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

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

28 Scopus Citations
View graph of relations


Related Research Unit(s)


Original languageEnglish
Number of pages5
Journal / PublicationIEEE Transactions on Magnetics
Issue number11
Online published26 Jun 2018
Publication statusPublished - Nov 2018


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.

Research Area(s)

  • Coil misalignment, Current measurement, dynamic wireless charging (DWC), magnetic field measurement, Magnetic resonance, Magnetic tunneling, Sensor arrays, Solid modeling, Tunneling magnetoresistance, tunneling magnetoresistive (TMR) sensor