Re: [TCML] DRSSTC weird waveform behavior

[Michael Twieg <mdt24@xxxxxxxx>]

You don't really need an adjustable inductor to do the whole phase lead
thing.  A fixed inductor with a variable resistor in parallel will give the
same effect.  After all, you just want the impedance of the CT burden to be
slightly inductive.

-Mike

On Fri, Jul 1, 2011 at 6:43 PM, Justin B <boshjack@xxxxxxxxxxx> wrote:

>
> I just wasn't sure, But I plan to try some adjustable inductors with
> resistor in parallel with my feedback CT, and try to adjust the phase lead,
> similar to how Finn did his.  I plan to put the resistor back to 5 ohms and
> adjust the phase.  But yeah, those squiggles lost most people I sent it to.
>  Will be fun finding a method to fix that one!
>
> > Date: Fri, 1 Jul 2011 18:26:20 -0400
> > Subject: Re: [TCML] DRSSTC weird waveform behavior
> > From: mdt24@xxxxxxxx
> > To: tesla@xxxxxxxxxx
> >
> > The "squiggles" on your output voltage are probably caused by a resonance
> > formed by your DC bus capacitors and their parasitic inductance, and the
> > parasitic inductance of the bus bars.  It can be pretty nasty, especially
> if
> > that resonant frequency is anywhere close to your drive frequency.
> >
> > Also why do you think increasing the gate resistors will help with zero
> > crossing?  That will just slow the switching down, not speed it up.
> >
> > -Mike
> >
> > On Fri, Jul 1, 2011 at 6:01 PM, Justin B <boshjack@xxxxxxxxxxx> wrote:
> >
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