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.
Original languageEnglish
Title of host publication2021 IEEE 15th International Conference on Compatibility, Power Electronics and Power Engineering (CPE-POWERENG)
PublisherIEEE
Pages1-8
Number of pages8
ISBN (Electronic)978-1-7281-8071-7
ISBN (Print)978-1-7281-8072-4
DOIs
Publication statusPublished - 2021
Event2021 IEEE 15th International Conference on Compatibility, Power Electronics and Power Engineering (CPE-POWERENG) - Hybrid Conference at Florence, Italy
Duration: 14 Jul 202116 Jul 2021
Conference number: 15th

Conference

Conference2021 IEEE 15th International Conference on Compatibility, Power Electronics and Power Engineering (CPE-POWERENG)
CountryItaly
CityHybrid Conference at Florence
Period14/07/2116/07/21

Bibliographical note

Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care
Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.

Keywords

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

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