A dynamic model of the LLC resonant converter for control response prediction

摘要

In this paper a dynamic model for the LLC resonant converter suitable for controlrnsystem analysis is derived. By application of the Phasor Transform, a nonlinearrnequivalent circuit model for the converter is obtained which captures the dominantrntransient behaviour. Subsequently a small-signal model for the converter subjectedrnto perturbation about a steady-state operating point is derived by linearisation.