Go to Otherpower.com Home Page Go to Forcefield Shopping Cart Go to Wondermagnet.com Home Page
Front Page - [Homebrewed Electricity-- (wind) (solar) (hydro) (steam) (controls) (storage) (mechanical)] - Classifieds - Site News
Everything - Newbies - [Remote Living-- (housing) (heat) (light) (water)] - Rants & Opinion - Diaries - Our Products
5kw mornings amusement | 10 comments (10 topical, editorial)
Re: 5kw mornings amusement (3.00 / 0) (#4)
by jimovonz (username at matata dot co dot nz) on Sat Sep 20th, 2008 at 02:39:13 PM MST
(User Info)

Hmmm... Microwave oven transformer primaries in a bucket... I spent half a day running around with a very similar setup in the back of my truck when road testing some Chinese turbines... :-)
Looks like your batteries/alt keep those blades well loaded down. I suppose a 50A capable MPPT controller is next on your list to keep those blades right on peak huh?(once you sort out the furling that is!)...



Re: 5kw mornings amusement (3.00 / 0) (#6)
by Flux on Mon Sep 22nd, 2008 at 10:51:28 AM MST
(User Info)

Interesting point jimovonz, this does show how much the performance is compromised by dragging these things down to constant voltage and near constant speed.

Once you let the speed rise with load the power capture goes way up and the stator loss goes down.

In theory with greater power extraction the thrust should be higher and it should furl at a lower wind speed.

It may be that the far increased power is obtained at so much lower wind speed that it didn't reach furling or it may be that the seeking force from the prop is increased by the higher prop speed.

Flux

[ Parent ]



5kw mornings amusement | 10 comments (10 topical, 0 editorial)

Menu
· create account
· How to use the board
· FAQs
· search the board
· Google search the board
· Old Otherpower Board

Login
Make a new account
Username:
Password:

Powered by Scoop
You must be a registered user to post here. It's easy and free, and the link is on the upper right side of your page.
All trademarks and copyrights on this page are owned by their respective companies. Postings are owned by the poster, but may be deleted or moved at the ADMIN's sole discretion. The Rest © 2003 Forcefield.
You can Email the board ADMIN here. PLEASE include the username you signed up with!