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Frequency splitting characteristics analysis of capacitive wireless power transfer

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Abstract

In order to solve the problems of frequency splitting and low efficiency in wireless power transfer system, the capacitive coupled wireless power transfer system with double-side LCLC compensation topology is taken as the research object in this paper. The effect laws of variable parameters on the system output are analyzed by system modeling. The relationship between system efficiency and the important parameters is derived by the using circuit theory, and the system efficiency is analyzed in detail by using MATLAB simulation software. The experiment of wireless power transfer with electronic components is conducted in this paper. The existence of frequency splitting and frequency offset is proved by experiments, and the influence of frequency and coupling capacitance on the output efficiency of the system is verified. The results show that the frequency splitting of the system can be avoided by adjusting the capacitance of the coupling mechanism below the frequency split point. Fixing the relative position of the coupling plates, the system efficiency can be improved by increasing the frequency of the system to the efficiency key point.

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Funding

The research leading to these results received funding from [the National Natural Science Foundation of China] under Grant Agreement No. [U1804143].

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Authors and Affiliations

  1. School of Electrical Engineering and Automation, Henan Polytechnic University, Jiaozuo, Henan, China

    Zhuo Wang & Yanzhou Sun

  2. State Grid Anhui Electric Power Co., Ltd. Chuzhou Mingguang Power Supply Company, Mingguang, Anhui, China

    Rui Yang

  3. State Grid Zhejiang Electric Power Co., Ltd. Lishui Yunhe County Power Supply Company, Lishui, Zhejiang, China

    Mengfei Zhang

Authors
  1. Zhuo Wang
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  2. Yanzhou Sun
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  3. Rui Yang
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  4. Mengfei Zhang
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Contributions

ZW, the main finisher of the thesis, the corresponding author, is responsible for the writing of the research article, theoretical research and experimental operation. YS, co-author of the paper, is mainly responsible for the guidance of the content of the paper. RY, co-author of the thesis, is mainly responsible for the improvement and modification of the language of the thesis. MZ, co-author of the paper, is mainly responsible for the review and correction of the content of the paper. All authors read and approved the final manuscript.

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Correspondence to Zhuo Wang.

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Cite this article

Wang, Z., Sun, Y., Yang, R. et al. Frequency splitting characteristics analysis of capacitive wireless power transfer. Electr Eng 105, 1299–1305 (2023). https://doi.org/10.1007/s00202-023-01732-7

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  • DOI: https://doi.org/10.1007/s00202-023-01732-7

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