A systematic comparison of hard- and soft-switching topologies for inductive power transfer systems

This paper provides a comparison of four series-series compensated inductive power transfer systems for contact-less vehicle charging. A systematic comparison between hard-and soft-switching topologies, as well as different operating frequencies, is performed and the impacts on system efficiency and...

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Published in2014 4th International Electric Drives Production Conference (EDPC) pp. 1 - 8
Main Authors Diekhans, Tobias, Stewing, Felix, Engelmann, Georges, van Hoek, Hauke, De Doncker, Rik W.
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.09.2014
Subjects
Batteries
Coils
Copper
Ferrites
Inverters
Topology
Vehicles
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Summary:This paper provides a comparison of four series-series compensated inductive power transfer systems for contact-less vehicle charging. A systematic comparison between hard-and soft-switching topologies, as well as different operating frequencies, is performed and the impacts on system efficiency and complexity are assessed in detail. In a holistic design process each system is individually optimized for a charging power of 3kW and a variable air gap from 100mm to 170mm at a coil diameter of 500mm. It is shown that the hard-switching topologies are highly attractive in the considered power range even with state of the art semiconductors. By introducing a dual-side controlled topology a superior system efficiency is demonstrated at an operating frequency of 35 kHz.
ISBN:9781479950089
1479950084
DOI:10.1109/EDPC.2014.6984420