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# Re: [FEMM] FILL FACTOR

- To: FEMM mailing list <femm@list.foster-miller.net>
- Subject: Re: [FEMM] FILL FACTOR
- From: David Meeker <dmeeker@foster-miller.com>
- Date: Sun, 15 Feb 2004 22:02:07 -0500
- In-reply-to: <W.20040213143852.3DF.1.1DAD@post.strato.de>
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`Santiago Salamanca wrote:`

> `Hi, everyone.`
> `in the Data TEAMProblem28 Dr. Meeker define a coil with 960
> Turns
> an another coil with -576 Turns, both with i=20A
> ?How to define the "fill factor" for each coil?
> `

`You have to multiply the conductivity of the bulk coil material by the fill factory and enter that value as the conductivity for a wound region. This is still sort of a kludge--I'm planning to put in a parameter for wire gauge so that the program will figure out the fill factor itself based on the wire size and number of turns.`

> `?Are both coils in serie, oder is a coil as the "PRIMARY" and
> the another as
> the "SECUNDARY" a Transformator?`
> `Thanks`
> `Santiago Salamanca
> `

`For this particular example, both coils are connected together in series (i.e. not like your typical transformer). I did this because this is sort of a benchmark problem, and that's the way that the benchmark was connected. See http://ee.ascs3.uakron.edu/team/problems/problem28.pdf Although FEMM doesn't solve the transient simulation described in the TEAM writeup, one can compare the final steady-state position reported in the writeup with a FEMM simulation.`
`Dave.`
`--
David Meeker
Senior Engineer
Foster-Miller, Inc.
350 Second Avenue
Waltham, MA 02451-1196
781-684-4070
781-890-3489 (fax)
dmeeker@foster-miller.com http://femm.foster-miller.com`

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- References:
  - [FEMM] FILL FACTOR
    - From: Santiago Salamanca <santiago@salamanca.de>

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