descriptionPublicationkeyboard_double_arrow_right Article , Conference object 14 Jul 2021Publisher:IEEEJournal:2021 IEEE 15th International Conference on Compatibility, Power Electronics and Power Engineering (CPE-POWERENG)

Authors: Yu, G. (author); Soeiro, Thiago B. (author); Dong, J. (author); Bauer, P. (author);

doi: 10.1109/cpe-powereng50821.2021.9501207

Study of Back-end DC/DC Converter for 3.7 kW Wireless Charging System according to SAE J2954

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Abstract

In a wireless charging system, a back-end DC/DC converter can be used after the coil rectification stage to match the battery charging requirements and to optimize the resonant converter operation. In this paper, a synchronous boost converter is selected according to suggested coil parameters from SAE J2954 standards on a WPT1 3.7 kW power class. This converter is analysed while cascaded to a resonant converter with series-series (S-S) compensation. The semiconductor and inductor losses under hard-switched continuous conduction mode (CCM) and triangular current mode (TCM) are calculated and compared. A benchmark study shows that both the TCM and CCM operations have similar performance of efficiency in constant current (CC) charging profile while TCM has a higher efficiency in the constant voltage (CV) charging profile of a Nissan Leaf EV battery.

Related Organizations

Delft University of Technology
Netherlands

Keywords

CCM, TCM, S-S, Battery, Boost Converter, Inductor

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