| Abstract |
Measurements that were performed on breadboarded Zero-Voltage Switching Quasi-Resonant Converters
(ZVS-QRCs) demonstrate an important deviation between the theoretical output characteristics which are
obtained from the theoretical analysis, that is based on the assumption of ideal components, and the
experimental ones. The aim of this work is to present a detailed study, based on measurements and
simulations, of different ZVS-QR topologies (Buck, Boost, Buck-Boost and Flyback) and investigate their
real behavioural characteristics. For this purpose a simulation program was developed, in order to evaluate
the losses on each converter component and estimate their influence at the efficiency of the converter.
Moreover, some critical problems concerning the design and the implementation of this kind of converters
are pointed out and analytically discussed, aiming to their easier implementation. |
