Performance enhancement of photovoltaic array through string and central based MPPT system under non-uniform irradiance conditions

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dc.contributor.authorSyafaruddin
dc.contributor.authorKaratepe, Engin
dc.contributor.authorHiyama, Takashi
dc.date.accessioned2019-10-27T21:41:12Z
dc.date.available2019-10-27T21:41:12Z
dc.date.issued2012
dc.departmentEge Üniversitesien_US
dc.description.abstractMismatching losses reduction of photovoltaic (PV) array has been intensively discussed through the increasing penetration of residential and commercial PV systems. Many causes of mismatching losses have been identified and plenty of proposed methods to solve this problem have been recently proposed. This paper deals with reducing method of mismatching losses due to the non-uniform irradiance conditions. It is well-known that a certain number of multiple peaks occur on the power-voltage curve as the number of PV modules in one-string increases under non-uniform operating conditions. Since the conventional control method only drives the operating points of PV system to the local maxima close to open circuit voltage, only small portion of power can be extracted from the PV system. In this study, a radial basis function neural network (RBF-ANN) based intelligent control method is utilized to map the global operating voltage and non-irradiance operating condition in string and central based MPPT systems. The proposed method has been tested on 10 x 3 (2.2 kW), 15 x 3 (2.5 kW) and 20 x 3 (3.3 kW) of series-parallel PV array configuration under random-shaded and continuous-shaded patterns. The proposed method is compared with the ideal case and conventional method through a simple power-voltage curve of PV arrays. The simulation results show that there are significant increases of about 30-60% of the extracted power in one operating condition when the proposed method is able to shift the operating voltage of modules to their optimum voltages. (C) 2012 Elsevier Ltd. All rights reserved.en_US
dc.identifier.doi10.1016/j.enconman.2012.03.028
dc.identifier.endpage140en_US
dc.identifier.issn0196-8904
dc.identifier.issn1879-2227
dc.identifier.issn0196-8904en_US
dc.identifier.issn1879-2227en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage131en_US
dc.identifier.urihttps://doi.org/10.1016/j.enconman.2012.03.028
dc.identifier.urihttps://hdl.handle.net/11454/46575
dc.identifier.volume62en_US
dc.identifier.wosWOS:000307037900016en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherPergamon-Elsevier Science Ltden_US
dc.relation.ispartofEnergy Conversion and Managementen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectPhotovoltaic systemen_US
dc.subjectString MPPT systemen_US
dc.subjectCentral MPPT systemen_US
dc.subjectRBF-ANNen_US
dc.subjectNon-uniform irradianceen_US
dc.titlePerformance enhancement of photovoltaic array through string and central based MPPT system under non-uniform irradiance conditionsen_US
dc.typeArticleen_US

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