Energy-conservation approach to modeling PWM DC-DC converters

Author

Czarkowski, Dariusz ; Kazimierczuk, Marian K.

Author_Institution

Dept. of Electr. Eng., Wright State Univ., Dayton, OH

Volume

29

Issue

3

fYear

1993

fDate

7/1/1993 12:00:00 AM

Firstpage

1059

Lastpage

1063

Abstract

A systematic method is presented for including parasitic resistances and offset voltage sources of power switches in averaged dynamic large-signal, DC, and small-signal circuit models of pulse-width modulated (PWM) converters operating in continuous conduction mode (CCM). This method is based on the principle of energy conservation. The approach takes into account the inductor current ripple. For zero-ripple current, the method gives the same results as the state-space averaging method. Reflection rules are introduced and used to simplify the models. As an example, a modeling procedure for the PWM buck converter is detailed

Keywords

equivalent circuits; network analysis; power convertors; pulse width modulation; state-space methods; switching circuits; DC; PWM DC-DC converters; PWM buck converter; continuous conduction mode; dynamic large signal model; energy conservation; equivalent circuits; inductor current ripple; offset voltage sources; parasitic resistances; power switches; reflection rules; small-signal circuit models; state-space averaging; zero-ripple current; DC-DC power converters; Energy conservation; Inductors; Power system modeling; Pulse circuits; Pulse width modulation; Pulse width modulation converters; Reflection; Switching converters; Voltage;

fLanguage

English

Journal_Title

Aerospace and Electronic Systems, IEEE Transactions on

Publisher

ieee

ISSN

0018-9251

Type

jour

DOI

10.1109/7.220955

Filename

220955