Lateral and angular misalignments of coil in wireless power transfer system

被引：6

作者：

Wang, Xin ^{[1
,2
]}

Pang, Junqi ^{[1
,2
]}

Zhao, Nan ^{[1
,2
]}

Liu, Longfei ^{[3
]}

Dong, Helei ^{[1
,2
]}

Tan, Qiulin ^{[1
,2
]}

Xiong, Jijun ^{[1
,2
]}

机构：

[1] North Univ China, Sci & Technol Elect Test & Measurement Lab, Taiyuan 030051, Peoples R China

[2] North Univ China, Key Lab Instrumentat Sci & Dynam Measurement, Minist Educ, Taiyuan 030051, Peoples R China

[3] China Aerosp Sci & Technol Corp, Inst 16, Acad 9, Xian 710100, Peoples R China

来源：

SENSORS AND ACTUATORS A-PHYSICAL | 2022年 / 341卷

基金：

中国国家自然科学基金;

关键词：

Wireless power transfer; Magnetic shielding; Lateral misalignment; Angular misalignment; Coil; DESIGN;

D O I：

10.1016/j.sna.2022.113577

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Wireless power transfer requires the transmission and reception of energy through coils arranged coaxially and the direction does not change to ensure maximum transmission efficiency and power. However, in actual working environments, coils have lateral and angular misalignments, thereby reducing the transmission performance. In this study, we investigate the transmission efficiency of coils and the mutual inductance of the lateral and angular misalignments theoretically. Coils with lateral and angular misalignments are modeled with the Maxwell simulation software. Finally, a 3D test experimental platform is built. The experimental results show that the use of a magnetic isolation material on the coil can effectively improve the electromagnetic field intensity of the system. The coupling coefficient of the two coils is increased by more than 15%. At a coupling distance of 5 mm, the coupling mechanism with ferrite is approximately 10% more efficient than that without ferrite. Furthermore, it shows that when the misalignment is large, the magnetic isolation material can significantly improve the efficiency of the wireless charging system.

引用

页数：11

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