Stabilizing the Nonlinear Dynamic Behavior of LLC Resonance Full-Bridge DC-DC Converter Under Voltage Mode Control

Author

Fan Xie ; Bo Zhang ; Dongyuan Qiu

Author_Institution

Sch. of Electr. Power, South China Univ. of Technol., Guangzhou, China

fYear

2014

fDate

5-8 Nov. 2014

Firstpage

1093

Lastpage

1097

Abstract

In this paper, a simple control method is presented to stabilize the nonlinear dynamic behavior of LLC resonance full-bridge DC-DC converter under voltage mode control based on the conventional delay time feedback, resonant parametric perturbation and self-stable control methods. First, the mathematical model of LLC resonance full-bridge DC-DC converter under voltage mode control are built. Second, the dynamic behaviors of the system is analyzed and the system is lost stability by border collision and Neimark-Saker bifurcation. Finally, the simple controller is introduced by sampling the primary inductor current of the transformer, and then the simulation results show that the dynamic behaviors can be stabilized by this controller.

Keywords

DC-DC power convertors; stability; voltage control; LLC resonance full-bridge DC-DC converter; Neimark-Saker bifurcation; border collision; conventional delay time feedback; lost stability; mathematical model; nonlinear dynamic behavior; resonant parametric perturbation; self-stable control method; transformer primary inductor current; voltage mode control; Bifurcation; DC-DC power converters; Delays; Feedback control; Nonlinear dynamical systems; Orbits; Voltage control; LLC resonance full-bridge DC-DC converter; delayed feedback control; nonlinear behavior; parametric resonance perturbation; self-stable control;

fLanguage

English

Publisher

ieee

Conference_Titel

Electronics and Application Conference and Exposition (PEAC), 2014 International

Conference_Location

Shanghai

Type

conf

DOI

10.1109/PEAC.2014.7038013

Filename

7038013