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B
BB11-Visitor
1-Visitor
December 18, 2018
Solved

Mathcad prime 5.0

  • December 18, 2018
  • 3 replies
  • 7389 views

I wanted to create the Y BUS matrix from Netlist and solve that to get currents and voltages of each node.

 

For this i need to know how to solve the AX=B in matrix format, if all matrices(A,X and B) having variables only,

I want X in terms of Varibales(eqn)

 

Please check the 29th page of this pdf:

http://www3.imperial.ac.uk/pls/portallive/docs/1/7292571.PDF

Best answer by Werner_E

You may possibly be able to do what you are looking for, but as long as an expression contains an unknown/undefined variable you obviously can't evaluate that expression or function numerically (that means using the normal =).

3 replies

T
21-Topaz II
terryhendicott21-Topaz II
21-Topaz II
December 18, 2018

Hi,

 

you just use:-

 

 

Regards

Terry

T
21-Topaz II
terryhendicott21-Topaz II
21-Topaz II
December 18, 2018

Hi,

 

I will try this post again to get the graphic:

 

You just use:-

 

Capture.JPG

 

Cheers

Terry

B
BB11-VisitorAuthor
1-Visitor
December 18, 2018

Please check the attachment, that one i am not able to solve

T
21-Topaz II
terryhendicott21-Topaz II
21-Topaz II
December 18, 2018

Hi,

 

The inverse of a matrix times the matrix is the identity matrix (all zeros except diagonals being one)

Capture.JPG

Cheers Terry

W
Werner_E25-Diamond I
25-Diamond I
December 18, 2018

Do you really need a general symbolic solution? It looks a bit uncomfortable:

B1.PNG

Wouldn't do a numerical solution do the job good enough?

You may either use the matrix approach or a solve block with the original node equations.

B2.PNG

B
BB11-VisitorAuthor
1-Visitor
December 19, 2018
I need the solution in symbolically..means interms of variables like in X,y
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