Journal of Power Electronics

The Korean Institute of Power Electronics (전력전자학회)
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Wireless charging system for unmanned aerial vehicles using lightweight and compact receiver modules

  • Yuhong Tian (College of Mechanical and Electrical Engineering, Northeast Forestry University) ;
  • Zhenjie Li (College of Mechanical and Electrical Engineering, Northeast Forestry University) ;
  • Hao Liu (College of Mechanical and Electrical Engineering, Northeast Forestry University) ;
  • Yiqi Liu (College of Mechanical and Electrical Engineering, Northeast Forestry University) ;
  • Mingfei Ban (College of Mechanical and Electrical Engineering, Northeast Forestry University) ;
  • Junyuan Zheng (College of Mechanical and Electrical Engineering, Northeast Forestry University)
  • Received : 2022.08.25
  • Accepted : 2022.11.14
  • Published : 2023.04.20
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Abstract

This paper proposes a wireless charging system (WCS) for unmanned aerial vehicles (UAVs) that features a lightweight and compact receiver module and constant current/constant voltage (CC/CV) charging. Optimizing the LCC-none compensation topology reduces the weight and volume of the receiver module mainly by avoiding the secondary-side resonant capacitors. In addition, high system performance similar to that of the LCC-S compensation topology is achieved. A magnetic coupler with dual power transfer channels is designed using the specifc structure of the UAV. The reasonable charging zone is determined by optimizing the magnetic coupler parameters. Besides, a primary-side PI-controlled Buck converter is used to realize CC/CV charging with a high system efciency under a suitable misalignment range to avoid the secondary-side circuit and control complexity. Finally, both simulation and experimental results verify the feasibility of the designed WCS. The total weight of the receiver coil is only 54 g. During 5 A CC charging, the tested maximum output power and system efciency values are 90 W and 87.2%, respectively.

Keywords

Acknowledgement

This work was supported by the National Natural Science Foundation of China under Grant no. 52107001, in part by China Postdoctoral Science Foundation under Grant no. 2022M710641, and in part by Fundamental Research Funds for the Central Universities under Grant no. 2572021BF04.

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