Journal of Power Electronics

The Korean Institute of Power Electronics (전력전자학회)
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Design of a misalignment-tolerant wireless charging system based on multidimensional cross-coupling for autonomous underwater vehicles

  • Chunwei, Cai (School of New Energy, Harbin Institute of Technology) ;
  • Qinyuan, Cui (School of New Energy, Harbin Institute of Technology) ;
  • Xiangyao, Meng (Naval Research Institute of PLA) ;
  • Shuai, Wu (School of New Energy, Harbin Institute of Technology) ;
  • Wenping, Chai (School of New Energy, Harbin Institute of Technology)
  • Received : 2022.03.30
  • Accepted : 2022.07.20
  • Published : 2022.12.20
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Abstract

In this paper, a misalignment-tolerant wireless charging system based on multidimensional cross-coupling for autonomous underwater vehicles (AUVs) is proposed. The four transmitting coils of the proposed system magnetic coupler are divided evenly into two pairs as bipolar transmitting units. Subsequently, the uniform multi-dimensional horizontal magnetic flux can be obtained by two current vectors with a 90° phase difference exciting in the bipolar transmitting units. For the receiver, a couple of orthogonal coils are designed to form cross-coupling with the transmitter to pick up the maximum magnetic flux. Then, the proposed magnetic coupler combined with the proposed transmitter and receiver is designed through finite element analysis. Finally, a 900 W prototype is built and tested. Experimental results show that the system has stable output characteristics in the ranges of a -20° to 20° rolling misalignment and a -30 to 30 mm axial misalignment.

Keywords

Acknowledgement

This research was supported by National Natural Science Foundation of China (Grant 52177002) and Natural Science Foundation of Shandong Province (Grant ZR2019MEE052).

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