A Three-Coil Constant Output Wireless Power Transfer System Based on Parity–Time Symmetry Theory
Source abstract
Abstract
In a three-coil wireless power transfer system with relay coils, the transmission efficiency and output power of the system decreases with changes in the adjacent coupling coefficients. Controlling the power of three-coil wireless power transfer systems is also a significant challenge. To solve these issues, a three-coil wireless power transfer system based on parity–time symmetry is proposed in this paper. First, a three-coil parity–time wireless power transfer system was modeled based on a circuit model. Then, the transmission and gain characteristics of the three-coil parity–time wireless power transfer system were analyzed. It was found that when the system is in a parity–time-exact region, it can maintain a constant transmission efficiency and output power, and its output power is independent of the coupling coefficient. In addition, based on the output characteristics of the three-coil parity–time wireless power transfer system, a power control method and a working range detection method were proposed to attain a constant power output. Finally, a three-coil parity–time wireless power transfer system was experimentally tested.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Wireless Power Transfer Systems · Energy Harvesting in Wireless Networks · Wireless Body Area Networks
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Electrical and Information Engineering, Beijing University of Civil Engineering and Architecture, Beijing 102616, China
School of Electrical Engineering, Beijing Jiaotong University, Beijing 100044, China
Funding
Beijing Municipal Natural Science Foundation · Fundamental Research Funds for Beijing University of Civil Engineering and Architecture
References (26)
Show source-provided references
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