An enhanced control system for single-phase inverters interfaced with weak and distorted grids

Silwal, S; Taghizadeh, S; Karimi-Ghartemani, M; Hossain, MJ; Davari, M

An enhanced control system for single-phase inverters interfaced with weak and distorted grids

Silwal, S Taghizadeh, S Karimi-Ghartemani, M Hossain, MJ Davari, M

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Publication Type:: Journal Article
Citation:: IEEE Transactions on Power Electronics, 2019, 34 (12), pp. 12538 - 12551
Issue Date:: 2019-12-01

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Field	Value	Language
dc.contributor.author	Silwal, S	en_US
dc.contributor.author	Taghizadeh, S	en_US
dc.contributor.author	Karimi-Ghartemani, M	en_US
dc.contributor.author	Hossain, MJ	en_US
dc.contributor.author	Davari, M	en_US
dc.date.issued	2019-12-01	en_US
dc.identifier.citation	IEEE Transactions on Power Electronics, 2019, 34 (12), pp. 12538 - 12551	en_US
dc.identifier.issn	0885-8993	en_US
dc.identifier.uri	http://hdl.handle.net/10453/138379
dc.description.abstract	© 2019 IEEE. This paper presents an enhanced current controller for improving the performance of a class of single-phase grid-connected inverters operating in weak and distorted grid conditions. An inverter designed to operate at normal (strong or stiff and clean) grid conditions may not perform satisfactorily during weak and distorted grid conditions. One major reason is the interfering dynamics of the synchronization or phase-locked loop (PLL). This paper proposes an enhanced control structure for a popular class of single-phase inverters to address this problem. The proposed idea is to include the PLL state variables into the main inverter controller thereby minimizing the undesirable interactions of the PLL with the other components. A method for optimally designing the controller gains is also proposed. Compared to the conventional one, the proposed controller is shown to have a more robust performance over a substantially wider range of weak and distorted grid conditions. Extensive simulation and experimental results are presented to validate the proposed controls.	en_US
dc.relation.ispartof	IEEE Transactions on Power Electronics	en_US
dc.relation.isbasedon	10.1109/TPEL.2019.2909532	en_US
dc.rights	info:eu-repo/semantics/embargoedAccess
dc.subject.classification	Electrical & Electronic Engineering	en_US
dc.title	An enhanced control system for single-phase inverters interfaced with weak and distorted grids	en_US
dc.type	Journal Article
utslib.citation.volume	12	en_US
utslib.citation.volume	34	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	*
utslib.copyright.embargo	2021-12-01T00:00:00+1100
pubs.issue	12	en_US
pubs.publication-status	Published	en_US
pubs.volume	34	en_US

Abstract:

© 2019 IEEE. This paper presents an enhanced current controller for improving the performance of a class of single-phase grid-connected inverters operating in weak and distorted grid conditions. An inverter designed to operate at normal (strong or stiff and clean) grid conditions may not perform satisfactorily during weak and distorted grid conditions. One major reason is the interfering dynamics of the synchronization or phase-locked loop (PLL). This paper proposes an enhanced control structure for a popular class of single-phase inverters to address this problem. The proposed idea is to include the PLL state variables into the main inverter controller thereby minimizing the undesirable interactions of the PLL with the other components. A method for optimally designing the controller gains is also proposed. Compared to the conventional one, the proposed controller is shown to have a more robust performance over a substantially wider range of weak and distorted grid conditions. Extensive simulation and experimental results are presented to validate the proposed controls.

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http://hdl.handle.net/10453/138379