A model for stability study of PFC power supplies

Grace Chu; Chi Kong Tse; Siu Chung Wong

doi:10.1109/PESC.2007.4342181

A model for stability study of PFC power supplies

Grace Chu, Chi Kong Tse, Siu Chung Wong

Research output: Chapter in book / Conference proceeding › Conference article published in proceeding or book › Academic research › peer-review

6 Citations (Scopus)

Abstract

Typically a power-factor-correction power supply consists of two stages, one responsible for power factor correction and the other for voltage regulation. In this paper, we propose to use a constant power sink to represent the voltage regulating stage, resulting in an analytically tractable model that is able to predict the period-doubled oscillations at line frequency which are not detectable by other conventional models. Using a generalized averaging approach, we investigate the lowfrequency dynamics and derive closed-form stability conditions which accurately locate the stability boundaries on selected parameter planes. The model can be conveniently used to evaluate the performance of power-factor-correction power supplies, such as harmonic distortion and power factor. Experimental results are presented to verify the model.

Original language	English
Title of host publication	PESC 07 - IEEE 38th Annual Power Electronics Specialists Conference
Pages	1298-1303
Number of pages	6
DOIs	https://doi.org/10.1109/PESC.2007.4342181
Publication status	Published - 1 Dec 2007
Event	PESC 07 - IEEE 38th Annual Power Electronics Specialists Conference - Orlando, FL, United States Duration: 17 Jun 2007 → 21 Jun 2007

Conference

Conference	PESC 07 - IEEE 38th Annual Power Electronics Specialists Conference
Country	United States
City	Orlando, FL
Period	17/06/07 → 21/06/07

ASJC Scopus subject areas

Modelling and Simulation
Condensed Matter Physics
Energy Engineering and Power Technology
Electrical and Electronic Engineering

More information

10.1109/PESC.2007.4342181

Cite this

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title = "A model for stability study of PFC power supplies",

abstract = "Typically a power-factor-correction power supply consists of two stages, one responsible for power factor correction and the other for voltage regulation. In this paper, we propose to use a constant power sink to represent the voltage regulating stage, resulting in an analytically tractable model that is able to predict the period-doubled oscillations at line frequency which are not detectable by other conventional models. Using a generalized averaging approach, we investigate the lowfrequency dynamics and derive closed-form stability conditions which accurately locate the stability boundaries on selected parameter planes. The model can be conveniently used to evaluate the performance of power-factor-correction power supplies, such as harmonic distortion and power factor. Experimental results are presented to verify the model.",

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AB - Typically a power-factor-correction power supply consists of two stages, one responsible for power factor correction and the other for voltage regulation. In this paper, we propose to use a constant power sink to represent the voltage regulating stage, resulting in an analytically tractable model that is able to predict the period-doubled oscillations at line frequency which are not detectable by other conventional models. Using a generalized averaging approach, we investigate the lowfrequency dynamics and derive closed-form stability conditions which accurately locate the stability boundaries on selected parameter planes. The model can be conveniently used to evaluate the performance of power-factor-correction power supplies, such as harmonic distortion and power factor. Experimental results are presented to verify the model.

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