A multicell Dual-Active Bridge converter for increasing the reliability of power supply in a DC microgrid

This paper presents a multicell Dual-Active Bridge (DAB) converter that can increase the reliability of the power supply in a dc microgrid. The main feature of the proposed interconnection scheme is that it can supply power to a load even if one of its converters is taken out of operation or fail. T...

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Bibliographic Details
Published in2015 IEEE First International Conference on DC Microgrids (ICDCM) pp. 274 - 279
Main Authors Mamede, Henrique R., dos Santos, Walbermark M., Coelho, Roberto F., Martins, Denizar C.
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.06.2015
Subjects
Bridge circuits
DC Microgrid
Dual-Active Bridge
High reliability
Integrated circuit interconnections
Microgrids
Multicell
Power supplies
Redundancy
Solid-State Transformer
Voltage control
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DOI10.1109/ICDCM.2015.7152053

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Summary:This paper presents a multicell Dual-Active Bridge (DAB) converter that can increase the reliability of the power supply in a dc microgrid. The main feature of the proposed interconnection scheme is that it can supply power to a load even if one of its converters is taken out of operation or fail. This is accomplished because each cell is composed by a number of DAB converters interconnected in parallel in both of its ports, in that manner, when one of its converters is driven not to process power or is subject to a failure the others share that power keeping the load supplied. Then, in order to achieve a high voltage gain with lower voltage stresses on the switches, the cells are interconnected in parallel in one of its ports (low-voltage bus) and in series in the other (high-voltage bus) implementing a solidstate transformer (SST).
DOI:10.1109/ICDCM.2015.7152053