Deriving current expression from the info given

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SUMMARY

The discussion focuses on the derivation of equation 4.1.11 from the thesis by Bhavin, specifically addressing the confusion surrounding its origins. The user identifies that equation 4.1.11 is derived from equations 4.1.8 and 4.1.9, where the expression for T(s) is substituted into 4.1.8 to solve for I(s). The user notes that there is no equation 4.2.3, and equation 4.2.2 is unrelated to 4.1.11. The derivation simplifies the expression by factoring out the omega(s) term and consolidating the two j terms into one J term.

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Homework Statement



I am doing some research and reading this: http://www.csuohio.edu/ece/theses/2004/Bhavin.pdf

I don't understand how the equation 4.1.11 on page 67 is derived.
Can anyone help clarify?


Homework Equations


(As in the pdf file)


The Attempt at a Solution


I have tried to understand it, but couldnt.
 
Last edited by a moderator:
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It might be because this expression was not derived from the equations mentioned; in fact there IS no 4.2.3 at all, and 4.2.2 has nothing to do with 4.1.11. It appears this came from 4.1.8 and 4.1.9, where the expression for T(s) is substituted into 4.1.8 which is then solved for I(s). 4.1.11 factors out the omega(s) term and replaces the two j terms with one J term.
 

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