Magnetic shielding structure optimization design for wireless power transmission coil

Abstract

In order to improve the performance of the wireless power transmission (WPT) system, a novel design scheme with magnetic shielding structure on the WPT coil is presented in this paper. This new type of shielding structure has great advantages on magnetic flux leakage reduction and magnetic field concentration. On the basis of theoretical calculation of coil magnetic flux linkage and characteristic analysis as well as practical application feasibility consideration, a complete magnetic shielding structure was designed and the whole design procedure was represented in detail. The simulation results show that the coil with the designed shielding structure has the maximum energy transmission efficiency. Compared with the traditional shielding structure, the weight of the new design is significantly decreased by about 41%. Finally, according to the designed shielding structure, the corresponding experiment platform is built to verify the correctness and superiority of the proposed scheme.

Novel sustainable magnetic material to improve the wireless charging of a lightweight drone

“…For this reason, a large amount of research is focused on optimizing the amount of material included in the structure to achieve a decrease in weight. 13 Nevertheless, to avoid laborious optimization calculations during the system design phase, other lighter magnetic materials can be used. The work in ref.…”

Matrix Metamaterial Shielding Design for Wireless Power Transfer to Control the Magnetic Field

“…Especially, the power required by the WPT system in EVs can reach tens of kilowatts, which in turn generates a strong magnetic field [ 10 ]. With an increase in the system transfer power, concerns about human safety need to be considered when charging EV batteries [ 11 , 12 , 13 ]. In addition, the International Commission on Non-Ionizing Radiation Protection (ICNIRP) makes international guidelines to protect the human body from magnetic field exposure [ 14 , 15 ].…”

Performance Analysis of Different Shielding Material for A 100W Wireless Power Transfer System

“…On the other hand, researcher focuses more on the external materials, such as shielding material. The first aspect has been studied by many researchers, and it is a bit challenging to improve WPT performance further [7]. However, the types of material used is not always effective for improving performance efficiency of the system, and some of the materials are better to be used in this type of application than others.…”