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http://dx.doi.org/10.5515/KJKIEES.2018.29.11.851

A Study on Characteristics and Equivalent Circuit Model of Underwater Wireless Power Transfer System by Salinity  

Lee, Jeong-Geon (Dept. of Smart ICT Convergence, Konkuk University)
Kang, Wonshil (Emerging Wireless Power Research Center, Konkuk University)
Ku, Hyunchul (Electrical and Electronic Engineering, Konkuk University)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.29, no.11, 2018 , pp. 851-856 More about this Journal
Abstract
In this study, we analyze the characteristics of wireless power transfer(WPT) based on magnetic resonance in an underwater environment and propose an equivalent model suitable for underwater WPT. The proposed underwater WPT equivalent model is constructed by expanding the free-space WPT T-model reflecting characteristics change according to media. Considering the water salinity, we propose a method to extract the parameters of the proposed model based on the S parameters. To verify the proposed model, a 6.78-MHz underwater WPT system was constructed and compared with the predicted power transfer efficiency of the model. As a result, it was confirmed that the proposed model predicts the variation of characteristics with an average error of less than 3 %.
Keywords
Wireless Power Transfer; Underwater; Equivalent Circuit Model; Salinity;
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