Paper Info
Title
Finite element method and coupled mode theory coupling for accurate analysis of frequency splitting in wireless power transmission.
Abstract
Wireless power transmission technology avoids the problem of towed wires in the process of using electric energy, and increases the flexibility of using electricity. It is a hot research topic at present. In order to improve the system performance, a field-circuit coupling algorithm is proposed to analyze the system performance, with the help of the concept of supercomputing. Frequency splitting is a phenomenon in wireless power transfer (WPT) system when the coupling distance is less than the splitting point, the load power changes from a single-peak curve to a double-peak curve driven by two non-intrinsic resonant frequencies. Asymptotic coupled mode theory (CMT) method is used to analyse the frequency splitting phenomena in WPT system. It provides detailed information about interaction of field strength under different coupling states through coupled solution of FEM and CMT. Over coupling, critical coupling and under coupling are three typical states classified by frequency splitting. Experimental results are acquired by two helical resonators. The overall system reaches the critical coupling state when resonators space 1.5m and the total power on the load is 110W. Therefore, it is an efficient way to forecast transmission characteristics by using this method.
Year
DOI
Venue
2020
10.3233/JIFS-179420
JOURNAL OF INTELLIGENT & FUZZY SYSTEMS
Keywords
DocType
Volume
magnetic resonant coupling,frequency splitting,coupled mode theory,critical coupling,coupled solution
Journal
38
Issue
ISSN
Citations 
1.0
1064-1246
0
PageRank 
References 
Authors
0.34
0
9
Name
Order
Citations
PageRank
Xian Zhang100.34
Fengxian Wang200.34
Dawen Han300.34
Hao Meng400.34
Bin Wei500.34
Songcen Wang600.34
Yang Li700.34
Ming Xue800.34
Qingxin Yang942.84