Performance prediction of third-order series resonant convertor

摘要

The steady-state analysis of a modified resonant series DC/DC power convertor with an LLC resonant circuit operating under frequency control in the continuous-conduction mode is considered. A describing function and harmonic balance techniques are applied to the power convertor large-signal nonlinear equations to obtain steady-state equations. The input and output rectifiers and output transformer are also included in the analysis. Steady-state calculations compare fairly well with experimental results.