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Forum Index : Windmills : first windmill

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wainfleetwild
Newbie

Joined: 07/01/2011
Location:
Posts: 2

Posted: 02:46am 08 Jan 2011

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i am new to wind power and am going to try my luck at building my first windmill . i decided to use a pm dc motor , my question is have i got the right one ? it's 90 vdc , 1750 rpm , 5 amp . is the rpm to high , or amps to low . any help would be appreciated .

Downwind

Guru

Joined: 09/09/2009
Location: Australia
Posts: 2333

Posted: 03:25am 08 Jan 2011

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If im right (and i could be well wrong here) you take the 1750 rpm and divide it by the voltage, then times that by the voltage you require to get the operating rpm of the mill.

So......

1750 / 90 = 19.4444

19.4444 x 14 volt = 272.22 rpm

You should get 14 volt at 5 amp at 272 rpm.

Should be reasonably practical for a 12 volt system, but might not be so good for a 24 volt system.

Pete.

Sometimes it just works

wainfleetwild
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Joined: 07/01/2011
Location:
Posts: 2

Posted: 12:37am 24 Jan 2011

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thank you downwind

gsw999

Newbie

Joined: 22/01/2011
Location: United Kingdom
Posts: 19

Posted: 10:41am 24 Jan 2011

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I have played around with a few differene motors ametek etc the best one seems to be the indiana, hopefully playing around with this will give you the oomph to build your own turbine from scratch :)

i am not interested in giving my hard earned money to corrupt "leaders" to pour down the drain.

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