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From: "Frank W." <yohansan@web.de>
Newsgroups: comp.soft-sys.matlab
Subject: Re: universal bridge
Date: Wed, 25 Nov 2009 09:15:22 +0000 (UTC)
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"simione civoniceva" <s_civoniceva@yahoo.com> wrote in message <hefrc2$q98$1@fred.mathworks.com>...
> Dear All
> Below is a block parameters for Universal Bridge, can anyone tell me if there is any proble with it and what i can do to correct it
> 
> Number of bridge arms:         3
> Snubber resistance     :         1e5
> snubber capacitance   :         inf
> Power Electronics device:      IGBT/Diodes
> Ron (ohms)                  :      1e-3
> Forward Voltage            :      [0 0]
> [Tf(s) , Tt(s)]               :      [1e-6, 2e-6]
> Measurements              :       All voltages and current

Hi,
I do not know what impact the zero values of the Forward voltage have on the simulation. I always used values from datasheets and the simulations turned out well. Concerning the snubber capacitance value I suggest looking at the help for the universal bridge in which useful hints are given.

Regards
Frank