Calculation and stability investigation of periodic steady states of the voltage controlled Buck DC-DC converter

Author

Papafotiou, Georgios A. ; Margaris, Nikos I.

Author_Institution

Dept. of Electr. & Comput. Eng., Aristotle Univ. of Thessaloniki, Greece

Volume

19

Issue

4

fYear

2004

fDate

7/1/2004 12:00:00 AM

Firstpage

959

Lastpage

970

Abstract

A new method for investigating the complex dc-dc converters dynamics is suggested in this paper. The method is based on the formulation of a nonlinear difference equation with respect to the duty cycle. This equation embodies the nonlinear and discrete-time characteristics of dc-dc converters and allows both the calculation of normal and subharmonic steady states and their local stability analysis. The method is presented through the analysis of a voltage controlled Buck dc-dc converter.

Keywords

DC-DC power convertors; PWM power convertors; discrete time systems; nonlinear differential equations; stability; voltage control; duty cycle; local stability analysis; nonlinear difference equation; nonlinear discrete-time analysis; periodic steady states; stability investigation; subharmonic oscillations; subharmonic steady states; voltage controlled buck DC-DC converters; Difference equations; Frequency; Open loop systems; Pulse width modulation; Space vector pulse width modulation; Stability; Steady-state; Switches; Switching converters; Voltage control; DC–DC power conversion; nonlinear discrete-time analysis; subharmonic oscillations;

fLanguage

English

Journal_Title

Power Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0885-8993

Type

jour

DOI

10.1109/TPEL.2004.830040

Filename

1310382