Sliding mode control for current distribution in DC-to-DC converters connected in parallel

Author

Donoso Garcia, P.F. ; Cortizo, Porfirio C. ; De Menezes, Benjamim R. ; Mendes, Marcos A Severo

Author_Institution

Federal Univ. of Minas Gerais, Brazil

Volume

2

fYear

1996

fDate

23-27 Jun 1996

Firstpage

1513

Abstract

This paper presents a novel control scheme for current distribution in parallel connected DC-to-DC converters. It uses a sliding-mode controller (SMC) to achieve both output current equalization and output voltage regulation. The controller improves the dynamic performance of a parallel buck converter: the output voltage is robust against load disturbances and the output currents are very well equalized. An analysis and design of the sliding mode controller is developed. Simulation and experimental results are presented, showing a good dynamic performance of the control scheme proposed

Keywords

DC-DC power convertors; control system synthesis; controllers; electric current control; variable structure systems; voltage control; DC-to-DC converters; current distribution; dynamic performance; output current equalization; output voltage regulation; parallel buck converter; parallel connected converters; sliding-mode controller; Control systems; Current distribution; DC-DC power converters; Power supplies; Power system reliability; Sliding mode control; Switching converters; Three-term control; Variable structure systems; Voltage control;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics Specialists Conference, 1996. PESC '96 Record., 27th Annual IEEE

Conference_Location

Baveno

ISSN

0275-9306

Print_ISBN

0-7803-3500-7

Type

conf

DOI

10.1109/PESC.1996.548782

Filename

548782