Anyone else made it to part e) of the buck-boost problem in HW4?
I get mired in ugly algebra when trying to calculate the efficiency or M(D) of the full buck-boost (including switching loss) analytically. I can come up with an expression that only has D, D', V, Vg, and the given constants, but it's so big I'm afraid I've missed a good simplifying assumption.
I've tried making some approximations to get rid of the ugliest bits, but want to be sure I'm not missing a key piece here.
2 comments:
It didn't turn out too nasty for me, remember that you have values for D, V, and Vg.
You only know D if you assume it's unchanged from the earlier part of the problem (w/o switching loss) - that's a pretty decent assumption, but it's the one I got hung up on early on.
Post a Comment