Efficiency improvement for multi-position of receiver in 13.56 MHz wireless power transfer coupling system

Nguyen Tri Cuong, Kan Akatsu

Research output: Contribution to conferencePaper

Abstract

In the dynamic wireless charging for electric vehicle (EV), the relative position of energy transmitter and receiver depends on the movement of EV. Therefore the average efficiency is low in charging area when the EV runs away from the optimized position of the transfer system. In this paper, the solution to improve the efficiency due to the variation of charging position is proposed. The coupling system is strongly coupled magnetic resonance (SCMR) technology. The impedance is dynamically matched in the transmitter to improve the transfer efficiency. In the simulation, the 91.2% highest efficiency at 55 cm is designed and it is improved maximum 56.4% within 55 cm transfer distance and 40 cm misalignment with the proposed solution. Moreover, the experimental system can automatically improve the efficiency depending on the position of receiver and lookup data.

Original languageEnglish
Publication statusPublished - 2018 Jan 1
Event31st International Electric Vehicle Symposium and Exhibition, EVS 2018 and International Electric Vehicle Technology Conference 2018, EVTeC 2018 - Kobe City, Japan
Duration: 2018 Sep 302018 Oct 3

Conference

Conference31st International Electric Vehicle Symposium and Exhibition, EVS 2018 and International Electric Vehicle Technology Conference 2018, EVTeC 2018
CountryJapan
CityKobe City
Period18/9/3018/10/3

Keywords

  • 13.56 MHz
  • Efficiency Improvement
  • Magnetic Resonance
  • Wireless Power Transfer

ASJC Scopus subject areas

  • Fuel Technology
  • Automotive Engineering
  • Electrical and Electronic Engineering

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  • Cite this

    Cuong, N. T., & Akatsu, K. (2018). Efficiency improvement for multi-position of receiver in 13.56 MHz wireless power transfer coupling system. Paper presented at 31st International Electric Vehicle Symposium and Exhibition, EVS 2018 and International Electric Vehicle Technology Conference 2018, EVTeC 2018, Kobe City, Japan.