Modeling and analysis of a self-oscillating peak-current controlled flyback converter

Juha Lempinen; Teuvo Suntio

doi:10.1109/IECON.2001.975896

Abstract

Modeling of a self-oscillating peak-current controlled flyback converter is presented. Transfer functions describing the output dynamics of a flyback converter are obtained by applying partial derivatives to the nonlinear state equations that are derived using proposed modeling method. Loop gain of a practical 3-W flyback converter was measured and compared to predictions. The time delay in boundary mode showed not significant influence on the converter dynamics in the load range of interest. The non-minimum phase characteristics of a flyback converter will limit the achievable controller bandwidth also in a variable-frequency operation similarly to the fixed-frequency operation in CICM and DICM.

Original language	English
Pages	960-965
Number of pages	6
DOIs	https://doi.org/10.1109/IECON.2001.975896
Publication status	Published - 1 Dec 2001
Externally published	Yes
Publication type	Not Eligible
Event	27th Annual Conference of the IEEE Industrial Electronics Society IECON'2001 - Denver, CO, United States Duration: 29 Nov 2001 → 2 Dec 2001

Conference

Conference	27th Annual Conference of the IEEE Industrial Electronics Society IECON'2001
Country/Territory	United States
City	Denver, CO
Period	29/11/01 → 2/12/01

ASJC Scopus subject areas

Control and Systems Engineering
Electrical and Electronic Engineering

Access to Document

10.1109/IECON.2001.975896

Cite this

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title = "Modeling and analysis of a self-oscillating peak-current controlled flyback converter",

abstract = "Modeling of a self-oscillating peak-current controlled flyback converter is presented. Transfer functions describing the output dynamics of a flyback converter are obtained by applying partial derivatives to the nonlinear state equations that are derived using proposed modeling method. Loop gain of a practical 3-W flyback converter was measured and compared to predictions. The time delay in boundary mode showed not significant influence on the converter dynamics in the load range of interest. The non-minimum phase characteristics of a flyback converter will limit the achievable controller bandwidth also in a variable-frequency operation similarly to the fixed-frequency operation in CICM and DICM.",

author = "Juha Lempinen and Teuvo Suntio",

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doi = "10.1109/IECON.2001.975896",

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AU - Suntio, Teuvo

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N2 - Modeling of a self-oscillating peak-current controlled flyback converter is presented. Transfer functions describing the output dynamics of a flyback converter are obtained by applying partial derivatives to the nonlinear state equations that are derived using proposed modeling method. Loop gain of a practical 3-W flyback converter was measured and compared to predictions. The time delay in boundary mode showed not significant influence on the converter dynamics in the load range of interest. The non-minimum phase characteristics of a flyback converter will limit the achievable controller bandwidth also in a variable-frequency operation similarly to the fixed-frequency operation in CICM and DICM.

AB - Modeling of a self-oscillating peak-current controlled flyback converter is presented. Transfer functions describing the output dynamics of a flyback converter are obtained by applying partial derivatives to the nonlinear state equations that are derived using proposed modeling method. Loop gain of a practical 3-W flyback converter was measured and compared to predictions. The time delay in boundary mode showed not significant influence on the converter dynamics in the load range of interest. The non-minimum phase characteristics of a flyback converter will limit the achievable controller bandwidth also in a variable-frequency operation similarly to the fixed-frequency operation in CICM and DICM.

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DO - 10.1109/IECON.2001.975896

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T2 - 27th Annual Conference of the IEEE Industrial Electronics Society IECON'2001

Y2 - 29 November 2001 through 2 December 2001