hello everyone
i am studying the paper titled-
"Electromagnetic Energy Harvesting Circuit With Feedforward and Feedback DC–DC PWM Boost Converter for Vibration Power Generator System"
(Xinping Cao, Wen-Jen Chiang, Ya-Chin King, Member, IEEE, and Yi-Kuen Lee, Member, IEEE)
I cannot get the derivation of the equation3 and 4 (page 681). Can anyone tell me how the equations has been derived.
I am uploading the relevant diagrams and equations only for quick reference.