renga92
Member level 5
Any references on how to go about modelling an transformer isolated H bridge buck converter in s or z domain?. I am planning to design a compensator for better closed loop response and stability. All the resources online point to modelling buck converter with a single switch and in non isolated configuration.
Currently for compensator design, I look out for the frequency region where the LC low filter cutoff happens and at that region, the phase response drops almost to -180 degrees. Then I would design a phase lead lag compensator with some phase being added in the frequency region where the phase response drops to -180 degrees. Then I use the same compensator in the SMPS design without taking into account other components present.
It would be great some of you guys can shed some light if approximation made is correct and also provide some resources to gain insight into modelling converters.
Currently for compensator design, I look out for the frequency region where the LC low filter cutoff happens and at that region, the phase response drops almost to -180 degrees. Then I would design a phase lead lag compensator with some phase being added in the frequency region where the phase response drops to -180 degrees. Then I use the same compensator in the SMPS design without taking into account other components present.
It would be great some of you guys can shed some light if approximation made is correct and also provide some resources to gain insight into modelling converters.