Freedom spatial wireless power transmission using quasi-static resonant cavity

被引：0
|
作者：
Chen X.-Y. [1 ]
Han S.-P. [1 ]
Qi C. [1 ]
Wang Y. [2 ]
Zhou S.-C. [3 ]
机构：
[1] School of Electrical Engineering, Dalian University of Technology, Dalian
[2] School of Physics, Dalian University of Technology, Dalian
[3] Shanghai Nuclear Engineering Research and Design Institute Co., Ltd., Shanghai
来源：
Dianji yu Kongzhi Xuebao/Electric Machines and Control | 2023年 / 27卷 / 03期
关键词：
dynamic wireless charging; moving device; power loss; quasi-static cavity resonator; revolution; wireless power transfer(WPT);
D O I：
10.15938/j.emc.2023.03.007
中图分类号：
学科分类号：
摘要：
In order to make efficient use of moving working equipment and randomly-placed equipment, thereby improving people’s life quality and production efficiency, people are hoping to provide power to these equipment wirelessly, rather than relying on wires to connect to a power source or stop working to charge. The principle of quasi-static resonant cavity was used to preliminarily study the technology of wirelessly powering stationary or moving working equipment in a specific three-dimensional space. According to the quasi-static resonant cavity structure and electromagnetic field distribution, the intuitive approximate expressions of the various coordinate components of the quasi-static resonant cavity electromagnetic field were given. On this basis, the induced electromotive force of the receiving coil, the power loss of the cavity, and the general expression of the transmission efficiency were analyzed. A cubic quasi-static resonant cavity with a size of 2. 08 × 2. 08 × 1. 12 m3 and a pair of electrode was fabricated, and experimental research on transmission power and transmission efficiency and simulation research under the same conditions were carried out for the rotation and revolution of the receiving coil. It realizes the function of wireless charging for mobile phones in the hand-held and moving state. © 2023 Editorial Department of Electric Machines and Control. All rights reserved.
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页码：69 / 78
页数：9
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