Please use this identifier to cite or link to this item: https://hdl.handle.net/1822/67358

TitleComparative analysis of power electronics topologies to interface dc homes with the electrical ac power grid
Author(s)Sousa, Tiago José Cunha
Monteiro, Vítor Duarte Fernandes
Martins, Júlio S.
Sepulveda, M. J.
Lima, Antonio
Afonso, João L.
KeywordsDc Homes
Power Electronics
Smart Grids
Issue dateSep-2019
PublisherIEEE
CitationTiago J. C. Sousa, Vítor Monteiro, Júlio S. Martins, M. J. Sepúlveda, António Lima, João L. Afonso, “Comparative Analysis of Power Electronics Topologies to Interface dc Homes with the Electrical ac Power Grid”, in 2nd International Conference on Smart Energy Systems and Technologies (SEST), pp. 1–6, Porto, Portugal, 9-11 September 2019.
Abstract(s)This paper presents a comparative analysis of power electronics topologies that can be used to interface dc homes with a 230 V, 50 Hz ac power grid. Dc homes represent an essential asset for smart grids, since energy storage systems and renewable energy sources, such as photovoltaic solar panels, operate in dc, as well as most of the electrical appliances used in domestic scenario. However, since the power grid operates in ac, it is necessary to convert voltage from ac to dc to properly supply a dc home. This conversion can be accomplished in several ways, with different power conversion stages. In this context, this paper analyzes three different possibilities that can be used to perform the interface between the ac power grid and a dc home: (1) ac-dc converter using a low frequency transformer; (2) ac-dc and dc-dc converters using a high frequency transformer; (3) ac-ac and ac-dc converters using a medium frequency transformer. These three possibilities are compared in terms of efficiency, total power factor and total harmonic distortion of the ac power grid. The results were obtained by means of a simulation model based on the internal parameters of the power semiconductors.
TypeConference paper
URIhttps://hdl.handle.net/1822/67358
ISBN9781728111568
DOI10.1109/SEST.2019.8849046
Publisher versionhttps://ieeexplore.ieee.org/document/8849046
Peer-Reviewedyes
AccessOpen access
Appears in Collections:CAlg - Artigos em livros de atas/Papers in proceedings

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