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Forum Index : Windmills : Star and Delta

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oztules

Guru

Joined: 26/07/2007
Location: Australia
Posts: 1686

Posted: 08:15am 02 Nov 2009

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Thanks Herb,
Delta is fine for this application, as I don't have to change anything in the "box"... just a few wires on the pole (only about 9 feet off the ground...easy. I can live with the losses until the third blade materialises, then back to star with lower rpm and more torque

)

I am wondering what kind of coil geometry I would use to get trapezoidal waveforms instead of sine waves. I believe that they too sum to zero in delta, and possibly better shaped for battery charging as they have the square wave top to start with, and a linear transition.... but I have no idea if we can do it from coil geometry, or it is just a solid state solution for driving three phase PM motors...

I think Gordon may have gotten close to this on his original axfx with the square magnets and skinny gaps.... maybe then peak=rms for this wave shape??

..........oztulesEdited by oztules 2009-11-03

Village idiot...or... just another hack out of his depth

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