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Anti-saturation Shielding Coil with Coupling Enhancement for Wireless EV Charging

  • Pengcheng Zhang
  • , Xinjie Yu
  • , Qingxin Yang
  • , Xian Zhang
  • , Yongjian Li
  • , Zhaoyang Yuan
  • Tsinghua University
  • Tianjin University of Technology
  • Hebei University of Technology

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The digest proposes a shielding coil featuring anti-saturation and coupling enhancement for wireless electric vehicle (EV) charging. The shielding coil is powered by the induced current and operates under reactive shielding mode using a tunable capacitor. By adjusting the connection of the dotted terminals, the direction of the current in each part of the shielding coil is designated. The coupling enhancement is achieved by the inner shielding coil carrying the current in-phase with the trans-mitting coil. The solenoids wounded on four edges of the ferrite generates opposing fluxes on corresponding edges to reduce the magnetic flux density in the ferrite to prevent saturation. The outer shielding coil carries current in a reversed direction of the transmitting current to reduce the leakage field outside of the target area. The proposed design significantly reduces the magnetic flux intensity in the ferrite to prevent saturation while not distinctively impact the coupling enhancement in one coil design.

Original languageEnglish
Title of host publicationCEFC 2022 - 20th Biennial IEEE Conference on Electromagnetic Field Computation, Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781665468336
DOIs
StatePublished - 2022
Externally publishedYes
Event20th Biennial IEEE Conference on Electromagnetic Field Computation, CEFC 2022 - Virtual, Online, United States
Duration: 24 Oct 202226 Oct 2022

Publication series

NameCEFC 2022 - 20th Biennial IEEE Conference on Electromagnetic Field Computation, Proceedings

Conference

Conference20th Biennial IEEE Conference on Electromagnetic Field Computation, CEFC 2022
Country/TerritoryUnited States
CityVirtual, Online
Period24/10/2226/10/22

Keywords

  • coupling
  • EV
  • saturation
  • shielding
  • wireless power transfer

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