Compensation Network for a 7.7 kW Wireless Charging System that Uses Standardized Coils

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Abstract

Industrial wireless charging systems use standardized coils to guarantee interoperability between different manufacturers. In combination with these coils, the compensation network can still be designed and optimized. This paper explains the step-by-step design of the compensation network for a 7.7 kW wireless charging system (power class WPT2), which is composed of standardized coils. The compensation network must satisfy the output power and voltage requirements, the soft-switching of the inverter, and the limit of voltage and current stress on the components. The S-S compensation network is found to be unfeasible for those coils, and an optimized double-sided LCC compensation network is designed. The 3-phase grid connection is selected despite the 1-phase one because it gives the lowest total conduction losses. Finally, two parallel SiC MOSFETs C3M0075120K are chosen as inverter's switch because of their low conduction losses. This solution can achieve a payback time within a year with respect to the cheapest one.
Original languageEnglish
Title of host publication2020 IEEE International Symposium on Circuits and Systems (ISCAS)
Place of PublicationPiscataway
PublisherIEEE
Pages1-5
Number of pages5
ISBN (Electronic)978-1-7281-3320-1
ISBN (Print)978-1-7281-3321-8
DOIs
Publication statusPublished - 2020
EventISCAS 2020: IEEE International Symposium on Circuits and Systems - Sevilla, Spain
Duration: 10 Oct 202021 Oct 2020
https://iscas2020.org/

Conference

ConferenceISCAS 2020: IEEE International Symposium on Circuits and Systems
Abbreviated titleISCAS 2020
CountrySpain
CitySevilla
Period10/10/2021/10/20
Internet address

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

  • Compensation networks
  • electric vehicles (EVs)
  • inductive power transfer
  • standardized coils
  • wireless charging

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