.
The metalwork is coming along (F&P) and the whole house smells like resin from the solder!
Andrew

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