An inductively coupled power and data transfer system based on three-coil coupled structure
LANG Zichen
LI Xingfei
XU Jiayi
XIE Ziming
LI Hongyu
Abstract：For the inductively coupled power transfer system used in the mooring buoy,the communica-tion between above water and under water devices is a challenge because of the complex water environ-ment.A novel system,which applies three-coils coupled structure to realize simultaneous power and data transfer,is proposed in this article.First,the overall system modeling was introduced including five electrically isolated circuit parts connecting by two magnetic couplers of three-coils coupled struc-ture,and the proposed coupler structure was illustrated.Second,the power and data transfer functions were deduced for both forward and backward communication,and the performance was analyzed.Third,the feature of the three-coil coupled structure was analyzed in detail and the method to optimize and reduce the crosstalk between power and data was given.Finally,a prototype was conducted to veri-fy the proposed system.The prototype can realize 50W power transfer and 30kb/s data transfer.
Keywords：inductively coupled power and data transferthree-coil coupled structuretransfer function deduction
Publication Date：2025-04-30
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：11( 30-40 )