A Buck-Boost Series Partial Power Converter using a Three-Port Structure for Electric Vehicle Charging Stations

Conference paper (2021)

Authors

Sebastian Rivera Universidad de los Andes, Chile

Freddy Flores-Bahamonde Universidad Andres Bello

Hugues Renaudineau Universidad Técnica Federico Santa María

Tomislav Dragicevic Technical University of Denmark

Samir Kouro Universidad Técnica Federico Santa María

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Published Date

24-05-2021

Language

English

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Abstract

This paper explores a novel three-port series-partial-power converter structure to enable electric vehicle (EV) fast chargers. Besides handling a fraction of the power being delivered to the battery, the converter provides both step up and step down of its output voltage, hence being able to interface legacy 400-V as well as state-of-the-art 800-V EVs. Compared to existing partial power converters with both buck and boost capability, the proposed three-port structure is shown to be able to operate over a wider range of operation. Simulation results show the effectivness of the proposed converter, reaching 98.65% maximum efficiency. The proposed topology is finally verified to be an interesting alternative for the dc-dc stages in EV charging stations.