Identification of gain and phase margins based robust stability regions for a time-delayed micro-grid system including fractional-order controller in presence of renewable power generation

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dc.authoridGUNDUZ, Hakan/0000-0002-6781-3749
dc.contributor.authorGunduz, Hakan
dc.contributor.authorSonmez, Sahin
dc.contributor.authorAyasun, Saffet
dc.date.accessioned2025-03-23T19:25:35Z
dc.date.available2025-03-23T19:25:35Z
dc.date.issued2022
dc.departmentSinop Üniversitesi
dc.description.abstractThis study examines the gain and phase margins (GPMs) based robust stability margins in the parameter space of fractional order proportional-integral (FOPI) controller for a micro-grid (MG) system with communication time delays. Fluctuations in renewable energy sources (RESs), uncertainties in parameters of system components and communication delays could adversely affect the dynamical analysis and frequency stability of the MG system. Such a MG system has an interval characteristic due to the parametric variations and the interval transfer functions defined by Kharitonov's theorem, which presents a solution for checking of robust stability. Therefore, this study addresses the robust stability regions containing a set of robust FOPI controller gains for all possible transfer functions of the MG system by a simple graphical method working in controller parameter space. In this way, the impact of fractional order degree of integral controller on the robust stability regions is exhaustively examined by the graphical method. Additionally, robust performance of the interval MG system in terms of design specifications including GPMs is analyzed, and the effect of GPMs on the robust regions is investigated by the graphical method. Results indicate that GPM parameters provide the desirable performances for the MG and fractional order of integral controller considerably increases the robustness of the stability margin of the MG when compared with the integer order PI controller.
dc.identifier.doi10.55730/1300-0632.3829
dc.identifier.endpage+
dc.identifier.issn1300-0632
dc.identifier.issn1303-6203
dc.identifier.issue3
dc.identifier.scopus2-s2.0-85128274897
dc.identifier.scopusqualityQ2
dc.identifier.startpage1097
dc.identifier.trdizinid529562
dc.identifier.urihttps://doi.org/10.55730/1300-0632.3829
dc.identifier.urihttps://search.trdizin.gov.tr/tr/yayin/detay/529562
dc.identifier.urihttps://hdl.handle.net/11486/4507
dc.identifier.volume30
dc.identifier.wosWOS:000774599800037
dc.identifier.wosqualityQ4
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.indekslendigikaynakTR-Dizin
dc.language.isoen
dc.publisherTubitak Scientific & Technological Research Council Turkey
dc.relation.ispartofTurkish Journal of Electrical Engineering and Computer Sciences
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.snmzKA_WOS_20250323
dc.subjectMicro-grids
dc.subjectgain and phase margins
dc.subjectrobust stability region
dc.subjectfractional-order controller
dc.titleIdentification of gain and phase margins based robust stability regions for a time-delayed micro-grid system including fractional-order controller in presence of renewable power generation
dc.typeArticle

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