Hi,
During my defence, my comitte members advice us to modify the thesis. A minor correction.

Previous title: 
Analysis and Design of High Gain Three-Elements Resonant Soft-Switching Current-fed DC/DC Converters

New title:
Analysis and Design of High Voltage Gain Three-Elements Resonant Soft-Switching Current-fed DC/DC Converters.

This is approved by my supervisor too.
please notice this change.