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Forum Index : Windmills : looking for some help
| Author | Message | ||||
redbullalan Newbie  Joined: 17/01/2011 Location: United KingdomPosts: 38 |
All looking for some help I have 2 tread mill motor mills on a good day they are fine charging my batteries low wind days not so good. Can i link them in series how would i stop one from driving the other any tips 
Reddbull alan |
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Gizmo Admin Group  Joined: 05/06/2004 Location: AustraliaPosts: 5078 |
Hi Alan Yeah you can connect them in series. These are DC generators, so connect the pos of one to the neg of the other, and you will get the combined voltage from both. Your current will be donwn, but a little current is better than no current. You only need one diode to stop them been driven as fans from the battery bank. How closely matched are they? Do they both give the same sort of output? Glenn The best time to plant a tree was twenty years ago, the second best time is right now. JAQ |
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| petanque don Senior Member  Joined: 02/08/2006 Location: AustraliaPosts: 212 |
Why link them in series? If you want a certain voltage wouldn't some for of electronic regulation do a better job? |
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| redbullalan Newbie Joined: 17/01/2011 Location: United KingdomPosts: 38 |
Hi I tried putting a 30 amp blocking diode in still tries to run one as a motor i.e First motor pos to neg with a diode but still tryes to run the second in reveres neg to pos Go to try a bridge rectifier in see if that will stop the voltage running back into the second. Using 2 due to homemade blades run very well to 11 v each Reddbull alan |
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| redbullalan Newbie Joined: 17/01/2011 Location: United KingdomPosts: 38 |
Hi I tried putting a 30 amp blocking diode in still tries to run one as a motor i.e First motor pos to neg with a diode but still tryes to run the second in reveres neg to pos Go to try a bridge rectifier in see if that will stop the voltage running back into the second. Using 2 due to homemade blades run very well to 11 v each if you use two blocking diodes stops the circuit tried one on each pos leg and one on pos and neg leg problem is as a dc motor it will run in reverse any more tips must be a way Reddbull alan |
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| Gizmo Admin Group Joined: 05/06/2004 Location: AustraliaPosts: 5078 |
Hi Alan In a parallel set up, which sounds like your existing set up, you would need two blocking diodes, one for each motor. For a series set up, only one would be needed. A blocking diode drops approx 0.6 volts, so the less diodes in series the better. 
Glenn The best time to plant a tree was twenty years ago, the second best time is right now. JAQ |
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| redbullalan Newbie Joined: 17/01/2011 Location: United KingdomPosts: 38 |
Thanks for the info i will look into this i have it working with 2 bridge rectifiers dc in dc out rather than ac in dc out my loss is about 2 volts on each genny thank you for you time this site is very good lot of good info Reddbull alan |
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