A Comprehensive Investigation of Thermal Risks in Wireless EV Chargers Considering Spatial Misalignment from A Dynamic Perspective

Songyan Niu1; Qingyu Zhao1; Shuangxia Niu2; Linni Jian3

2024

10.1109/JESTIE.2024.3417244

IEEE Journal of Emerging and Selected Topics in Industrial Electronics   影响因子和分区

2687-9743

As wireless electric vehicle charging (WEVC) technology moves toward commercialization, understanding its associated risks is crucial, particularly with the trend toward high-power fast charging. In this paper, thermal risks and factors exacerbating the risks in wireless EV chargers are investigated comprehensively, focusing on the magnetic coupler and foreign objects (FOs) intruding on the charging area. The power losses and temperatures of the coupler and FOs are obtained using a two-way electromagnetic-thermal coupled model, and the coupler will be assigned to a risk level according to the proposed four-temperature-level risk evaluation mechanism. In this model, practical considerations include coil types, misalignments, FO materials, ambient temperatures, etc. Moreover, a dynamic perspective is used to characterize the trend of risks so as to provide predictive insights. To validate the newly identified risks, two 6.6-kW WEVC prototypes are built employing circular coils and DD coils, respectively. Experimental studies confirm the necessity of implementing thermal risk management strategies for magnetic coupler under misaligned conditions such as enhanced cooling, including a wider range of materials for foreign object detection (FOD), expanding the FOD area, and so forth.

EI

第一

1.Southern University of Science and Technology Jiaxing Research Institute, Jiaxing, China
2.The Hong Kong Polytechnic University, Kowloon, China
3.Southern University of Science and Technology, Shenzhen, China

Songyan Niu,Qingyu Zhao,Shuangxia Niu,et al. A Comprehensive Investigation of Thermal Risks in Wireless EV Chargers Considering Spatial Misalignment from A Dynamic Perspective[J]. IEEE Journal of Emerging and Selected Topics in Industrial Electronics,2024,PP(99).

Songyan Niu,Qingyu Zhao,Shuangxia Niu,&Linni Jian.(2024).A Comprehensive Investigation of Thermal Risks in Wireless EV Chargers Considering Spatial Misalignment from A Dynamic Perspective.IEEE Journal of Emerging and Selected Topics in Industrial Electronics,PP(99).

Songyan Niu,et al."A Comprehensive Investigation of Thermal Risks in Wireless EV Chargers Considering Spatial Misalignment from A Dynamic Perspective".IEEE Journal of Emerging and Selected Topics in Industrial Electronics PP.99(2024).