dc.contributor.author | Isobe, Takanori | |
dc.contributor.author | Barrera-Cardenas, Rene A. | |
dc.contributor.author | He, Zijin | |
dc.contributor.author | Zou, Yang | |
dc.contributor.author | Terazono, Katsushi | |
dc.contributor.author | Tadano, Hiroshi | |
dc.date.accessioned | 2019-10-04T08:00:51Z | |
dc.date.available | 2019-10-04T08:00:51Z | |
dc.date.issued | 2019 | |
dc.identifier.issn | 2168-6777 | |
dc.identifier.uri | http://hdl.handle.net/11250/2620211 | |
dc.description.abstract | This 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.iso | eng | nb_NO |
dc.publisher | IEEE | nb_NO |
dc.rights | Attribution-NonCommercial-NoDerivatives 4.0 Internasjonal | * |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/deed.no | * |
dc.title | Control of Three-Phase Solid-State Transformer with Phase-Separated Configuration for Minimized Energy Storage Capacitors | nb_NO |
dc.type | Journal article | nb_NO |
dc.type | Peer reviewed | nb_NO |
dc.description.version | acceptedVersion | nb_NO |
dc.rights.holder | IEEE | nb_NO |
dc.source.journal | IEEE Journal of Emerging and Selected Topics in Power Electronics | nb_NO |
dc.identifier.doi | 10.1109/JESTPE.2019.2923785 | |
dc.identifier.cristin | 1733814 | |