New Analytical Formulas for Coupling Coefficient of Two Inductively Coupled Ring Coils in Inductive Wireless Power Transfer System

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Abstract

In this paper, an analytical formula for the coupling coefficient (k) was introduced for two inductively coupled coils of ring configuration. The response surface methodology (RSM) was used as a tool to develop this formula. The k was tested as a function of the geometrical parameters which include the followings parameters: an air-gap (d) between inductively coupled coils; coils dimensions which include the inner (r1) and outer (r2) radii of the transmitter coil, inner (R1) and outer (R2) radii of the receiver coil; and misalignment parameters. Therefore, the introduced k formula is facilitating of a ring coil design, performance optimization of an IPT system, and prediction of system behaviour at normal or misalignment cases. The percentage effect of each parameter on the k was calculated. It was found that the d has the most considerable impact on the k among other geometrical parameters.

Original languageEnglish
Title of host publicationGreen Energy and Networking - 7th EAI International Conference, GreeNets 2020, Proceedings
EditorsXiaolin Jiang, Peng Li
Place of PublicationCham
PublisherSpringer
Pages117-127
Number of pages11
ISBN (Electronic)978-3-030-62483-5
ISBN (Print)978-3-030-62482-8
DOIs
Publication statusPublished - 2020
Event7th International Conference on Green Energy and Networking, GreeNets 2020 - Harbin, China
Duration: 27 Jun 202028 Jun 2020

Publication series

NameLecture Notes of the Institute for Computer Sciences, Social-Informatics and Telecommunications Engineering, LNICST
PublisherSpringer
Volume333
ISSN (Print)1867-8211

Conference

Conference7th International Conference on Green Energy and Networking, GreeNets 2020
CountryChina
CityHarbin
Period27/06/2028/06/20

Keywords

  • Battery charging
  • Box-Behnken design
  • Coupling coefficient
  • Electric vehicles
  • Inductive power transfer
  • Response surface methodology
  • Ring coil
  • Wireless power transfer

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