Re: inductor sizing

I am absolutely in awe to the welth of information found here. If I
may? I am working on a similar power supply, with similar requirements
as the origional poster save the 60hz final output. The supply I am
working on will be directly controlling the current with little focus
on the actual voltage.

The Basics, 208Vac 3phase or 220Vac single phase input rectified and
filtered.
I would like to use a bank of mosfets at a switching frequency around
200-250 Khz
Or another possibility would be a large IGBT at around 10-12 Khz.
Drive and controll considerations asside, I am looking for 2% or less
of THD if possible
output current will average 20-35A with a sustained 50A possible. The
output voltage will be anywhere from 95V to as much as 160V DC. The
full voltage of the rectified mains will be on the output untill the
sustained arc is started and at which point the current regulation
will be put to work. The voltage will vary and that is expected but
the current must stay stable. I have a pretty good design on the
controlls and feedback, But...
My question is weather to use a bank of mosfets with there own LC
network each, such as 5 or 6 in parallel with all outputs tied
together, or1 bank of mosfets\IGBT and a single filter?

Much Thanks
Cory
.

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