Optimized design of the detection coils for the metal foreign object detection system applied to wireless power transfer

Energy Reports

Huiqiang Zhai¹  Xianglin Li²  Zhizhen Liu³  Guowen Feng³  Xueqing Luo³  Yanjin Hou⁴ 

[1] Corresponding author.;Energy Research Institute, Qilu University of Technology (Shandong Academy of Sciences), Keyuan Road 19, Jinan 250014, China;School of Electrical Engineering, Shandong University, Jingshi Road 17923, Jinan 250061, China;State Grid Henan Electric Power Research Institute, Songshan Road 87, Zhengzhou 450052, China;

关键词: Metal foreign object detection;    Detection coil;    Wireless power transfer;    Optimized design;   

DOI  :  

来源: DOAJ

【 摘 要 】

In order to improve the safety and reliability of electric vehicle wireless charging, foreign object detection is an indispensable auxiliary function. In this paper, the equivalent model of foreign object detection circuit is firstly established, and then the foreign object detection principle based on active detection coil is analyzed from the angle of the circuit and magnetic circuit. Then the optimization scheme of metal foreign object detection coil is proposed through simulation comparison and analysis. The results show that the design proposed in this paper can increase the maximum value of |Bz| to 3.6 mT, effectively improving the accuracy of metal foreign object detection.

【 授权许可】

Unknown