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dc.contributor.authorMicallef, Alexander-
dc.contributor.authorApap, Maurice-
dc.contributor.authorSpiteri Staines, Cyril-
dc.contributor.authorGuerrero, Josep M.-
dc.date.accessioned2018-02-28T16:53:57Z-
dc.date.available2018-02-28T16:53:57Z-
dc.date.issued2015-
dc.identifier.citationMicallef, A., Apap, M., Spiteri Staines, C., & Guerrero, J. M. (2017). Mitigation of harmonics in grid-connected and islanded microgrids via virtual admittances and impedances. IEEE Transactions on Smart Grid, 8(2), 651-661.en_GB
dc.identifier.urihttps://www.um.edu.mt/library/oar//handle/123456789/27438-
dc.description.abstractOptimization of the islanded and grid-connected operation of microgrids is important to achieve a high degree of reliability. In this paper, the authors consider the effect of current harmonics in single phase microgrids during both modes of operation. A detailed analysis of the effect of the output impedance of the considered primary control loops on the harmonic output of the considered voltage source inverters is initially carried out. A virtual admittance loop is proposed to attenuate the current harmonic output in grid-connected operation that is generated due to the grid voltage distortion present at the point of common coupling (PCC) and due to local non-linear loads. This paper also considers the harmonic current sharing and resulting voltage harmonics at the PCC during islanded operation of the microgrid. A capacitive virtual impedance loop was implemented to improve the harmonic current sharing and attenuate the voltage harmonics at the PCC. Experimental results are given to validate the operation of the proposed algorithms.en_GB
dc.language.isoenen_GB
dc.publisherInstitute of Electrical and Electronics Engineersen_GB
dc.rightsinfo:eu-repo/semantics/restrictedAccessen_GB
dc.subjectHarmonic analysisen_GB
dc.subjectImpedance (Electricity)en_GB
dc.subjectPhotovoltaic power systemsen_GB
dc.titleMitigation of harmonics in grid-connected and islanded microgrids via virtual admittances and impedancesen_GB
dc.typearticleen_GB
dc.rights.holderThe copyright of this work belongs to the author(s)/publisher. The rights of this work are as defined by the appropriate Copyright Legislation or as modified by any successive legislation. Users may access this work and can make use of the information contained in accordance with the Copyright Legislation provided that the author must be properly acknowledged. Further distribution or reproduction in any format is prohibited without the prior permission of the copyright holder.en_GB
dc.description.reviewedpeer-revieweden_GB
dc.identifier.doi10.1109/TSG.2015.2497409-
dc.publication.titleIEEE Transactions on Smart Griden_GB
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