Megahertz Multiple-Receiver Wireless Power Transfer Systems With Power Flow Management and Maximum Efficiency Point Tracking

被引：69
作者：
Fu, Minfan [1 ]
Yin, He [2 ]
Ma, Chengbin [2 ]
机构：
[1] Virginia Polytech Inst & State Univ, Ctr Power Elect Syst, Blacksburg, VA 24061 USA
[2] Shanghai Jiao Tong Univ, Univ Michigan Shanghai Jiao Tong Univ Joint Inst, Shanghai 200240, Peoples R China
来源：
IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES | 2017年 / 65卷 / 11期
关键词：
Analysis and design; maximum efficiency point tracking (MEPT); multiple receivers (RXs); time-division multiplexing (TDM); wireless power transfer (WPT); TRANSMISSION;
D O I：
10.1109/TMTT.2017.2689747
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：
This paper presents systematic analysis and design of a megahertz multiple-receiver (RX) wireless power transfer (WPT) system driven by a Class E power amplifier. Both circuit-level and system-level analyses are conducted to discuss the characteristics of the WPT system. In order to simultaneously manage the power flow and maximize the overall system efficiency, a new control scheme is proposed that combines maximum efficiency point tracking and time-division multiplexing. Through the proposed scheme, RXs with different loading and coupling conditions can be charged by the same transmitter with simplified design and control strategy. Finally, the proposed control scheme is validated using an example 6.78-MHz three-RX WPT system. The experimental results show that various power requirements can be quickly and stably satisfied, and the overall average system efficiency can reach as high as 71.7%.
引用
收藏
页码：4285 / 4293
页数：9
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