Re: [femm] Linear induction motors

[dcm3c@xxxxxxx]

In a message dated 7/29/00 4:06:53 PM Eastern Daylight Time, jrcamacho@xxxxxx 
writes:

> I am posting this message to all people interested in femm applyed to
> electrical machines. I am currently using "FEMM" to optimize the 
> design of linear induction motors. If anyone is interested in similar 
> work I will be glad to share ideas and the work that has been 
> developed here.

Hmm--I've been spending most of my time for about the past two years messing 
around with very large long stator LIMs running under field oriented control. 
I use femm for some of this work, but I've have to be somewhat careful of 
the shortcomings of a 2-D, static configuration analysis for LIM design. One 
tends to lose plate edge effects, which have a big impact on losses and rotor 
time constant. Also, the effects of higher harmonics can be a big deal in 
LIMs. However, you really need an analysis including motion to see the drag 
and losses associated with the harmonics.

Anyhow, I'd be interested in talking about LIMs....

Dave.
--
http://members.aol.com/dcm3c