Input filter interactions in current-mode controlled converters-a unified analysis approach

Author

Suntio, Teuvo ; Gadoura, Idris ; Zenger, Kai

Author_Institution

Electron. Lab., Oulu Univ., Finland

Volume

2

fYear

2002

fDate

5-8 Nov. 2002

Firstpage

1179

Abstract

A unified analysis approach in assessing the effect of an input filter on the performance of a current-mode controlled converter is presented. The analysis method is based on the use of two-port unterminated modeling technique. The describing formulas to assess the input-filter effect are presented based on the transfer functions of direct-duty-ratio control with modifications caused by the effect of inductor-current feedback in peak-current control. The analysis shows that the behavior of input impedance explains the phenomena noticed earlier.

Keywords

electric current control; equivalent circuits; feedback; filters; inductors; power convertors; transfer functions; two-port networks; current-mode controlled converters; direct-duty-ratio control; equivalent circuit; inductor-current feedback; input filter interactions; input impedance behaviour; input-filter effect; peak-current control; transfer functions; two-port unterminated modeling technique; unified analysis approach; Buck converters; Electromagnetic interference; Feedback; Filters; Inductors; Laboratories; Performance analysis; Phase change materials; Switching converters; Transfer functions;

fLanguage

English

Publisher

ieee

Conference_Titel

IECON 02 [Industrial Electronics Society, IEEE 2002 28th Annual Conference of the]

Print_ISBN

0-7803-7474-6

Type

conf

DOI

10.1109/IECON.2002.1185440

Filename

1185440