A modified 12-Pulse Three-Phase Bidirectional Dual Active Bridge DC/DC Converter for E-Vehicles Applications

Konferenz: PCIM Europe 2019 - International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management
07.05.2019 - 09.05.2019 in Nürnberg, Deutschland

Tagungsband: PCIM Europe 2019

Seiten: 8Sprache: EnglischTyp: PDF

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de Oliveira, Eduardo Facanha; Zacharias, Peter (University of Kassel, KDEE-EVS, Germany)

This paper presents an isolated bidirectional DC-DC converter for the use in electrical vehicles on-board power supply systems. For this purpose, a modified 12-pulse three-phase DAB is evaluated. A second low voltage bridge is added to the original circuit, so that the topology now works with six transformers, being two transformers per phase connected in series on the high voltage side and in parallel on the low voltage side. Furthermore, the primary side and one of the secondaries present a wye connection, whereas the other secondary side is δ connected. The steady-state operation principle of the proposed topology has been studied and design parameters of the isolation transformer are analytically determined. Although the higher number of components, it is expected to achieve a design with higher efficiency, compactness and lower filter requirements.