Real-time coupling coefficient estimation and maximum efficiency control on dynamic wireless power transfer for electric vehicles

Daita Kobayashi, Takehiro Imura, Yoichi Hori

Research output: Chapter in Book/Report/Conference proceedingConference contribution

52 Citations (Scopus)

Abstract

Maximum efficiency control using a DC/DC converter on the secondary side can improve transmitting efficiency in dynamic wireless power transfer system for electric vehicles. However, the information of coupling coefficient has to be estimated to implement the control although coupling coefficient changes dynamically. In this paper, a simple method of coupling coefficient estimation with RLS (Recursive least squares) filter is proposed. Dynamics of WPT system is analyzed with transfer functions. Moreover, the modeling and the control method of DC/DC converter are introduced. The experimental results of real-time coupling coefficient estimation and maximum efficiency control are provided and they indicate the effectiveness of the proposed control in a real dynamic wireless power transfer system for EVs.

Original languageEnglish
Title of host publicationIEEE WoW 2015 - IEEE PELS Workshop on Emerging Technologies
Subtitle of host publicationWireless Power, Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781479966097
DOIs
Publication statusPublished - 24 Jun 2015
Event1st IEEE PELS Workshop on Emerging Technologies: Wireless Power, IEEE WoW 2015 - Daejeon, Korea, Republic of
Duration: 5 Jun 20156 Jun 2015

Publication series

NameIEEE WoW 2015 - IEEE PELS Workshop on Emerging Technologies: Wireless Power, Proceedings

Conference

Conference1st IEEE PELS Workshop on Emerging Technologies: Wireless Power, IEEE WoW 2015
CountryKorea, Republic of
CityDaejeon
Period5/06/156/06/15

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Keywords

  • control
  • coupling coefficient estimation
  • DC/DC converter
  • dynamic wireless power transfer
  • electric vehicle

Cite this

Kobayashi, D., Imura, T., & Hori, Y. (2015). Real-time coupling coefficient estimation and maximum efficiency control on dynamic wireless power transfer for electric vehicles. In IEEE WoW 2015 - IEEE PELS Workshop on Emerging Technologies: Wireless Power, Proceedings [7132799] (IEEE WoW 2015 - IEEE PELS Workshop on Emerging Technologies: Wireless Power, Proceedings). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/WoW.2015.7132799