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-MFra-21-Topaz II
21-Topaz II
November 12, 2019
Question

LTI Network analysis with the incidence matrix method

  • November 12, 2019
  • 2 replies
  • 4074 views

Hi ALL,

To whom of interest:

analysis of a linear time-invariant electric network, with the incidence matrix method. However, something is not correct for me, see last photo (there is the sum of an integer number and an inductive admittance, that is the dimensions of both terms aren't the same). Where is the mistake?.MNA example.jpgMNA example1.jpg

MNA example2.jpgMNA example3.jpgMNA example4.jpgMNA example5.jpgMNA example6.jpgMNA example7.jpgSomething is missing here.jpg

2 replies

S
StuartBruff23-Emerald V
23-Emerald V
November 12, 2019

Sorry, I don't have access to Mathcad at the moment.  What's Rim1 - I can't see the definition in the pages you've shown?

 

Stuart

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-MFra-21-Topaz IIAuthor
21-Topaz II
November 12, 2019

Hi,
Rim is simply the acronym for Reduced incidence matrix. I'm sorry, two pages were missing, but a little while ago I added them.

S
StuartBruff23-Emerald V
23-Emerald V
November 12, 2019

OK, thanks.   The first question is are you sure that the branch admittance matrix is correct?  It looks dimensionally incorrect, at first glance.

 

Stuart

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-MFra-21-Topaz IIAuthor
21-Topaz II
December 8, 2019

I made the necessary corrections (see attached file).

Since, opening the file with the extension .xmcd, the jpeg, or other types of images, are moved downwards in the file, I attach a pdf file to compare both files so as correct the above "defect" of Mathcad.

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