Solving the DC DC Converter Dynamic Equations

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BlackMelon

Joined Mar 19, 2015
173
Hello,

I am solving the SEPIC converter's dynamic equations. The circuit and component values are on the pdf file. I wrote a MATLAB code to solve those equations (notepad file). I fixed the duty ratio to be 80%, and expected the state x4 to be 4 at its equilibrium point (steady state), according to the equation 2.57. However, the result in incorrect. Is there a problem with ode45? Could you please give me some suggestions?

Thank You
BlackMelon
 

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