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新型E类功放谐振式无线电能传输系统

发表时间:2017-01-23  浏览量:1203  下载量:312
全部作者: 唐治德,杨帆,彭一灵,徐阳阳
作者单位: 重庆大学电气工程学院;国网四川省泸州供电公司;国网河南省电力公司检修公司
摘 要: 由于谐振式无线电能传输(wireless power transfer,WPT)系统的整体性能受功率源约束,研究提出以最佳频率为参数,通过综合分析选择E类功放作为功率源。因元件参数误差,E类功放作为谐振式WPT系统的驱动源时,其输出滤波器与WPT系统难以同频谐振,这导致整个传输系统的效率降低。利用谐振式WPT子系统作为E类功放的谐振滤波,构成E类功放谐振式WPT融合系统,不仅简化了电路,还提高了整个系统的效率。对融合系统进行理论分析,导出了主要参量和系统效率的计算公式,给出了融合系统各部分的参数计算公式,设计、制作并测试了原型系统。其整体系统效率达到63%,传输功率达到3 W,传输距离为0.14 m,工作频率1.5 MHz,研究为小型化系统的完整设计提供了有益参考。
关 键 词: 电气工程;最佳频率;E类功率放大器;无线电能传输;融合系统;传输效率
Title: New class-E amplifier and resonant wireless power transfer system
Author: TANG Zhide, YANG Fan, PENG Yiling, XU Yangyang
Organization: School of Electrical Engineering, Chongqing University; State Grid Sichuan Luzhou Power Supply Company; State Grid Henan Electric Power Company Maintenance Company
Abstract: Considering the overall system performance of resonant wireless power transfer (WPT) system is bound by the power source, the optimum frequency is proposed as the parameter, and class-E amplifier is selected as the power source of WPT system after comprehensive analysis. Because of parametric errors of elements, the outlet filter of class-E power amplifier and the deriver of resonant WPT system can hardly resonate at the same frequency, which causes the reduction of efficiency of the whole transferring system. The subsystem of resonant WPT system is applied as the filter of class-E power amplifier, which constitutes the class-E power amplifier and WPT fusion system. The new system is characterized by the simplification of circuit and the rise of system efficiency. The fusion system is analyzed theoretically, the main parameters and the computational formulas of system efficiency are deduced, and the computational formulas of parameters of various parts of fusion system are also demonstrated. Besides, the prototype system is designed, made and finally tested. The efficiency of the whole system is 63%, and the transfer power is 3 W at the distance of 0.14 m, and the frequency is 1.5 MHz. Thus it provides a reference for the complete design of miniaturized system.
Key words: electrical engineering; optimum frequency; class-E power amplifier; wireless power transfer; fusion system; transfer efficiency
发表期数: 2017年1月第2期
引用格式: 唐治德,杨帆,彭一灵,等. 新型E类功放谐振式无线电能传输系统[J]. 中国科技论文在线精品论文,2017,10(2):158-166.
 
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