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Electrical Engineering

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17-01-2023 | Original Paper

Frequency splitting characteristics analysis of capacitive wireless power transfer

Authors: Zhuo Wang, Yanzhou Sun, Rui Yang, Mengfei Zhang

Published in: Electrical Engineering | Issue 2/2023

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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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Title: Frequency splitting characteristics analysis of capacitive wireless power transfer
Authors: Zhuo Wang
Yanzhou Sun
Rui Yang
Mengfei Zhang
Publication date: 17-01-2023
Publisher: Springer Berlin Heidelberg
Published in: Electrical Engineering / Issue 2/2023
Print ISSN: 0948-7921
Electronic ISSN: 1432-0487
DOI: https://doi.org/10.1007/s00202-023-01732-7

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