Hybrid Control of Self-Oscillating Resonant Converters

Identifier:  imarina:9268340

Handle: https://hdl.handle.net/20.500.11797/imarina9268340

Authors:  Zaupa, Nicola; Martinez-Salamero, Luis; Olalla, Carlos; Zaccarian, Luca

Abstract:
We describe parallel and series resonant converters (PRC and SRC) via a unified set of input-dependent coordinates whose dynamics are intrinsically hybrid. We then propose hybrid feedback showing a self-oscillating behavior whose amplitude and frequency can be adjusted by a reference input ranging from zero to <inline-formula> <tex-math notation=LaTeX>$\pi$</tex-math> </inline-formula>. For any reference value in that range, we give a Lyapunov function certifying the existence of a unique nontrivial hybrid limit cycle whose basin of attraction is global except for the origin. Our results are confirmed by experimental results on an SRC prototype.