CLC number: TN99
On-line Access: 2024-08-27
Received: 2023-10-17
Revision Accepted: 2024-05-08
Crosschecked: 2015-12-08
Cited: 1
Clicked: 7703
Qing-feng Li, Shao-bo Chen, Wei-ming Wang, Hong-wei Hao, Lu-ming Li. Improving the efficiency of magnetic coupling energy transfer by etching fractal patterns in the shielding metals[J]. Frontiers of Information Technology & Electronic Engineering, 2016, 17(1): 74-82.
@article{title="Improving the efficiency of magnetic coupling energy transfer by etching fractal patterns in the shielding metals",
author="Qing-feng Li, Shao-bo Chen, Wei-ming Wang, Hong-wei Hao, Lu-ming Li",
journal="Frontiers of Information Technology & Electronic Engineering",
volume="17",
number="1",
pages="74-82",
year="2016",
publisher="Zhejiang University Press & Springer",
doi="10.1631/FITEE.1500114"
}
%0 Journal Article
%T Improving the efficiency of magnetic coupling energy transfer by etching fractal patterns in the shielding metals
%A Qing-feng Li
%A Shao-bo Chen
%A Wei-ming Wang
%A Hong-wei Hao
%A Lu-ming Li
%J Frontiers of Information Technology & Electronic Engineering
%V 17
%N 1
%P 74-82
%@ 2095-9184
%D 2016
%I Zhejiang University Press & Springer
%DOI 10.1631/FITEE.1500114
TY - JOUR
T1 - Improving the efficiency of magnetic coupling energy transfer by etching fractal patterns in the shielding metals
A1 - Qing-feng Li
A1 - Shao-bo Chen
A1 - Wei-ming Wang
A1 - Hong-wei Hao
A1 - Lu-ming Li
J0 - Frontiers of Information Technology & Electronic Engineering
VL - 17
IS - 1
SP - 74
EP - 82
%@ 2095-9184
Y1 - 2016
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/FITEE.1500114
Abstract: Thin metal sheets are often located in the coupling paths of magnetic coupling energy transfer (MCET) systems. eddy currents in the metals reduce the energy transfer efficiency and can even present safety risks. This paper describes the use of etched fractal patterns in the metals to suppress the eddy currents and improve the efficiency. Simulation and experimental results show that this approach is very effective. The fractal patterns should satisfy three features, namely, breaking the metal edge, etching in the high-intensity magnetic field region, and etching through the metal in the thickness direction. Different fractal patterns lead to different results. By altering the eddy current distribution, the fractal pattern slots reduce the eddy current losses when the metals show resistance effects and suppress the induced magnetic field in the metals when the metals show inductance effects. fractal pattern slots in multilayer high conductivity metals (e.g., Cu) reduce the induced magnetic field intensity significantly. Furthermore, transfer power, transfer efficiency, receiving efficiency, and eddy current losses all increase with the increase of the number of etched layers. These results can benefit MCET by efficient energy transfer and safe use in metal shielded equipment.
The paper investigated fractal patterns for eddy current suppression and efficiency improvement. Both of simulations and experiments are detailing presented. It is a high quality paper overall.
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