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Extending the ZVS Operating Range of Dual Active Bridge High-Power DC-DC Converters

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6 Author(s)
Oggier, G.G. ; Sch. of Eng., Rio Cuarto Nat. Univ. ; Ledhold, R. ; Garcia, G.O. ; Oliva, A.R.
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A switching control strategy to extend the soft-switching operating range of the dual active bridge (DAB) DC-DC converter under the zero-voltage-switching (ZVS) operating mode is proposed. The converter topology consists of two active bridges linked by a high-frequency transformer. One drawback of this strategy is that soft-switching is only possible in a restricted converter operating region. A novel pulse width modulation strategy to extend the conventional soft-switching operating mode region and its analysis are presented in this paper. Experimental results are given in order to validate the theoretical analysis and practical feasibility of the proposed strategy

Published in:

Power Electronics Specialists Conference, 2006. PESC '06. 37th IEEE

Date of Conference:

18-22 June 2006