A super-sensitive metal object detection method for DD-coil-engaged wireless EV chargers by passive electromagnetic sensing

Niu, Shuangxia; Zhang, Cheng; Jian, Linni

doi:10.1016/j.egyr.2022.08.122

Energy Reports

2022

DOI: 10.1016/j.egyr.2022.08.122

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A super-sensitive metal object detection method for DD-coil-engaged wireless EV chargers by passive electromagnetic sensing

Shuangxia Niu

Cheng Zhang

Linni Jian

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2023

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Electric vehicle wireless charging system for the foreign object detection with the inducted coil with magnetic field variation

Alshammari,

Chabaan

2023

Nonlinear Engineering

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Foreign object detection is one of the most critical issues in electric vehicle wireless charging systems. This article proposes a foreign object detection scheme with an induced coil in the charging system. The proposed method uses a multifunctional tunneling resistance sensor matrix to detect the presence of a foreign metal object between the coils. An asymmetrical induction coil design scheme is proposed to eliminate the blind area. The suggested method utilizes size-modulated c-shaped coil units to remove invisible zones that result from the magnetic field’s axial uniformity. The induced voltage in the transmission coil is measured using ANSYS/MAXWELL software. The experimental results show that the suggested method has a number of benefits over regular even-sensing coils, including higher uniformity in the induced current, position-dependent detection sensitivity, and detection accuracy. It provides a feasible and affordable way to get around the drawbacks of the traditional detecting coil.

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Electric vehicle wireless charging system for the foreign object detection with the inducted coil with magnetic field variation

Alshammari,

Chabaan

2023

Nonlinear Engineering

View full text Add to dashboard Cite

show abstract

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A super-sensitive metal object detection method for DD-coil-engaged wireless EV chargers by passive electromagnetic sensing

Cited by 1 publication

References 11 publications

Electric vehicle wireless charging system for the foreign object detection with the inducted coil with magnetic field variation

Electric vehicle wireless charging system for the foreign object detection with the inducted coil with magnetic field variation

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