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TitleA proposed bidirectional three-level DC-DC power converter for applications in smart grids: an experimental validation
Author(s)Monteiro, Vítor Duarte Fernandes
Sousa, Tiago J.C.
Sepulveda, M. J.
Couto, Carlos
Lima, António
Afonso, João L.
Keywordsdc-dc Converter
Electric Mobility
Energy Storage System
Renewable Energy Source
Smart Grids
Issue date2019
PublisherInstitute of Electrical and Electronics Engineers Inc.
Abstract(s)The integration of renewable energy sources (RES), energy storage systems (ESS), and electric mobility into smart grids requires the use of DC-DC back-end power converters for adjusting voltage levels. Although a DC-DC converter applied for RES only operates in unidirectional mode, when applied to ESS or EM, the bidirectional mode is a fundamental requisite for exchanging power with the electrical power grid. In this context, this paper presents an experimental validation of a proposed bidirectional three-level DC-DC converter considering its application for smart grids. Traditionally, the DC-DC power converters of such applications are two-level converters. However, by employing a three-level topology, it is possible to improve the quality of the variables controlled by the power converter. Moreover, since the proposed DC-DC converter is controlled to produce a controlled current, the proposed current control and modulation strategies are introduced and described. A complete analysis of the operation principle of the proposed bidirectional three-level DC-DC power converter is presented, supported by experimental validation, employing a laboratory prototype.
TypeConference paper
Publisher version
AccessOpen access
Appears in Collections:CAlg - Artigos em livros de atas/Papers in proceedings

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