Large-signal analysis of a DC-DC buck power converter operating with constant power load

Author

Rivetta, C. ; Williamson, Geoffrey A.

Author_Institution

Dept. of Electr. & Comput. Eng., Illinois Inst. of Technol., Chicago, IL, USA

Volume

1

fYear

2003

fDate

2-6 Nov. 2003

Firstpage

732

Abstract

The dynamic properties of the buck converter operating with a constant power load are studied in this paper. This configuration is present in DC-DC converters feeding power converters tightly regulated in multi-converter power electronics systems. The dynamic behavior of converters loaded by constant power loads differs from the behavior of converters loaded by resistors or current generators. The purpose of this paper is to address the closed-loop behavior of the buck converter feeding a constant power load. Based on a comprehensive large-signal analysis of the converter, the basin of attraction of the equilibrium point is defined. This region, in general, excludes the low range of the output voltage affecting the transient stability, forcing proper coordination between the converter and loads during start-up.

Keywords

DC-DC power convertors; closed loop systems; power electronics; stability; DC-DC buck power converter; closed loop behavior; constant power load; current generators; dynamic behavior; dynamic properties; equilibrium point; large signal analysis; multiconverter power electronics systems; start up process; transient stability; Buck converters; DC-DC power converters; Inductors; Power generation; Power system modeling; Pulse width modulation; Resistors; Switches; Switching converters; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Industrial Electronics Society, 2003. IECON '03. The 29th Annual Conference of the IEEE

Print_ISBN

0-7803-7906-3

Type

conf

DOI

10.1109/IECON.2003.1280073

Filename

1280073