Optimal Dynamic and Steady-State Performance of PV-Interfaced Converters Using Adaptive Observers

Lu, Y; Xiao, W; Lu, DDC

Optimal Dynamic and Steady-State Performance of PV-Interfaced Converters Using Adaptive Observers

Lu, Y Xiao, W Lu, DDC

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Publisher:: Institute of Electrical and Electronics Engineers (IEEE)
Publication Type:: Journal Article
Citation:: IEEE Transactions on Circuits and Systems II: Express Briefs, 2022, 69, (12), pp. 4909-4913
Issue Date:: 2022-12-01

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Field	Value	Language
dc.contributor.author	Lu, Y
dc.contributor.author	Xiao, W
dc.contributor.author	Lu, DDC
dc.date.accessioned	2023-04-11T03:56:12Z
dc.date.available	2023-04-11T03:56:12Z
dc.date.issued	2022-12-01
dc.identifier.citation	IEEE Transactions on Circuits and Systems II: Express Briefs, 2022, 69, (12), pp. 4909-4913
dc.identifier.issn	1549-7747
dc.identifier.issn	1558-3791
dc.identifier.uri	http://hdl.handle.net/10453/169563
dc.description.abstract	The voltage regulation of a grid-tied PV system is constantly perturbed for the maximum power point tracking (MPPT), the transients of which determine the dynamic MPPT efficiency. Meanwhile, the PV-link voltage ripple coupled from the DC to single-phase AC power conversion adversely affects the static MPPT efficiency. Thus, optimal dynamic and steady-state performance is necessary to maximize the solar energy harvest. This brief proposes a novel adaptive mechanism preserving the advantages of two observers: the classical extended state observer and reduced-order generalized proportional integral observer. Simulation and experimental results prove the enhanced performance regarding the overshoot-free fast transient response and steady state against disturbances, even with small input capacitance. Meanwhile, the observer switching happens seamlessly through the proposed mechanism, which is confirmed analytically and experimentally.
dc.language	en
dc.publisher	Institute of Electrical and Electronics Engineers (IEEE)
dc.relation.ispartof	IEEE Transactions on Circuits and Systems II: Express Briefs
dc.relation.isbasedon	10.1109/TCSII.2022.3195992
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	0906 Electrical and Electronic Engineering
dc.subject.classification	Electrical & Electronic Engineering
dc.title	Optimal Dynamic and Steady-State Performance of PV-Interfaced Converters Using Adaptive Observers
dc.type	Journal Article
utslib.citation.volume	69
utslib.for	0906 Electrical and Electronic 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	closed_access	*
dc.date.updated	2023-04-11T03:56:11Z
pubs.issue	12
pubs.publication-status	Published
pubs.volume	69
utslib.citation.issue	12

Abstract:

The voltage regulation of a grid-tied PV system is constantly perturbed for the maximum power point tracking (MPPT), the transients of which determine the dynamic MPPT efficiency. Meanwhile, the PV-link voltage ripple coupled from the DC to single-phase AC power conversion adversely affects the static MPPT efficiency. Thus, optimal dynamic and steady-state performance is necessary to maximize the solar energy harvest. This brief proposes a novel adaptive mechanism preserving the advantages of two observers: the classical extended state observer and reduced-order generalized proportional integral observer. Simulation and experimental results prove the enhanced performance regarding the overshoot-free fast transient response and steady state against disturbances, even with small input capacitance. Meanwhile, the observer switching happens seamlessly through the proposed mechanism, which is confirmed analytically and experimentally.

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http://hdl.handle.net/10453/169563