Research on Foreign Object Detection Technology in Wireless Charging System for Electric Vehicles

DOI

10.2991/pntim-19.2019.50How to use a DOI?

Keywords

Wireless Charging; Dual-Frequency; Foreign Object Detection

Abstract

Foreign object detection is an important issue that restricts the development of wireless charging for electric vehicles. When foreign matter enters the charging area during charging, the impedance of the charging coil changes. According to this principle, the result shows that the higher the coil excitation frequency, the more obvious the coil impedance changes. In order to carry out accurate foreign object detection while charging, this paper proposes a dual-frequency inductive charging method. The high frequency is used for foreign object detection, the low frequency is used for wireless charging, the power supply topology and design method are given, and the simulation is verified.

Copyright

© 2019, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Liu Changke
AU  - Shang Yaceng
AU  - Lai Hao
AU  - Sun Kaidong
PY  - 2019/11
DA  - 2019/11
TI  - Research on Foreign Object Detection Technology in Wireless Charging System for Electric Vehicles
BT  - Proceedings of the 2019 International Conference on Precision Machining, Non-Traditional Machining and Intelligent Manufacturing (PNTIM 2019)
PB  - Atlantis Press
SP  - 246
EP  - 250
SN  - 2589-4943
UR  - https://doi.org/10.2991/pntim-19.2019.50
DO  - 10.2991/pntim-19.2019.50
ID  - Changke2019/11
ER  -