Dynamic analysis of parallel-module converter system with current balance controllers

Author

Kohama, Teruhiko ; Ninomiya, Tamotsu ; Shoyama, Masahito ; Ihara, Fumiaki

Author_Institution

Dept. of Electron., Kyushu Univ., Fukuoka, Japan

fYear

1994

fDate

30 Oct-3 Nov 1994

Firstpage

190

Lastpage

195

Abstract

Dynamic response and stability analyses of a parallel-module power converter system with current balance controllers are described. The state-space averaging method is used to obtain a small-signal model for the dynamic analysis. The root locus method is used to discuss the stability of the parallel system. As a result, instability of the parallel system is observed in the system composed of modules with different circuit parameters. Influence of module parameters on the stability of the parallel system is discussed. Analytical results are confirmed experimentally for a two-paralleled forward power converter system

Keywords

PWM power convertors; circuit stability; control system analysis; dynamic response; electric current control; equivalent circuits; feedback; network analysis; power semiconductor switches; power supplies to apparatus; power transistors; proportional control; state-space methods; circuit parameters; current balance controllers; dynamic analysis; dynamic response; forward power converter; instability; parallel-module power converter; proportional feedback control; small-signal model; stability analyses; state-space averaging method; Circuit stability; Control systems; Equivalent circuits; Power system modeling; Power system reliability; Proportional control; Pulse width modulation; Stability analysis; Transducers; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Telecommunications Energy Conference, 1994. INTELEC '94., 16th International

Conference_Location

Vancouver, BC

Print_ISBN

0-7803-2034-4

Type

conf

DOI

10.1109/INTLEC.1994.396656

Filename

396656