Sequence-Based Control Strategy with Current Limiting for the Fault Ride-Through of Inverter-Interfaced Distributed Generators

Mahamedi, B; Eskandari, M; Fletcher, JE; Zhu, J

Sequence-Based Control Strategy with Current Limiting for the Fault Ride-Through of Inverter-Interfaced Distributed Generators

Mahamedi, B

Eskandari, M

Fletcher, JE Zhu, J

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Publication Type:: Journal Article
Citation:: IEEE Transactions on Sustainable Energy, 2020, 11 (1), pp. 165 - 174
Issue Date:: 2020-01-01

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Field	Value	Language
dc.contributor.author	Mahamedi, B https://orcid.org/0000-0001-7086-5948	en_US
dc.contributor.author	Eskandari, M https://orcid.org/0000-0003-1185-9585	en_US
dc.contributor.author	Fletcher, JE	en_US
dc.contributor.author	Zhu, J https://orcid.org/0000-0002-9763-4047	en_US
dc.date.accessioned	2020-04-17T01:40:15Z
dc.date.available	2020-04-17T01:40:15Z
dc.date.issued	2020-01-01	en_US
dc.identifier.citation	IEEE Transactions on Sustainable Energy, 2020, 11 (1), pp. 165 - 174	en_US
dc.identifier.issn	1949-3029	en_US
dc.identifier.uri	http://hdl.handle.net/10453/140063
dc.description.abstract	© 2010-2012 IEEE. Three-phase three-leg inverters represent the majority of inverters that are integrated into low voltage power grids. They can develop positive- and negative-sequence components during unbalanced conditions including asymmetrical faults, but not zero-sequence components. This indicates that a sequence-based control strategy is required for comprehensive control of inverter currents and voltages. Positive- and negative-sequence components must be controlled separately with their own dedicated controllers in such a scheme. Given this critical need, a sequence-based control technique for grid-forming and grid-feeding inverter-interfaced distributed generators is proposed. As a necessary part of the fault ride-through capability of inverter-interfaced distributed generators, a current limiter is developed, which can limit inverter currents at a pre-defined threshold for both balanced and unbalanced faults. Whilst the current regulators work in the synchronous reference frame with simple PI controllers, the limiter works in the natural reference frame and thus treats each phase current separately, which results in current limiting at the threshold for all phases. The advantage of the proposed limiter is that it acts instantaneously such that the inverter current can be limited from the start of the disturbance. The simulation results in MATLAB/SIMULINK reveal promising performance of the proposed control strategy with the proposed current limiting.	en_US
dc.relation.ispartof	IEEE Transactions on Sustainable Energy	en_US
dc.relation.isbasedon	10.1109/TSTE.2018.2887149	en_US
dc.rights	info:eu-repo/semantics/closedAccess
dc.title	Sequence-Based Control Strategy with Current Limiting for the Fault Ride-Through of Inverter-Interfaced Distributed Generators	en_US
dc.type	Journal Article
utslib.citation.volume	1	en_US
utslib.citation.volume	11	en_US
utslib.for	0906 Electrical and Electronic Engineering	en_US
utslib.for	0915 Interdisciplinary 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
pubs.organisational-group	/University of Technology Sydney/Strength - CCET - Centre for Clean Energy Technology
pubs.organisational-group	/University of Technology Sydney/Students
utslib.copyright.status	closed_access	*
pubs.issue	1	en_US
pubs.publication-status	Published	en_US
pubs.volume	11	en_US

Abstract:

© 2010-2012 IEEE. Three-phase three-leg inverters represent the majority of inverters that are integrated into low voltage power grids. They can develop positive- and negative-sequence components during unbalanced conditions including asymmetrical faults, but not zero-sequence components. This indicates that a sequence-based control strategy is required for comprehensive control of inverter currents and voltages. Positive- and negative-sequence components must be controlled separately with their own dedicated controllers in such a scheme. Given this critical need, a sequence-based control technique for grid-forming and grid-feeding inverter-interfaced distributed generators is proposed. As a necessary part of the fault ride-through capability of inverter-interfaced distributed generators, a current limiter is developed, which can limit inverter currents at a pre-defined threshold for both balanced and unbalanced faults. Whilst the current regulators work in the synchronous reference frame with simple PI controllers, the limiter works in the natural reference frame and thus treats each phase current separately, which results in current limiting at the threshold for all phases. The advantage of the proposed limiter is that it acts instantaneously such that the inverter current can be limited from the start of the disturbance. The simulation results in MATLAB/SIMULINK reveal promising performance of the proposed control strategy with the proposed current limiting.

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http://hdl.handle.net/10453/140063