access icon free Comparative analysis between integrated full-bridge-forward and dual active bridge DC–DC converters

The dual active bridge (DAB) is the mostly used DC–DC converter in bidirectional power flow applications. It has several advantages such as high-power density, galvanic isolation, robustness, among others. However, in applications in which direct and reverse power flow have great difference, the converter efficiency can be penalised. A recent proposed isolated converter known as integrated full-bridge-forward DC–DC converter is specifically designed to this application and has low number of active devices compared to DAB converter. In order to evaluate the features of both converters, this Letter proposes a comparative analysis between these two topologies. Besides theoretical details about the converters, this Letter focuses on the comparison of experimental results, including efficiency and zero voltage switching range.

Inspec keywords: load flow; zero voltage switching; DC-DC power convertors

Other keywords: DAB converter; galvanic isolation; isolated converter; zero voltage switching range; integrated full-bridge-forward DC-DC converters; reverse power flow; converter efficiency; bidirectional power flow application; high-power density; active devices; dual active bridge DC-DC converters

Subjects: Power electronics, supply and supervisory circuits; DC-DC power convertors

References

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      • 3. Nowak, M., Hildebrandt, J., Luniewski, P.: ‘Converters with AC transformer intermediate link suitable as interfaces for supercapacitor energy storage’. IEEE Power Electron. Spec. Conf., Aachen, Germany, June 2004, vol. 5, pp. 40674073, doi: 10.1109/PESC.2004.1355196.
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http://iet.metastore.ingenta.com/content/journals/10.1049/el.2017.3326
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