axialflux at Yahoo! Groups

Re: Vienna Rectifier Controll Circuit Schematics and waveforms

Steve Spence — Tue, 03 Nov 2009 16:48:13 GMT

How would this work with an axial flux alternator? Steve Spence Renewable energy and self sufficiency http://www.green-trust.org

Vienna Rectifier Controll Circuit Schematics and waveforms

Tharks V — Tue, 03 Nov 2009 16:41:45 GMT

tharks.blogspot.com

Re: Low wind speeds

Bill Williams — Sun, 01 Nov 2009 15:45:01 GMT

Thanks Steve for the reply All My Best Bill ... From: Steve Spence Subject: Re: [axialflux] Re: Low wind speeds To:

Re: Low wind speeds

Steve Spence — Sun, 01 Nov 2009 14:49:06 GMT

It's a theoretical machine. He hasn't built one yet. I don't know the rpm, blade length, or voltage of a machine that has not yet been built. Steve Spence

Re: Low wind speeds

Bill Williams — Sun, 01 Nov 2009 14:44:07 GMT

Steve I know how to calculate TSR, I referencing the example you gave ! "at 5 mph, 9' blades might put out 35 watts." What was the TSR for that setup and also

Re: Low wind speeds

JohnnyO — Sun, 01 Nov 2009 14:43:38 GMT

Steve, ever wanted to do something so badly you end up Frustrated b/c the #s never work out ? LOL It's not looking good for the hometeam unless I were to go

Re: Low wind speeds

Steve Spence — Sun, 01 Nov 2009 02:27:34 GMT

To determine tsr, you need a few things. Tip Speed: radius (blade length) distance (2 * pi * r) tip speed = (distance / time(s) ) The blades travel one

Re: Low wind speeds

Bill Williams — Sun, 01 Nov 2009 01:29:29 GMT

Yes Steve, but at what TSR ? B. ... From: Steve Spence Subject: Re: [axialflux] Low wind speeds To: axialflux@yahoogroups.com Date:

Re: Low wind speeds

Steve Spence — Sun, 01 Nov 2009 00:23:44 GMT

at 5 mph, 9' blades might put out 35 watts. run your own numbers at http://www.green-trust.org/windpowercalc/ Steve Spence Renewable energy and self

Re: Low wind speeds

JohnnyO — Sun, 01 Nov 2009 00:21:03 GMT

Steve, what would 5mph start up do for The design ???? We've got quite a bit of 5-10mph winds Above 30meters here. If I could design for 5mph startup then We

flux

Neil Dennis — Sat, 31 Oct 2009 16:03:29 GMT

Morning, Tim: what I'm thinking is like having an open book (thats the iron plate) with one magnets south pole down on the left hand page, the second magnet

Re: 1/4" steel plate?

Steve Spence — Sat, 31 Oct 2009 14:01:11 GMT

1/4" steel plate is cheap, and functional. You can get a pair at http://www.forcefieldmagnets.com/catalog/index.php?cPath=22_30 for $80 Steve Spence Renewable

Re: Low wind speeds

Steve Spence — Sat, 31 Oct 2009 13:50:54 GMT

3-5 mph winds are very expensive to design for, as there's little to no power at that speed. Steve Spence Renewable energy and self sufficiency

Low wind speeds

JohnnyO — Sat, 31 Oct 2009 13:43:56 GMT

I am in southwest Louisiana. I am interested In building an axialflux wg but have a few questions. 1st let me say I run a small rural wisp and have a very

Re: 1/4" steel plate?

Michael — Sat, 31 Oct 2009 13:38:34 GMT

One of the reasons for going to 1/4" plate would be reduction in cost. If it would work?