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Title: Modeling the effect of dead-Time on the soft-switching characteristic of variable-frequency modulated series-resonant DAB converter
Authors: Yaqoob, M 
Loo, KH 
Lai, YM 
Keywords: Conduction loss
DC-DC converter
Frequency modulation
Switching loss
Zero-voltage switching
Issue Date: 2017
Publisher: Institute of Electrical and Electronics Engineers
Source: 2017 IEEE 18th Workshop on Control and Modeling for Power Electronics, COMPEL 2017, 2017, 8013306, p. 2 How to cite?
Abstract: Under wide-range variations in output current and voltage, dual-Active-bridge (DAB) converter can operate with increased conduction and switching loss. A variable frequency-based power modulation scheme for an LC-Type series resonant DAB converter is presented to achieve minimum-Tank-current operation along with full-range soft switching. The proposed minimum-Tank-current operation establishes an in-phase relationship between tank current and secondary-side voltage (low voltage and high current), which allows the switching devices of DAB converter to operate in soft-switching region. Resonant transitions of parasitic capacitances within the dead-Time interval of switching devices are considered to avoid incomplete soft switching. Simulation and experimental results show the effectiveness of the proposed method with a maximum efficiency of 96.8 %.
ISBN: 9781509053261
DOI: 10.1109/COMPEL.2017.8013306
Appears in Collections:Conference Paper

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