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21-Topaz II
October 11, 2022
Solved

Cut-set analysis of an electric network

  • October 11, 2022
  • 5 replies
  • 2840 views

Hello everyone.

I publish a work done with MATHCAD 15. I don't think you can do the same with PRIME. What do you think about it?

Esempio di analisi in base insiemi di taglio con l'uso di MATHCAD 15 - 1.jpg

Esempio di analisi in base insiemi di taglio con l'uso di MATHCAD 15 - 2.jpg

Esempio di analisi in base insiemi di taglio con l'uso di MATHCAD 15 - 3.jpg

Esempio di analisi in base insiemi di taglio con l'uso di MATHCAD 15 - 4.jpg

Esempio di analisi in base insiemi di taglio con l'uso di MATHCAD 15 - 5.jpg

Esempio di analisi in base insiemi di taglio con l'uso di MATHCAD 15 - 6.jpg

Esempio di analisi in base insiemi di taglio con l'uso di MATHCAD 15 - 7.jpg

Esempio di analisi in base insiemi di taglio con l'uso di MATHCAD 15 - 8.jpg

Esempio di analisi in base insiemi di taglio con l'uso di MATHCAD 15 - 9.jpg

Esempio di analisi in base insiemi di taglio con l'uso di MATHCAD 15 - 10.jpg

 

 

 

Best answer by -MFra-

Shielded inductances assumption.

5 replies

-MFra-21-Topaz IIAuthorAnswer
21-Topaz II
October 11, 2022

Shielded inductances assumption.

-MFra-21-Topaz IIAuthor
21-Topaz II
October 12, 2022
Sorry on page 6, we need to correct the sentence: " ad ogni ramo del co-albero..." con "ad ogni ramo dell'albero..."
ttokoro
21-Topaz I
21-Topaz I
October 14, 2022

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t.t.
-MFra-21-Topaz IIAuthor
21-Topaz II
October 14, 2022

Yes, good work. You used the "by inspection" method, but it doesn't lend itself to analysis automation. To find, then, the currents and voltages in each branch you have to proceed with the same method.  My work is an application of analysis based on fundamental cuts. In the case of "cut-set" analysis of a different circuit, it is sufficient to change the  cut-set matrix, the branch -impedance matrix and change the dimensions of the vectors and something else, obtaining voltages and currents in all the branches. Furthermore, I assumed that there are no mutual inductances. In this case everything becomes more complicated, even the analysis by inspection. For example, let's analyze the case in which there is a mutual inductance between two inductances.

-MFra-21-Topaz IIAuthor
21-Topaz II
October 14, 2022

Undoubtedly the analysis by inspection is the most used in the analysis of small circuits. However, I would avoid having large numbers appear in the formulas.
To verify the results, I am going to apply the methods based on sets of pairs of knots and fundamental links.

23-Emerald IV
October 14, 2022

" I don't think you can do the same with PRIME."

I think differently, see here: https://community.ptc.com/t5/Mathcad/Cut-set-based-Network-analysis/m-p/830293#M203208

 

Success!
Luc

-MFra-21-Topaz IIAuthor
21-Topaz II
October 18, 2022

Correction: the elements of the N.R matrix are all positive.