Re: [TCML] IGBT paralleling

["Finn Hammer" <f-h@xxxx>]

On Thu, 15 Jul 2010 01:04:58 +0200, Scott Bogard <sdbogard@xxxxxxxxx>  
wrote:
snip

 Also I'm hearing about IGBT modules, what are they, what do they
> do, can they be used for coiling purposes...  Thanks for your patience  
> guys, interesting good info even if my original question is still opaque  
> to me.
>
> Scott Bogard.

Holy cow, I just snipped 8 replies deep......


Scott,

I cannot say about parallelling, and then....

IGBT modules are what is also referred to as Bricks.
They are the large.... arh - well - erh  -  you know   -   Bricks or  
modules      we use in the large coils, like Steve's and my Thumper.

It is interesting that these Modules internally consist of parallelled   
IGBT and Freewheling diode dies.

These dies are bussed in a fasion that allow them to operate within their  
specksheet ratings.
I seem to recall one very large full bridge which didn't last long, due to  
the inductive limitation of the internal bussing, which lead to  
catastriphic failure of the dies in just one end of the module.

What this tells me is, that with proper attention to layout, you can  
parallell IGBT's, but that doing so is a pain, and that most of us would  
just go get a brick and be done with it.


Cheers, Finn Hammer
_______________________________________________
Tesla mailing list
Tesla@xxxxxxxxxx
http://www.pupman.com/mailman/listinfo/tesla