Journal of Power Electronics

The Korean Institute of Power Electronics (전력전자학회)
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Compact inductive and capacitive combined wireless power transfer system for unmanned aerial vehicle applications

  • Wenping Chai (School of New Energy, Harbin Institute of Technology) ;
  • Xichen Liu (School of New Energy, Harbin Institute of Technology) ;
  • Shuai Wu (School of New Energy, Harbin Institute of Technology) ;
  • Chunwei Cai (School of New Energy, Harbin Institute of Technology)
  • Received : 2023.04.24
  • Accepted : 2023.12.07
  • Published : 2024.04.20
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Abstract

This paper proposes a novel inductive and capacitive combined wireless power transfer (IC-WPT) system for unmanned aerial vehicle (UAV) applications. First, a new compact inductive and capacitive combined coupler is presented. The magnetic field coupled power transmission of the compact coupler contains one magnetic transmitting unit, which is composed of two biorthogonal L-type cores and two rectangular coils wound on each of the short edges of the L-type ferrite core in the vertical position, and two air-cored receiving coils embedded in the legs. Meanwhile, the electric field coupled power transmission of the compact coupler consists of four pieces of copper foil, where two are attached on the primary side and two are attached on the secondary sides for wireless energy transmission through capacitive coupling. Second, a simple resonant compensation network is developed for the IC-WPT system. To make the secondary side lightweight, the receiver self-inductance of the inductive power transfer (IPT) coupler and compensating capacitance of the capacitive power transfer (CPT) receiver can be used to compensate each other. A prototype of the proposed UAV IC-WPT system is built and tested. Experimental results show that the wireless power transfer system can deliver 130 W at an efficiency of 81.2%, which means it can be adopted to the autonomous charging of UAVs.

Keywords

Acknowledgement

This work was supported in part by the Natural Science Foundation of Shandong Province of China under Grant ZR2022QE152, and in part by the National Natural Science Foundation of China (NSFC) under Grant 52301398.

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