Re: [TCML] SISG success

[bartb <bartb@xxxxxxxxxxxxxxxx>]

Hi Phil,

Thinking a little more about this scenario, it seems to me the best way 
to use our standard high voltage switching (9kv to 15kv rms) would be to 
throw enough Sidac's in series for the initial switching and then gate a 
"big" high current brick (versus putting a bunch of sidac's and gates in 
the mix and hoping timing is close enough). This method complicates 
switching with each and every device.

Bart

bartb wrote:
> Hi Phil,
>
> Given your using a large quantity of boards, is it possible that 
> timing regarding Sidac switching becomes more of an issue with more 
> boards in series? Maybe higher voltage systems are more prone to 
> breakdown? In other words, given say 20kV across the string of boards, 
> if one board switches first, does this put the others at risk? The 
> 20kV is then felt across the remaining boards (up until all the gates 
> take over).
>
> Regards,
> Bart
>
> FIFTYGUY@xxxxxxx wrote:
> > That's very encouraging! But I've found bad SIDACs  in the same 
> > module where the IGBT was fine (and vice versa). Any theories on why  
> > the same SIDACs last longer in brick SISG use?
> >  
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