Decentralised control method for DC microgrids with improved current sharing accuracy

Yang, J; Jin, X; Wu, X; Acuna, P; Aguilera, RP; Morstyn, T; Agelidis, VG

Decentralised control method for DC microgrids with improved current sharing accuracy

Yang, J Jin, X Wu, X Acuna, P Aguilera, RP

Morstyn, T Agelidis, VG

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Publication Type:: Journal Article
Citation:: IET Generation, Transmission and Distribution, 2017, 11 (3), pp. 696 - 706
Issue Date:: 2017-02-16

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Field	Value	Language
dc.contributor.author	Yang, J	en_US
dc.contributor.author	Jin, X	en_US
dc.contributor.author	Wu, X	en_US
dc.contributor.author	Acuna, P	en_US
dc.contributor.author	Aguilera, RP https://orcid.org/0000-0003-4166-8341	en_US
dc.contributor.author	Morstyn, T	en_US
dc.contributor.author	Agelidis, VG	en_US
dc.date.issued	2017-02-16	en_US
dc.identifier.citation	IET Generation, Transmission and Distribution, 2017, 11 (3), pp. 696 - 706	en_US
dc.identifier.issn	1751-8687	en_US
dc.identifier.uri	http://hdl.handle.net/10453/99137
dc.description.abstract	© The Institution of Engineering and Technology 2016. A decentralised control method that deals with current sharing issues in dc microgrids (MGs) is proposed in thisstudy. The proposed method is formulated in terms of 'modified global indicator' concept, which was originally proposedto improve reactive power sharing in ac MGs. In this work, the 'modified global indicator' concept is extended tocoordinate dc MGs, which aims to preserve the main features offered by decentralised control methods such as no need ofcommunication links, central controller or knowledge of the microgrid topology and parameters. This global indicator isinserted between current and voltage variables by adopting a virtual capacitor, which directly produces an output currentsharing performance that is less relied on mismatches of the multi-bus network. Meanwhile, a voltage stabiliser iscomplementary developed to maintain output voltage magnitude at steady state through a shunt virtual resistance. Theoperation under multiple dc-buses is also included in order to enhance the applicability of the proposed controller. Adetailed mathematical model including the effect of network mismatches is derived for analysis of the stability of theproposed controller. The feasibility and effectiveness of the proposed control strategy are validated by simulation andexperimental results.	en_US
dc.relation.ispartof	IET Generation, Transmission and Distribution	en_US
dc.relation.isbasedon	10.1049/iet-gtd.2016.0295	en_US
dc.subject.classification	Energy	en_US
dc.title	Decentralised control method for DC microgrids with improved current sharing accuracy	en_US
dc.type	Journal Article
utslib.citation.volume	3	en_US
utslib.citation.volume	11	en_US
utslib.for	0906 Electrical and Electronic Engineering	en_US
pubs.embargo.period	Not known	en_US
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	open_access
pubs.issue	3	en_US
pubs.publication-status	Published	en_US
pubs.volume	11	en_US

Abstract:

© The Institution of Engineering and Technology 2016. A decentralised control method that deals with current sharing issues in dc microgrids (MGs) is proposed in thisstudy. The proposed method is formulated in terms of 'modified global indicator' concept, which was originally proposedto improve reactive power sharing in ac MGs. In this work, the 'modified global indicator' concept is extended tocoordinate dc MGs, which aims to preserve the main features offered by decentralised control methods such as no need ofcommunication links, central controller or knowledge of the microgrid topology and parameters. This global indicator isinserted between current and voltage variables by adopting a virtual capacitor, which directly produces an output currentsharing performance that is less relied on mismatches of the multi-bus network. Meanwhile, a voltage stabiliser iscomplementary developed to maintain output voltage magnitude at steady state through a shunt virtual resistance. Theoperation under multiple dc-buses is also included in order to enhance the applicability of the proposed controller. Adetailed mathematical model including the effect of network mismatches is derived for analysis of the stability of theproposed controller. The feasibility and effectiveness of the proposed control strategy are validated by simulation andexperimental results.

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http://hdl.handle.net/10453/99137