Stability analysis and improvement of three-phase grid-connected power converters with virtual inertia control

Jingyang Fang; Pengfeng Lin; Hongchang Li; Yi Tang; Yongheng Yang

doi:10.1109/APEC.2019.8721845

Stability analysis and improvement of three-phase grid-connected power converters with virtual inertia control

Jingyang Fang
, Pengfeng Lin
, Hongchang Li
, Yi Tang
, Yongheng Yang

Nanyang Technological University

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

2 Scopus citations

Abstract

The lack of inertia issue challenges the frequency control and stability of small-scale modern power systems. To alleviate adverse effects from inertia reduction, three-phase grid-connected power converters are increasingly being used to provide virtual inertia upon system demands. This can be achieved by directly linking the grid frequency and voltage references of DC-link capacitors/ultracapacitors. However, this paper reveals that the virtual inertia control may possibly induce instabilities to power converters under weak grid conditions, which is caused by the coupling between the d- and q-axis as well as the inherent differential operator introduced by the virtual inertia control. To tackle the instability issue, this paper proposes a modified virtual inertia control to mitigate the differential effect. Experimental verifications are provided, which demonstrate the effectiveness of the proposed control in stabilizing three-phase grid-connected power converters for inertia emulation even when connected to weak grids.

Original language	English
Title of host publication	34th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2019
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	2400-2405
Number of pages	6
ISBN (Electronic)	9781538683309
DOIs	https://doi.org/10.1109/APEC.2019.8721845
State	Published - 24 May 2019
Externally published	Yes
Event	34th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2019 - Anaheim, United States Duration: 17 Mar 2019 → 21 Mar 2019

Publication series

Name	Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC
Volume	2019-March

Conference

Conference	34th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2019
Country/Territory	United States
City	Anaheim
Period	17/03/19 → 21/03/19

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Keywords

Frequency regulation
Power converter
Renewable energy
Stability
Virtual inertia
Weak grid

Access to Document

10.1109/APEC.2019.8721845

Cite this

Fang, J., Lin, P., Li, H., Tang, Y., & Yang, Y. (2019). Stability analysis and improvement of three-phase grid-connected power converters with virtual inertia control. In 34th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2019 (pp. 2400-2405). Article 8721845 (Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC; Vol. 2019-March). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/APEC.2019.8721845

Fang, Jingyang ; Lin, Pengfeng ; Li, Hongchang et al. / Stability analysis and improvement of three-phase grid-connected power converters with virtual inertia control. 34th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2019. Institute of Electrical and Electronics Engineers Inc., 2019. pp. 2400-2405 (Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC).

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title = "Stability analysis and improvement of three-phase grid-connected power converters with virtual inertia control",

abstract = "The lack of inertia issue challenges the frequency control and stability of small-scale modern power systems. To alleviate adverse effects from inertia reduction, three-phase grid-connected power converters are increasingly being used to provide virtual inertia upon system demands. This can be achieved by directly linking the grid frequency and voltage references of DC-link capacitors/ultracapacitors. However, this paper reveals that the virtual inertia control may possibly induce instabilities to power converters under weak grid conditions, which is caused by the coupling between the d- and q-axis as well as the inherent differential operator introduced by the virtual inertia control. To tackle the instability issue, this paper proposes a modified virtual inertia control to mitigate the differential effect. Experimental verifications are provided, which demonstrate the effectiveness of the proposed control in stabilizing three-phase grid-connected power converters for inertia emulation even when connected to weak grids.",

keywords = "Frequency regulation, Power converter, Renewable energy, Stability, Virtual inertia, Weak grid",

author = "Jingyang Fang and Pengfeng Lin and Hongchang Li and Yi Tang and Yongheng Yang",

note = "Publisher Copyright: {\textcopyright} 2019 IEEE.; 34th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2019 ; Conference date: 17-03-2019 Through 21-03-2019",

year = "2019",

month = may,

day = "24",

doi = "10.1109/APEC.2019.8721845",

language = "英语",

series = "Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC",

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Fang, J, Lin, P, Li, H, Tang, Y & Yang, Y 2019, Stability analysis and improvement of three-phase grid-connected power converters with virtual inertia control. in 34th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2019., 8721845, Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC, vol. 2019-March, Institute of Electrical and Electronics Engineers Inc., pp. 2400-2405, 34th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2019, Anaheim, United States, 17/03/19. https://doi.org/10.1109/APEC.2019.8721845

Stability analysis and improvement of three-phase grid-connected power converters with virtual inertia control. / Fang, Jingyang; Lin, Pengfeng; Li, Hongchang et al.
34th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2019. Institute of Electrical and Electronics Engineers Inc., 2019. p. 2400-2405 8721845 (Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC; Vol. 2019-March).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - Stability analysis and improvement of three-phase grid-connected power converters with virtual inertia control

AU - Fang, Jingyang

AU - Lin, Pengfeng

AU - Li, Hongchang

AU - Tang, Yi

AU - Yang, Yongheng

PY - 2019/5/24

Y1 - 2019/5/24

N2 - The lack of inertia issue challenges the frequency control and stability of small-scale modern power systems. To alleviate adverse effects from inertia reduction, three-phase grid-connected power converters are increasingly being used to provide virtual inertia upon system demands. This can be achieved by directly linking the grid frequency and voltage references of DC-link capacitors/ultracapacitors. However, this paper reveals that the virtual inertia control may possibly induce instabilities to power converters under weak grid conditions, which is caused by the coupling between the d- and q-axis as well as the inherent differential operator introduced by the virtual inertia control. To tackle the instability issue, this paper proposes a modified virtual inertia control to mitigate the differential effect. Experimental verifications are provided, which demonstrate the effectiveness of the proposed control in stabilizing three-phase grid-connected power converters for inertia emulation even when connected to weak grids.

AB - The lack of inertia issue challenges the frequency control and stability of small-scale modern power systems. To alleviate adverse effects from inertia reduction, three-phase grid-connected power converters are increasingly being used to provide virtual inertia upon system demands. This can be achieved by directly linking the grid frequency and voltage references of DC-link capacitors/ultracapacitors. However, this paper reveals that the virtual inertia control may possibly induce instabilities to power converters under weak grid conditions, which is caused by the coupling between the d- and q-axis as well as the inherent differential operator introduced by the virtual inertia control. To tackle the instability issue, this paper proposes a modified virtual inertia control to mitigate the differential effect. Experimental verifications are provided, which demonstrate the effectiveness of the proposed control in stabilizing three-phase grid-connected power converters for inertia emulation even when connected to weak grids.

KW - Frequency regulation

KW - Power converter

KW - Renewable energy

KW - Stability

KW - Virtual inertia

KW - Weak grid

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PB - Institute of Electrical and Electronics Engineers Inc.

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Y2 - 17 March 2019 through 21 March 2019

ER -

Fang J, Lin P, Li H, Tang Y, Yang Y. Stability analysis and improvement of three-phase grid-connected power converters with virtual inertia control. In 34th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2019. Institute of Electrical and Electronics Engineers Inc. 2019. p. 2400-2405. 8721845. (Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC). doi: 10.1109/APEC.2019.8721845

Stability analysis and improvement of three-phase grid-connected power converters with virtual inertia control

Abstract

Publication series

Conference

UN SDGs

Keywords

Access to Document

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