重庆大学学报2024，Vol.47Issue(6)：94-102,9.DOI:10.11835/j.issn.1000.582X.2024.06.010
基于E类功率放大器的四线圈中距离无线输电系统的优化设计
Optimization design of four-coil mid-range wireless power transfer based on E-class amplifier
摘要
Abstract
The E-class power amplifier presents an ideal solution for high-frequency power supply applications,characterized by its simple topology,high operational frequency,and efficiency. This paper conducts a detailed analysis of the transfer characteristics of a four-coil wireless power transfer(WPT) system and proposes an optimal design method to achieve high transfer efficiency. Additionally,with considering the operating status of the E-class amplifier,perfect matching of input resistance is achieved by adjusting the distance between the driving coil and transmitting coil. A 2.81 MHz four-coil mid-range WPT system employing an E-class amplifier is established. At a transfer distance of 3.6 times the side length of the transfer coil,the overall transfer efficiency from the power source to the load reaches 8.5％.关键词
E类功率放大器/中距离无线输电系统/阻抗匹配/效率优化Key words
E-class power amplifier/mid-range wireless power transfer/impedance matching/efficiency optimization分类
信息技术与安全科学引用本文复制引用
刘羽,余豪华,彭博,苏国栋..基于E类功率放大器的四线圈中距离无线输电系统的优化设计[J].重庆大学学报,2024,47(6):94-102,9.基金项目
国网浙江省电力有限公司科技项目(YYKJ202006).Supported by State Grid Zhejiang Electric Power Co.,Ltd.Technology Project(YYKJ202006). （YYKJ202006）
