Re: Wild Idea OLTC - Split core inductors

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

Original poster: "Terry Fritz" <twftesla-at-qwest-dot-net>

Hi Richard,

I tried this:

http://hot-streamer-dot-com/temp/OLTC08-17-01.gif

Both caps charge to 100 volts each but the diodes between them won't allow
current to flow.  The output terminals are the same as the output of the
first bridge rectifier.

I tried to fix this by putting the IGBTs between the caps and fire the
IGBTs on the zero voltage crossing:

http://hot-streamer-dot-com/temp/OLTC08-17-02.gif

Problem here is that the primary coil is directly across the output of the
bridge rectifier.  It draws about 5000 amps off the AC line ;-)

The whole thing seems promising, but I just don't see how to make it work.  

Cheers,

	Terry


At 12:59 PM 8/17/2002 -0400, you wrote:
>8/17/02
>
>Terry,
>
>If you want higher peak voltage just use a voltage doubler and eliminate
>the inductors.  It will only take a few additional diodes.  Nothing is for
>free though.  There will be additional power required from the bridge. 
>But, Hey! More power through put to the coil -- that's a good thing. I'll
>try to draw a schematic, scan it and send a jpg file to you.  There are
>innumerable voltage multiplier schemes and I'm sure everyone has their
>favorites.
>
>As for the timer pulse -- move the CT up to where it senses current just
>past the bridge.  Then you are more free to choose Cf capacitance.  For
>simplicity, I understand why you still tie switch firing to the mains AC
>frequency.  This does create overall severe coil performance problems as
>does having the switch in series in the primary LC tank which destroys
>synergy between the primary and secondary coil.  Future generation low
>voltage coils will, no doubt, require good DC voltage filtering if not DC
>voltage regulation and complete control of switch firing disassociated from
>the mains frequency.  Also, by necessity the switch will be outside the
>primary LC tank.  This will permit synergy and resonance will reign.
>
>