Re: OLTC - Split core inductors

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Eddie Burwell by way of Terry Fritz <twftesla-at-qwest-dot-net>" <eburwell-at-columbus.rr-dot-com>

In this application the resonant charging inductor is only going to pass
current in one direction. The field is going to swing from zero to
+saturation(or near it). If the core could be biased to -saturation and
swing to +saturation it could be half the physical size. This could be done
with either a bias winding or permant magnets. Permant magnets probably
won't get the core all the way to -saturation, however, they are simple.
Ferrite magnets are nice because they have high resistivity, though their
strength is not so good. NdFeB magnets have lower resistivity and might heat
up a bit, but they would provide a nice bias field.

Food for thought.

Eddie Burwell