Title

Stability analysis of a feedback-controlled resonant DC-DC converter

Document Type

Journal Article

Publisher

IEEE

Faculty

Faculty of Computing, Health and Science

School

School of Engineering

RAS ID

8888

Comments

Dranga, O., Buti, B., & Nagy, I. (2003). Stability analysis of a feedback-controlled resonant DC-DC converter. IEEE Transactions on Industrial Electronics, 50(1), 141-152.

Abstract

This paper reports on the stability analysis of one member of a dual-channel resonant DC-DC converter family. The study is confined to the buck configuration in symmetrical operation. The output voltage of the converter is controlled by a closed loop applying constant-frequency pulsewidth modulation. The dynamic analysis reveals that a bifurcation cascade develops as a result of increasing the loop gain. The trajectory of the variable-structure piecewise-linear nonlinear system pierces through the Poincare plane at the fixed point in state space when the loop gain is small. For stability criterion the positions of the characteristic multipliers of the Jacobian matrix belonging to the Poincare map function defined around the fixed point located in the Poincare plane is applied. In addition to the stability analysis, a bifurcation diagram is developed showing the four possible states of the feedback loop: the periodic, the quasi-periodic, the subharmonic, and the chaotic states. Simulation and test results verify the theory.

DOI

10.1109/TIE.2002.804983

 
COinS
 

Link to publisher version (DOI)

10.1109/TIE.2002.804983