A fast hybrid PLL with an adaptive all-pass filter under abnormal grid conditions

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dc.contributor.authorSevilmiş F.
dc.contributor.authorKaraca H.
dc.date.accessioned2020-03-26T20:20:39Z
dc.date.available2020-03-26T20:20:39Z
dc.date.issued2020
dc.departmentSelçuk Üniversitesien_US
dc.description.abstractRecently, various phase locked loop (PLL) methods have been improved for a reliable and robust synchronization under non-ideal grid conditions. One of the PLLs is a hybrid PLL (HPLL) which is an improved structure of the quasi-type-1 PLL (QT1-PLL) method. In this paper, an enhanced HPLL that offers both fast transient response and increased disturbance rejection capability for dominant harmonics is proposed. The proposed PLL includes adaptive all-pass-filters (APFs) in pre-filtering stage to eliminate fundamental frequency negative sequence (FFNS) component. Thus, window-width of the moving average filter (MAF) is reduced by three times compared with the HPLL by means of removing the FFNS component. So, the proposed PLL, which is called fast-hybrid PLL (FH-PLL), considerably ensures a fast transient response. Also, in case of grid faults (for example, type-B, type-C, type-D, and etc.), at the same time frequency change occurs, the FH-PLL completely blocks the FFNS component by means of using adaptive DAPF. In this study, it is experimentally implemented HPLL, QT1-PLL, and the proposed FH-PLL methods. The effectiveness of the FH-PLL is verified owing to experimental results and comparison with the QT1-PLL and HPLL. © 2020 Elsevier B.V.en_US
dc.description.sponsorship19401090en_US
dc.description.sponsorshipThe authors acknowledge the financial support by the Scientific Research Projects Coordinating Office of Selçuk University (SÜBAP Project No: 19401090 ).en_US
dc.identifier.doi10.1016/j.epsr.2020.106303en_US
dc.identifier.issn0378-7796en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.urihttps://dx.doi.org/10.1016/j.epsr.2020.106303
dc.identifier.urihttps://hdl.handle.net/20.500.12395/38638
dc.identifier.volume184en_US
dc.identifier.wosWOS:000525770200022en_US
dc.identifier.wosqualityQ2en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherElsevier Ltden_US
dc.relation.ispartofElectric Power Systems Researchen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.selcuk20240510_oaigen_US
dc.subjectAll-pass filteren_US
dc.subjectDistorted grid conditionsen_US
dc.subjectFH-PLLen_US
dc.subjectGrid tied inverteren_US
dc.subjectMoving average filter (MAF)en_US
dc.subjectPLLen_US
dc.titleA fast hybrid PLL with an adaptive all-pass filter under abnormal grid conditionsen_US
dc.typeArticleen_US

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