The coupled inductors L2 and L3 were among the most obvious peculiarities right
from the start and the correct interpretation has been pointed out here by several
respondents before. An IEEE conference paper on this very topic not only is highly interesting, it also proves that history repeats itself in technology too ...
28.5 A 'Zero' Ripple Technique Applicable to any DC Converter

 

Hello Synfonique, I received your conversation but it is marked as closed for replies and locked :-(
I will try to discover how to reply to it (if possible) by contacting the web master so that we can get in touch.