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Generating RE Power in Atlantic Canada | 16 comments (16 topical, 0 editorial)
Re: Generating RE Power in Atlantic Canada (3.00 / 0) (#13)
by sdscott on Wed Nov 22nd, 2006 at 07:01:05 AM MST
(User Info)

Thanks for all the positive feedback, Gang!  After a good nights sleep (fisrt since disaster), and waking up to these replies, I think I have the nerve to get started on the repairs!

I recognize most of your aliases, and I would like to thank you all for getting me this far, as it is tribute to your experiences that got me here.

Mitcamp, I was daring with some of these mods, like the adjustable spindle assembly.  But it has proven stable for the seven days in flight, as well as the Big Bang! (the adjustment stayed on mark).  Also, I was furling late, and this adjustment allowed me to fine-tune by moving a little farther from the Yaw.

Richhagen, I am hopefulof the blade that exploded absorbed the energy of the fall.  Also, the turf here is very spongy because of the forest-floor.

DanB, thank you especially, as your earlier projects are what got me inspired, and interested in RE and wind power.  I also worry about my torsion system.  However, I am hoping the experiment will show that the change in wind direction over time will mostly correct itself by giving an opposing turn or two, given enough slack power-cable and time.  If I am wrong, the wire-cables and collar are easily removed and the system will run as most do.  Thanks, again!

Montana, hmmm, a solar-power beacon-light... thanks :)

Cdog,  I am also surprised to see all my neighbors here (thought I was alone).  The best advise I can give on blade carving is 'do not start until you can understand the reasons and effects of the dynamics'. eg. the "cord" is the strength of the blade, summing up, and transferring all of the turning forces to the root/hub, hence the constant increase in cord material as you move from the "tip" to the "root".  Like most, it took me a very long time to get my 'minds-eye' to see the air-foil and fluted curve of turbine blades, and the reason for it.  Good luck with your project!

Flux, you gave me more insight and knowledge of three-phase and associated principles... your the man!  Thank you as well.  There is actually one 60Amp series diode between each bridge 'positive output' and the battery bank to prevent back-flow current to the alternator in the case of a shorted bridge.

Frank06, some of the Gang may not be aware of Point Lepreau being a Nuclear-Power generating site, and presently being fitted with a 2nd reactor "Lepreau-II".  My wife is just putting the finishing touches on our new signage, to be erected after the governments big-sign is up.  My wife's will read "Lepreau-III Power-Generating Site" ;)

Thanks, to all of you!


[ Parent ]



Re: Generating RE Power in Atlantic Canada (3.00 / 0) (#15)
by DanB (danb@*no spam*otherpower.com) on Wed Nov 22nd, 2006 at 08:09:30 AM MST
(User Info) http://www.otherpower.com/

"DanB, thank you especially, as your earlier projects are what got me inspired, and interested in RE and wind power.  I also worry about my torsion system.  However, I am hoping the experiment will show that the change in wind direction over time will mostly correct itself by giving an opposing turn or two, given enough slack power-cable and time.  If I am wrong, the wire-cables and collar are easily removed and the system will run as most do.  Thanks, again!"

It's interesting.  I find that up here (and it is turbulant around here) machines tend to twist up slowly - but consistantly in teh same direction.  Which way it twists up I believe has a lot to do with which way it furls.  When running in a gusty wind - if the  gust hits it in such a way that the tail can lift - then sometimes the machine will mostly stay put and the tail will lift.  If it hits on the other side, the machine will yaw.  So it's more inclined to yaw one way than the other I think.

The way in which its likely to twist up is also the the way it needs to turn when it's furling.  If your's twists up and is prevented from further yawing - it will likely prevent furling and if the machine is running at that time it only takes once.  A machine that can't furl is likely to burn out and will also put a much greater load on the tower than it normally would.  I'd not inhibit the yawing on this - if you're that worried about it I would look into making slip rings.

Another good policy might be - unplug it at the bottom of the tower when your not around, and plug the line into a dead short.  Then, perhaps when your gone the machine can turn freely with the whole line and nothing will twist up and the machine will remain shut down.  That might solve both our concerns!

[ Parent ]



Re: Generating RE Power in Atlantic Canada (3.00 / 0) (#16)
by sdscott on Wed Nov 22nd, 2006 at 08:42:38 AM MST
(User Info)

I agree, thank you for your insight.  Your thoughts on 'turning one direction due to furling' seem solid to me. I may retire this modification... or, add a spring-loaded flip mechanism to titer my bird at the rest-stop in heavy winds... :) just having fun! Thanks, Dan.

[ Parent ]


Generating RE Power in Atlantic Canada | 16 comments (16 topical, 0 editorial)

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