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Article: Efficient Improvement of Photovoltaic-Battery Systems in Standalone DC Microgrids Using A Local Hierarchical Control for the Battery System

TitleEfficient Improvement of Photovoltaic-Battery Systems in Standalone DC Microgrids Using A Local Hierarchical Control for the Battery System
Authors
Yang, YQin, YTan, SCHui, SYR
KeywordsLocal hierarchical control (LHC)
photovoltaic (PV) battery system
standalone dc microgrid
Issue Date2019
PublisherInstitute of Electrical and Electronics Engineers. The Journal's web site is located at http://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=63
Citation
IEEE Transactions on Power Electronics, 2019, v. 34 n. 11, p. 10796-10807 How to Cite?
DOI: http://dx.doi.org/10.1109/TPEL.2019.2900147
AbstractThe conventional control methods for the battery systems of photovoltaic (PV) battery systems in standalone dc microgrids are designed to stringently regulate the bus voltages at the maximum power points (MPP) of PV modules while the state of charge (SOC) of the battery packs is regulated within the tolerances. In this paper, a local hierarchical control (LHC) is proposed for the battery system to improve the energy efficiency of the entire PV-battery system at the MPP of PV modules while the SOC of the battery pack is still regulated within the tolerance. Specifically, by allowing the dc bus voltage to deviate within a preset allowable tolerance, the secondary control of the LHC is employed to compute real-time optimal references to its primary control, such that the energy conversion of the entire PV-battery system can be optimized. Simulation studies exhibit significant efficiency improvement of a 12-PV-battery system under both uniform and nonuniform insolation conditions on a cloudy day and a 600-kW PV-battery system on a sunny day using the proposed LHC. Experimental results validate that the energy efficiency of a single-PV-module-battery system controlled by the LHC can be enhanced using shortened sunny-day and cloudy-day irradiance profiles for various PV modules. The proposed control scheme can be easily implemented in digital controllers without additional hardware costs. © 1986-2012 IEEE.
Persistent Identifierhttp://hdl.handle.net/10722/277217
ISSN
0885-8993
2021 Impact Factor: 5.967
2020 SCImago Journal Rankings: 2.159
ISI Accession Number ID
WOS:000485746400039

 

DC FieldValueLanguage
dc.contributor.authorYang, Y-
dc.contributor.authorQin, Y-
dc.contributor.authorTan, SC-
dc.contributor.authorHui, SYR-
dc.date.accessioned2019-09-20T08:46:51Z-
dc.date.available2019-09-20T08:46:51Z-
dc.date.issued2019-
dc.identifier.citationIEEE Transactions on Power Electronics, 2019, v. 34 n. 11, p. 10796-10807-
dc.identifier.issn0885-8993-
dc.identifier.urihttp://hdl.handle.net/10722/277217-
dc.description.abstractThe conventional control methods for the battery systems of photovoltaic (PV) battery systems in standalone dc microgrids are designed to stringently regulate the bus voltages at the maximum power points (MPP) of PV modules while the state of charge (SOC) of the battery packs is regulated within the tolerances. In this paper, a local hierarchical control (LHC) is proposed for the battery system to improve the energy efficiency of the entire PV-battery system at the MPP of PV modules while the SOC of the battery pack is still regulated within the tolerance. Specifically, by allowing the dc bus voltage to deviate within a preset allowable tolerance, the secondary control of the LHC is employed to compute real-time optimal references to its primary control, such that the energy conversion of the entire PV-battery system can be optimized. Simulation studies exhibit significant efficiency improvement of a 12-PV-battery system under both uniform and nonuniform insolation conditions on a cloudy day and a 600-kW PV-battery system on a sunny day using the proposed LHC. Experimental results validate that the energy efficiency of a single-PV-module-battery system controlled by the LHC can be enhanced using shortened sunny-day and cloudy-day irradiance profiles for various PV modules. The proposed control scheme can be easily implemented in digital controllers without additional hardware costs. © 1986-2012 IEEE.-
dc.languageeng-
dc.publisherInstitute of Electrical and Electronics Engineers. The Journal's web site is located at http://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=63-
dc.relation.ispartofIEEE Transactions on Power Electronics-
dc.rightsIEEE Transactions on Power Electronics. Copyright © Institute of Electrical and Electronics Engineers.-
dc.rights©2019 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.-
dc.subjectLocal hierarchical control (LHC)-
dc.subjectphotovoltaic (PV) battery system-
dc.subjectstandalone dc microgrid-
dc.titleEfficient Improvement of Photovoltaic-Battery Systems in Standalone DC Microgrids Using A Local Hierarchical Control for the Battery System-
dc.typeArticle-
dc.identifier.emailYang, Y: cacaloto@hku.hk-
dc.identifier.emailTan, SC: sctan@eee.hku.hk-
dc.identifier.emailHui, SYR: ronhui@eee.hku.hk-
dc.identifier.authorityTan, SC=rp01606-
dc.identifier.authorityHui, SYR=rp01510-
dc.description.naturepostprint-
dc.identifier.doi10.1109/TPEL.2019.2900147-
dc.identifier.scopuseid_2-s2.0-85072060841-
dc.identifier.hkuros305278-
dc.identifier.volume34-
dc.identifier.issue11-
dc.identifier.spage10796-
dc.identifier.epage10807-
dc.identifier.isiWOS:000485746400039-
dc.publisher.placeUnited States-
dc.identifier.issnl0885-8993-

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