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      Soft-switching operation of the dual-interleaved boost converter over all duty ratios

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          Abstract

          To extend the operating range of the snubber assisted zero-voltage and zero-current transition dual-interleaved boost converter beyond its inherent soft-switching limit of D = 0.5, a resonant pulse transformer is proposed instead of the resonant inductor. The 1 : 2 turns ratio of the transformer ensures full discharge of the snubber capacitor at all duty ratio values to facilitate zero-voltage zero-current switching at turn on of the main switching devices. The effectiveness of the topology has been confirmed by SPICE simulation and demonstrated by a 20 kW SiC metal–oxide–semiconductor field-effect transistor converter. The prototype operated at 20 kW, 112 kHz, 320–600 V achieving 98.7% efficiency and achieved 98.2% efficiency at 6 kW. Taking the additional losses in the auxiliary circuit into account, the switching losses at 20 kW are reduced by 74% compared with hard-switching operation, representing a 54% reduction in overall losses.

          Most cited references10

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          Assessment of Coupled and Independent Phase Designs of Interleaved Multiphase Buck/Boost DC–DC Converter for EV Power Train

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            A bidirectional soft switched ultracapacitor interface circuit for hybrid electric vehicles

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              Analysis of Diode Reverse Recovery Effect on the Improvement of Soft-Switching Range in Zero-Voltage-Transition Bidirectional Converters

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                Author and article information

                Contributors
                Journal
                IET-PEL
                IET Power Electronics
                IET Power Electron.
                The Institution of Engineering and Technology
                1755-4535
                1755-4543
                26 May 2017
                11 July 2017
                9 September 2017
                : 10
                : 11
                : 1250-1258
                Affiliations
                School of Electrical and Electronic Engineering, The University of Manchester , Manchester, UK
                Article
                IET-PEL.2016.0861 PEL.SI.2016.0861.R2
                10.1049/iet-pel.2016.0861
                4cd39cd1-49d8-43b0-b0f8-cc58b973234e

                This is an open access article published by the IET under the Creative Commons Attribution License ( http://creativecommons.org/licenses/by/3.0/)

                History
                : 18 October 2016
                : 25 April 2017
                : 24 May 2017
                Page count
                Pages: 0
                Funding
                Funded by: UK Engineering and Physical Sciences Research Council (EPSRC) National Centre for Power Electronics
                Award ID: EP/K035096/1
                Categories
                Special Section: Selected papers from the 8th International Conference on Power Electronics, Machines and Drives (PEMD 2016)

                Computer science,Engineering,Artificial intelligence,Electrical engineering,Mechanical engineering,Renewable energy
                zero current switching,zero voltage switching,switching convertors,MOSFET,soft-switching operation,dual-interleaved boost converter,resonant pulse transformer,resonant inductor,snubber capacitor,duty ratio values,zero-voltage zero-current switching,switching devices,SPICE simulation,metal-oxide-semiconductor field-effect transistor converter,silicon carbide,auxiliary circuit,switching losses,hard-switching operation

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