Application of the principle of energy conservation to modeling the PWM converters

Marian K. Kazimierczuk, Dariusz Czarkowski

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Parasitic resistances and offset voltage sources of power switches are included in the averaged-circuit models of an actual switching part of PWM transformerless converters which operate in a continuous conduction mode. The actual switching part is divided into the ideal switching part and its parasitics. It is shown that the ideal switching part can be modeled by one of 24 equivalent averaged circuits, each consisting of a dependent current source and a dependent voltage source. The parasitics are averaged using the principle of energy conservation. The obtained nonlinear large-signal model of the actual switching part can be placed into the buck, boost, and buck-boost topologies leading to averaged-circuit models of power stages. Linearization of the model around a dc operating point results in dc and small-signal models of the converters. Reflection rules are established which can be used to simplify the circuit models. The proposed method is illustrated by modeling the PWM boost converter.

Original languageEnglish (US)
Title of host publicationProceedings of the IEEE Conference on Control Applications
Editors Anon
PublisherPubl by IEEE
Pages291-296
Number of pages6
ISBN (Print)0780309081
StatePublished - 1993
EventProceedings of the 2nd IEEE Conference on Control Applications - BC, BC, Can
Duration: Sep 13 1993Sep 16 1993

Publication series

NameProceedings of the IEEE Conference on Control Applications
Volume1

Other

OtherProceedings of the 2nd IEEE Conference on Control Applications
CityBC, BC, Can
Period9/13/939/16/93

ASJC Scopus subject areas

  • Control and Systems Engineering

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