Full bridge boost converter average curcuit modelling

Thread Starter


Joined Feb 3, 2017
I am attempting to model a full bridge boost converter by means of average circuit modelling. I just need to find out whether the volt sec balance and capacitor charge balance equations I have modelled are correct before I can proceed further and get the transfer function. My attempt is attached. I am new at this so I'd appreciate some insight and guidance where necessary.
Mode 1.
All four switches are on and the load voltage is sustained by the charge in the capacitor.
Mode 2.
Pair S1 is on and a positive voltage appears across the secondary
Mode 3
Same as mode 1
Mode 4
Pair s2 is on and a negative voltage appears across the secondary.