Modeling and dynamic analysis of paralleled DC/DC converters with master-slave current sharing control

Author

Rajagopalan, J. ; Xing, K. ; Guo, Y. ; Lee, F.C. ; Manners, Bruce

Author_Institution

Bradley Dept. of Electr. Eng, Virginia Power Electron. Center, VA, USA

Volume

2

fYear

1996

Firstpage

678

Abstract

A simple, application-oriented, transfer function model of paralleled converters employing master-slave current-sharing (MSC) control is developed. Dynamically, the master converter retains its original design characteristics; all the slave converters are forced to depart significantly from their original design characteristics into current-controlled current sources. Five distinct loop gains to assess system stability and performance are identified and their physical significance is described. A design methodology for the current share compensator is presented. The effect of this current sharing scheme on “system output impedance” is analyzed

Keywords

DC-DC power convertors; electric current control; stability; current share compensator; current-controlled current sources; dynamic analysis; loop gains; master converter; master-slave current sharing control; paralleled DC/DC converters; paralleled converters; slave converters; system output impedance; system stability assessment; transfer function model; Centralized control; Circuits; DC-DC power converters; Impedance; Master-slave; NASA; Performance gain; Power system modeling; Power system stability; Voltage control;

fLanguage

English

Publisher

ieee

Conference_Titel

Applied Power Electronics Conference and Exposition, 1996. APEC '96. Conference Proceedings 1996., Eleventh Annual

Conference_Location

San Jose, CA

Print_ISBN

0-7803-3044-7

Type

conf

DOI

10.1109/APEC.1996.500513

Filename

500513