Line-frequency instability of three-phase PFC power supplies connecting to non-ideal power grid

Meng Huang; Chi Kong Tse; Siu Chung Wong

doi:10.1109/ISCAS.2012.6271707

Line-frequency instability of three-phase PFC power supplies connecting to non-ideal power grid

Meng Huang, Chi Kong Tse, Siu Chung Wong

The Hong Kong Polytechnic University

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

2 Citations (Scopus)

Abstract

Three-phase voltage source converters (VSC) are commonly used to convert ac power from a three-phase grid to a regulated dc voltage with unity input power factor. The output voltage regulation is normally achieved by an outer voltage feedback loop and a sinusoidal pulse-width-modulated (SPWM) inner current loop. However, the non-ideal power grid may drive the VSC to enter line-frequency instability region. In this paper, a line-frequency instability phenomenon in three-phase voltage-source converters is reported. The converter can also be regarded as exhibiting a Hopf-type bifurcation in which the dc output voltage oscillates at about 130 Hz, and large amount of harmonics appear on the line current. We develop an averaged model of the VSC and non-ideal power grid which can predict the Hopf-type bifurcation. The effects of circuit and grid parameters can be studied with this model, and are verified though cycle-by-cycle simulations. The simulations also provide design-oriented boundaries of operation.

Original language	English
Title of host publication	ISCAS 2012 - 2012 IEEE International Symposium on Circuits and Systems
Pages	213-216
Number of pages	4
DOIs	https://doi.org/10.1109/ISCAS.2012.6271707
Publication status	Published - 28 Sept 2012
Event	2012 IEEE International Symposium on Circuits and Systems, ISCAS 2012 - Seoul, Korea, Republic of Duration: 20 May 2012 → 23 May 2012

Conference

Conference	2012 IEEE International Symposium on Circuits and Systems, ISCAS 2012
Country/Territory	Korea, Republic of
City	Seoul
Period	20/05/12 → 23/05/12

ASJC Scopus subject areas

Hardware and Architecture
Electrical and Electronic Engineering

More information

10.1109/ISCAS.2012.6271707

Cite this

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title = "Line-frequency instability of three-phase PFC power supplies connecting to non-ideal power grid",

abstract = "Three-phase voltage source converters (VSC) are commonly used to convert ac power from a three-phase grid to a regulated dc voltage with unity input power factor. The output voltage regulation is normally achieved by an outer voltage feedback loop and a sinusoidal pulse-width-modulated (SPWM) inner current loop. However, the non-ideal power grid may drive the VSC to enter line-frequency instability region. In this paper, a line-frequency instability phenomenon in three-phase voltage-source converters is reported. The converter can also be regarded as exhibiting a Hopf-type bifurcation in which the dc output voltage oscillates at about 130 Hz, and large amount of harmonics appear on the line current. We develop an averaged model of the VSC and non-ideal power grid which can predict the Hopf-type bifurcation. The effects of circuit and grid parameters can be studied with this model, and are verified though cycle-by-cycle simulations. The simulations also provide design-oriented boundaries of operation.",

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Huang, M, Tse, CK & Wong, SC 2012, Line-frequency instability of three-phase PFC power supplies connecting to non-ideal power grid. in ISCAS 2012 - 2012 IEEE International Symposium on Circuits and Systems., 6271707, pp. 213-216, 2012 IEEE International Symposium on Circuits and Systems, ISCAS 2012, Seoul, Korea, Republic of, 20/05/12. https://doi.org/10.1109/ISCAS.2012.6271707

Line-frequency instability of three-phase PFC power supplies connecting to non-ideal power grid. / Huang, Meng; Tse, Chi Kong; Wong, Siu Chung.
ISCAS 2012 - 2012 IEEE International Symposium on Circuits and Systems. 2012. p. 213-216 6271707.

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

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AU - Wong, Siu Chung

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AB - Three-phase voltage source converters (VSC) are commonly used to convert ac power from a three-phase grid to a regulated dc voltage with unity input power factor. The output voltage regulation is normally achieved by an outer voltage feedback loop and a sinusoidal pulse-width-modulated (SPWM) inner current loop. However, the non-ideal power grid may drive the VSC to enter line-frequency instability region. In this paper, a line-frequency instability phenomenon in three-phase voltage-source converters is reported. The converter can also be regarded as exhibiting a Hopf-type bifurcation in which the dc output voltage oscillates at about 130 Hz, and large amount of harmonics appear on the line current. We develop an averaged model of the VSC and non-ideal power grid which can predict the Hopf-type bifurcation. The effects of circuit and grid parameters can be studied with this model, and are verified though cycle-by-cycle simulations. The simulations also provide design-oriented boundaries of operation.

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Line-frequency instability of three-phase PFC power supplies connecting to non-ideal power grid

Abstract

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ASJC Scopus subject areas

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