Steady State Analysis and Simulation of Phase-shifting Full Bridge Series Resonant Converter

The topology structure of phase-shifting full bridge series resonance (PSFB-SRC) is introduced in this paper. In order to obtain a more accurate converter model, a steady-state analysis method based on Laplace's theorem (LBT) is used to deeply analyze the SRC with variable phase-shifting angle. The models and analytical solutions of steady-state differential equations for different operating modes of resonant circuits were provided, and the expressions of important parameters of PSFB-SRC were obtained. The correctness of the PSFB-SRC model analysis results was verified through simulation.