Multi-Frequency Multi-Power One-to-Many Wireless Power Transfer System

被引:70
作者
Liu, Wei [1 ]
Chau, K. T. [1 ]
Lee, Christopher H. T. [1 ,2 ]
Jiang, Chaoqiang [1 ]
Han, Wei [1 ]
Lam, W. H. [1 ]
机构
[1] Univ Hong Kong, Dept Elect & Elect Engn, Hong Kong, Peoples R China
[2] MIT, Elect Res Lab, Cambridge, MA 02139 USA
关键词
Multi-frequency multi-power (MFMP); one to many; single transmitter; wireless power transfer (WPT); EFFICIENCY;
D O I
10.1109/TMAG.2019.2896468
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 proposes and implements a novel multi-frequency multi-power wireless power transfer (MFMP-WPT) system based on one single transmitter for simultaneously and compatibly energizing multi-standard receivers. Generally, implementing a multi-frequency WPT often requires a compromise in system complexity, control difficulty, switching frequency, or transmission efficiency. By using only a single transmitter with an artful inverter topology, the proposed MFMP-WPT system can effectively achieve multi-frequency multi-magnitude superposition and switching frequency reduction while maintaining the control fitness and convenience of square-wave generation with 50% duty cycle. Moreover, by switching at the fundamental frequency in a range of 80130 kHz, the single transmitter becomes competent for one-to-many MFMP-WPT operation for diverse wireless power on-demands. Consequently, the fundamental and high-order harmonic wireless energies with multiple power levels can be, respectively, picked up by the multi-standard receivers, depending on their energy requirements. The experimental transmission and system efficiencies can reach 81.57% and 64.74% under MFMP-WPT, respectively. Theoretical analysis, computer simulation, and experimental results are provided to verify the feasibility of the proposed MFMP-WPT system.
引用
收藏
页数:9
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