Stick-slip Oscillations in Resonant Power Converters

This paper presents evidence of the existence of stick-slip oscillations, usually found in mechanical systems with friction, in a class of resonant power converters. It is shown that these converters can exhibit periodic solutions characterized by segments of sliding motion (associated to theoretically infinitely many switchings). Also, numerical and analytical evidence of the occurrence of sliding bifurcations is given. These phenomena have been recently presented in the literature and their occurrence in Power Electronics is here reported for the first time. © 2005 IEEE.