Communication-Less Active Damping Method With VSC for Stability Improvement of Grid-Connected DC Microgrid With Selected Frequency Islanding Detection

Shi, T; Xiang, X; Lei, J; Liu, B; Wang, F; Yang, H; Li, L; Li, W

Communication-Less Active Damping Method With VSC for Stability Improvement of Grid-Connected DC Microgrid With Selected Frequency Islanding Detection

Shi, T Xiang, X Lei, J Liu, B Wang, F Yang, H Li, L

Li, W

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Publisher:: IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Publication Type:: Journal Article
Citation:: IEEE Transactions on Industrial Electronics, 2024, 71, (10), pp. 12290-12300
Issue Date:: 2024-01-01

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Field	Value	Language
dc.contributor.author	Shi, T
dc.contributor.author	Xiang, X
dc.contributor.author	Lei, J
dc.contributor.author	Liu, B
dc.contributor.author	Wang, F
dc.contributor.author	Yang, H
dc.contributor.author	Li, L https://orcid.org/0000-0001-8485-2216
dc.contributor.author	Li, W
dc.date.accessioned	2024-08-07T04:42:14Z
dc.date.available	2024-08-07T04:42:14Z
dc.date.issued	2024-01-01
dc.identifier.citation	IEEE Transactions on Industrial Electronics, 2024, 71, (10), pp. 12290-12300
dc.identifier.issn	0278-0046
dc.identifier.issn	1557-9948
dc.identifier.uri	http://hdl.handle.net/10453/180220
dc.description.abstract	The islanding detection method (IDM) with current disturbance of selected frequency (CDSF) in dc microgrids is gaining extensive attention thanks to its small nondetection zone and good power quality. However, the CDSF is implemented through a positive feedback loop and thus will lead to instability issues for the dc microgrid even in the grid-connected mode. Conventional stabilization control is generally employed on the distributed generator (DG) side and usually requires an additional uninterrupted communication process, which therefore decreases system reliability. In this article, the impedance model of the dc microgrid is established first to reveal the interaction instability mechanism between the voltage source converter (VSC) and DG equipped with CDSF IDM. On top of that, the notch-filter-based active damping method is proposed on the VSC side to avoid amplitude intersection of impedance near the selected resonant frequency, which effectively mitigates the instability caused by the islanding detection loop without relying on communication. Moreover, the parameter design method is further summarized to provide guidance for the selection of notch bandwidth in the proposed damper. In this manner, the stability of the grid-connected system can be improved while the islanding detecting speed is enhanced. In the end, the effectiveness of the proposed stabilizing method is verified by the experiments.
dc.language	English
dc.publisher	IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
dc.relation.ispartof	IEEE Transactions on Industrial Electronics
dc.relation.isbasedon	10.1109/TIE.2023.3347829
dc.rights	info:eu-repo/semantics/embargoedAccess
dc.subject	08 Information and Computing Sciences, 09 Engineering
dc.subject.classification	Electrical & Electronic Engineering
dc.subject.classification	40 Engineering
dc.subject.classification	46 Information and computing sciences
dc.title	Communication-Less Active Damping Method With VSC for Stability Improvement of Grid-Connected DC Microgrid With Selected Frequency Islanding Detection
dc.type	Journal Article
utslib.citation.volume	71
utslib.for	08 Information and Computing Sciences
utslib.for	09 Engineering
pubs.organisational-group	University of Technology Sydney
pubs.organisational-group	University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	University of Technology Sydney/Faculty of Engineering and Information Technology/School of Electrical and Data Engineering
utslib.copyright.status	embargoed	*
utslib.copyright.embargo	2026-01-15T00:00:00+1000Z
dc.date.updated	2024-08-07T04:42:05Z
pubs.issue	10
pubs.publication-status	Published
pubs.volume	71
utslib.citation.issue	10

Abstract:

The islanding detection method (IDM) with current disturbance of selected frequency (CDSF) in dc microgrids is gaining extensive attention thanks to its small nondetection zone and good power quality. However, the CDSF is implemented through a positive feedback loop and thus will lead to instability issues for the dc microgrid even in the grid-connected mode. Conventional stabilization control is generally employed on the distributed generator (DG) side and usually requires an additional uninterrupted communication process, which therefore decreases system reliability. In this article, the impedance model of the dc microgrid is established first to reveal the interaction instability mechanism between the voltage source converter (VSC) and DG equipped with CDSF IDM. On top of that, the notch-filter-based active damping method is proposed on the VSC side to avoid amplitude intersection of impedance near the selected resonant frequency, which effectively mitigates the instability caused by the islanding detection loop without relying on communication. Moreover, the parameter design method is further summarized to provide guidance for the selection of notch bandwidth in the proposed damper. In this manner, the stability of the grid-connected system can be improved while the islanding detecting speed is enhanced. In the end, the effectiveness of the proposed stabilizing method is verified by the experiments.

Please use this identifier to cite or link to this item:

http://hdl.handle.net/10453/180220