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Re: Charging inductors for resonant charging
Original poster: Finn Hammer <f-h-at-c.dk>
Ed Phillips (who commands my unlimited respect) wrote:
>Real designers step forward?<
Obviously not being that, I am creeping along the floor panels, to offer
Finite Elements Method Magnetics
It is a distribution called FEMM, a magnetics field solver. As one of the
design training exersises, the design of an inductor on a gapped core is
covered in detail.
For the likes of Jim, it should be a piece of cake to use.
I have done some work in DC excited magnetostatics with it, and the results
were corresponding with those that I got with the 3000USD Magneto program,
Hope it helps, Finn Hammer
(to whom it would be a "Wind it on a couple of MOT cores to get a seat of
the pants feeling of the subject" kind of thing)
Tesla list wrote:
>Original poster: Ed Phillips <evp-at-pacbell-dot-net>
>Tesla list wrote:
> > Original poster: Jim Lux <jimlux-at-earthlink-dot-net>
> > What sort of sources are there for a 5-15 Henry charging inductor for a
> > resonant charging circuit? RMS current would be in the 1-2 Amp range.
> > Is this a "wind it on a MOT core" kind of thing?
> I'm no a magnetics designer but that sounds like a HUGE device to me!
>If the charging frequency was 120 Hz the reactance of the 5 henry choke
>would be about 3770 ohms and the voltage across it at 1 amp would then
>be 3770 volts. If it is to pass 1 amp the wire size would probably have
>to be around #22 even for intermittent operation, and the resulting wire
>area would require a large core. Real designers step forward?