Hi All,
I am getting a little confused on how to combine models I guess... When I try and incorporate switching loss and conduction loss in the same model, I am getting what I feel as an incomplete model... since the switching loss shows up as a current, when I use i1 and i2 as my ports to incorporate them in the model, the Ron and Vd don't come into play for the large signal model... I get a model that is very similar to Fig 7.56, with the exception of some different d(t) and d'(t) values... I assume that the large signal model should also have Ron and Vd in it, am I incorrect in my thinking?
Olga,
ReplyDeleteYou are right, the large signal model should have Ron and Vd. The large signal model is the model just before the perturb/linearize step that gives the small-signal average switching models we derived in HW 1.
- KT
I can assume the Voff and Ion is the same magnitude for both sets of waveforms? Otherwise, things get pretty messy quick...
ReplyDeleteThis comment has been removed by the author.
DeleteI think Voff and Ion are the same for both waveforms. You can verify this by plugging the average switch model into the buck converter and doing the analysis. Did you solve for v2 and i1?
DeleteAlex,
DeleteThat is where I was heading with it, I will work on it tonight to see where I get.
Olga,
ReplyDeleteHow did it go last night? I re-examined my work and found an algebra error. Now I am stuck on the analysis.
The voltage equation works fine, but I cannot get the current equation into a form that will work with the transformer.
Do you have any additional insight?
Thanks,
Alex
Hi,
ReplyDeletePlease see my comments on this problem with the latest posting. Please let me know if I'm way off track. Thanks.