Protection Strategy for Wireless Charging Electrical Vehicles

Wireless charging has become increasingly popular for electric vehicles (EVs) in recent years. However, possible device damage may happen because of the sharp variations of inverter output current and the ZVS angle due to the alignment variation between resonant coils especially while charging. To design a protection strategy, the characters of the inverter output current and phase angle are analyzed when the wireless charging EV leaves. The protection strategy is composed of the insufficient angle protection, overcurrent protection, and the excessive angle protection. A detection circuit is designed to measure the variation of inverter output current and phase angle. A wireless charging EV prototype is established to validate the proposed methods. The experimental results show that the designed detection circuit and protection strategy can catch the abnormal working state of the system when the wireless charged EV leaves and take measures immediately to protect the main circuit of the system from device damages.

• Record URL:
  • https://doi.org/10.1109/TVT.2020.3029798
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00189545
• Supplemental Notes:
  • Copyright © 2020, IEEE.
• Authors:
  • Zhou, Hong
  • Zhu, Ao
  • Deng, Qijun
  • Chen, Jing
  • Yang, Feng
  • Hu, Wenshan
• Publication Date: 2020-11

Language

• English

Media Info

• Media Type: Web
• Features: References;
• Pagination: pp 13510-13520
• Serial:
  • IEEE Transactions on Vehicular Technology
  • Volume: 69
  • Issue Number: 11
  • Publisher: Institute of Electrical and Electronics Engineers (IEEE)
  • ISSN: 0018-9545
  • Serial URL: http://ieeexplore.ieee.org/xpl/mostRecentIssue.jsp?punumber=25

Subject/Index Terms

• TRT Terms: Electric power transmission; Electric vehicle charging; Electric vehicles; Electrical impedance; Electromagnetic coils; Inductance; Inverters; Topology; Voltage; Wireless communication systems
• Subject Areas: Energy; Highways; Vehicles and Equipment;

Filing Info

• Accession Number: 01760604
• Record Type: Publication
• Files: TRIS
• Created Date: Dec 21 2020 10:05AM