Fringing Effect Analysis of Parallel Plate Capacitors for Capacitive Power Transfer Application

Xu Chen, Zhe Zhang, Shengbao Yu, Tiberiu-Gabriel Zsurzsan

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Abstract

The classical formula of a parallel plate capacitor (PP-Cap) does not take fringing effects into consideration, which assumes that the side length of a PP-Cap is by far larger than the distance between the two plates. However, for capacitive power transfer applications, especially those designed for electric vehicle charging, this assumption no longer holds since the distance can be as large as 150 mm. Based on conformal mapping, the corrected or improved formula of PP-Cap with the consideration of fringing effect can be obtained; nevertheless, some approximations are introduced for the convenience of
calculation. By finite element method (FEM) simulation and experimental measurement, this paper investigates the influencing factors of large distance PP-Cap especially in the capacitive power transfer application and thereby the proposed formula with improved accuracy is verified.
Original languageEnglish
Title of host publicationProceedings of 4th IEEE International Future Energy Electronics Conference
Number of pages5
PublisherIEEE
Publication date2019
ISBN (Print)978-1-7281-3153-5
Publication statusPublished - 2019
Event4th IEEE International Future Energy Electronics Conference - Parkroyal on Beach Road, Singapore, Singapore
Duration: 25 Nov 201928 Nov 2019
http://www.ifeec.tw/

Conference

Conference4th IEEE International Future Energy Electronics Conference
LocationParkroyal on Beach Road
CountrySingapore
CitySingapore
Period25/11/201928/11/2019
Internet address

Keywords

  • Capacitive power transfer
  • Conformal mapping
  • Fringing effect
  • Wireless power transfer

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