Quasi-periodic route to chaos in load resonant DC-DC converters

This paper reports first time, both numerically and experimentally, the quasi-periodic, subharmonic and chaotic behavior in a phase shift modulated load resonant converter. The study presented in this paper is restricted to third order seriesparallel load resonant converter. From hybrid system point of view, the system consists of four switching surfaces and nine possible modes. After undergoing a Hopf bifurcation of a period-one orbit, quasi-periodic behavior is obtained. Two kinds of route lead to the chaotic operation: a quasi-periodic one and a period doubling scenario.