Double stacked lenz 2 with counter rotating alternator
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@ShaggtyDoo It starts turning in about a 2 mph wind but doesn't start charging into 12 volt battery bank until probably about 12 mph wind. It doesn't put out much until it gets up to about a 17 mph wind.
wiboater4 1 year ago
This is a great design. what is the start up wind speed?
ShaggtyDoo 1 year ago
@Keveeee2000 I am almost done building a bigger alternater for it. 12 coils and 32 magnets on 12 inch disks. The slip ring has almost no resistance. I had these up origianally as single 4 ft turbines with the same smaller alternator that is on them now but wasn't getting much out of it that way. Will be posting pictures of it later with the modification.
wiboater4 1 year ago
This just makes so much sense to me. With the higher torque levels of a VAWT you'll get a higher rpm at the rotor/stator location so it would seem like you could make a more powerful generator.
It would be interesting to use the same platform with the same amount of blade surface area that would only turn one direction and compare the two.
I bet the dual counter rotation would output more power. But, maybe the losses of the slip plate would have some effect too.
Keveeee2000 1 year ago
Still waiting for some decent wind. I have a little bit of binding where it rubs at the top so I'll need a little wind to wear it in. winds been gusting once in a while here but not enough to run it steady. I'll post some shots of the voltage when it's got some wind.
wiboater4 2 years ago
Hi
Great job. What about power?
kloszi 2 years ago