Modelling and control of interleaved parallel converters with nonidentical parameters

Author

Sivakumar, S.C. ; Sivakumar, S. ; Tran, H.P.

Author_Institution

Saint Mary´´s Univ., Halifax, NS, Canada

fYear

2001

fDate

18-18 Oct. 2001

Firstpage

266

Lastpage

273

Abstract

This paper addresses the dynamic modelling and control design of interleaved parallel DC-DC buck (or buck derived) converters with circuit parameter imbalance. It is shown that the imbalance in the filter inductance of the individual converter stages has a great impact on the differential mode stability of the overall system. Control strategies to ensure system stability and current sharing performance both under steady-state and transient conditions are presented with results of simulation and experiments performed on a high-power telecom power converter.

Keywords

DC-DC power convertors; closed loop systems; compensation; electric current control; inductors; stability; telecommunication power supplies; circuit parameter imbalance; closed loop system; control design; current sharing; differential mode stability; dynamic modelling; dynamic response; filter inductance; high-power telecom power converter; inductor imbalance compensation; interleaved parallel DC-DC buck converters; steady-state conditions; system stability; transient conditions;

fLanguage

English

Publisher

iet

Conference_Titel

Telecommunications Energy Conference, 2001. INTELEC 2001. Twenty-Third International

Conference_Location

Edinburgh, UK

ISSN

0537-9989

Print_ISBN

0-85296-744-6

Type

conf

DOI

10.1049/cp:20010609

Filename

988542