电容感应
发射机
电容耦合
电气工程
电压
偏移量(计算机科学)
电极
最大功率转移定理
谐振器耦合系数
光电子学
材料科学
声学
工程类
功率(物理)
计算机科学
物理
频道(广播)
量子力学
谐振器
程序设计语言
作者
Huan Yuan,Cang Liang,Renjie Zhang,Zhuoyi Ruan,Zhiqiang Zhou,Aijun Yang,Xiaohua Wang,Mingzhe Rong
出处
期刊:IEEE Transactions on Power Electronics
[Institute of Electrical and Electronics Engineers]
日期:2022-11-08
卷期号:38 (3): 4140-4151
被引量:31
标识
DOI:10.1109/tpel.2022.3220674
摘要
This article proposes a novel antioffset interdigital electrode capacitive wireless power transfer system for mobile desktop applications. The coupler consists of two pairs of series connected interdigital electrodes at transmitter side and two copper plates at receiver side, and a detailed generalized design methodology is provided. To realize antioffset at transverse direction, switch array is adopted at series connected interdigital electrodes side, and coupling coefficient can be kept stable at any misalignment distance. When misalignment occurs, changes of switch array are decided by voltage and current phase angle detection at transmitter side, and the system resonance frequency does not need to be tuned with the changes of misalignment distance. No additional position detection sensors are required, which simplifies the system and reduces the production cost. System energy transfer efficiency can be kept stable between 81.18% and 86.77% at any misalignment distance. When rotational misalignment occurs, the receiver can maintain voltage gain of more than 1.95 with stable 5 W output at −45°∼45° offset. Experimental results at 2.28 MHz show great agreement with theoretical analysis.
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