Marker-Free Coil-Misalignment Detection Approach Using TMR Sensor Array for Dynamic Wireless Charging of Electric Vehicles

Xuyang Liu, Wei Han, Chunhua Liu, Philip W.T. Pong

Research output: Contribution to journalArticlepeer-review

28 Scopus citations

Abstract

This paper presents an approach to detect the lateral coil misalignment for the dynamic wireless charging system using a tunneling magnetoresistive (TMR) sensor array. The component of the magnetic field generated from the transmitting coil can directly provide the information of the coil misalignment between transmitting and receiving coils. A sensor array composed of 15 uniaxial TMR sensors was implemented to measure the vector magnetic field for detecting the coil misalignment. Both 3-D finite-element method modeling and experimental results over a relatively large misalignment range were presented to substantiate the effectiveness and feasibility of the proposed approach.

Original languageEnglish (US)
Article number4002305
JournalIEEE Transactions on Magnetics
Volume54
Issue number11
DOIs
StatePublished - Nov 2018
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

Keywords

  • Coil misalignment
  • dynamic wireless charging (DWC)
  • magnetic field measurement
  • tunneling magnetoresistive (TMR) sensor

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