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dc.contributor.authorIsobe, Takanori
dc.contributor.authorBarrera-Cardenas, Rene A.
dc.contributor.authorHe, Zijin
dc.contributor.authorZou, Yang
dc.contributor.authorTerazono, Katsushi
dc.contributor.authorTadano, Hiroshi
dc.date.accessioned2019-10-04T08:00:51Z
dc.date.available2019-10-04T08:00:51Z
dc.date.issued2019
dc.identifier.issn2168-6777
dc.identifier.urihttp://hdl.handle.net/11250/2620211
dc.description.abstractThis paper presents the control structure of a solidstate transformer for three-phase AC/AC, to reduce the required size of capacitors. The structure consists of an AC/DC converter based on cascaded H-bridge converters, isolated DC/DC converters, and a DC/AC inverter. The phase separated configuration requires a high capacitance for the smoothing capacitors owing to the instantaneous power oscillation at the double-line frequency. This paper reviews control methods of the DC/DC converter to achieve synchronous instantaneous power with the AC/DC converter, and thereby cancel the double-line frequency component applied to the capacitors between the AC/DC and DC/DC converters. This study also proposes incorporating a control method to cancel the oscillating instantaneous power caused by an unbalanced load current. The overall control was demonstrated using a 6-kVA laboratory prototype. The required minimum capacitance, which is decided by the switching frequency, is discussed, and the demonstration of a design case study on a 300-kVA system is described. The likely increase in loss in the isolated DC/DC converter owing to the power oscillation controls was evaluated with a 10-kW loss evaluation-model of a DC/DC converter.nb_NO
dc.language.isoengnb_NO
dc.publisherIEEEnb_NO
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 Internasjonal*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/deed.no*
dc.titleControl of Three-Phase Solid-State Transformer with Phase-Separated Configuration for Minimized Energy Storage Capacitorsnb_NO
dc.typeJournal articlenb_NO
dc.typePeer reviewednb_NO
dc.description.versionacceptedVersionnb_NO
dc.rights.holderIEEEnb_NO
dc.source.journalIEEE Journal of Emerging and Selected Topics in Power Electronicsnb_NO
dc.identifier.doi10.1109/JESTPE.2019.2923785
dc.identifier.cristin1733814


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Attribution-NonCommercial-NoDerivatives 4.0 Internasjonal
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