Design and Analysis of an Omnidirectional Dual-Band Wireless Power Transfer System
Design and Analysis of an Omnidirectional Dual-Band Wireless Power Transfer System
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DOI：
10.1109/tap.2020.3037713
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发表时间：
2021-06
影响因子：
5.7
通讯作者：
Conghui Lu;Xiutao Huang;X. Tao;Xiaobo Liu;Cancan Rong;Yingqin Zeng;Minghai Liu
中科院分区：
文献类型：
--
作者：
Conghui Lu;Xiutao Huang;X. Tao;Xiaobo Liu;Cancan Rong;Yingqin Zeng;Minghai Liu
无线电力传输系统（WPT）对于智能家居自动化变得越来越重要，其中无线传感器阵列用于监控和管理智能设备和家具。在家中的任何位置对传感器进行充电（这可能需要不同的频率）是一个挑战。本文介绍了一种用于智能家居传感器的双频全向三维WPT系统。由发射器发射的功率可以由位于任何位置的以13.56和27.12 MHz操作的任何接收器接收。设计并演示了双频三维方形和圆形发射机。特别是，所提出的系统的等效电路模型推导和数值分析。此外，通过仿真和测量，基于接收角评估了双波段3-D WPT系统的效率。在16 cm距离处，在13.56和27.12 MHz下旋转360°时，系统可以实现61.6%和65.4%（57.15%和61.2%）的效率，而在方形（圆形）系统中没有零值。此外，还分析了接收机的角度失调对效率的影响。最后，WPT系统在一个具体的结构的性能进行了验证，为实际场景。
The wireless power transfer system (WPT) is becoming increasingly important for smart home automation, in which an array of wireless sensors is used to monitor and manage smart devices and furniture. Charging the sensors, which may require different frequencies, at any position in the home is a challenge. In this article, a dual-band omnidirectional 3-D WPT system is introduced for the sensors in a smart home. The power transmitted by the transmitter can be received by any receivers operating at 13.56 and 27.12 MHz located at any position. The dual-band 3-D square and circular transmitters are designed and demonstrated. In particular, an equivalent circuit model of the proposed system is derived and numerically analyzed. In addition, the efficiency of the dual-band 3-D WPT system is evaluated based on the receiving angle through simulation and measurement. At a 16 cm distance, the system can achieve efficiencies of 61.6% and 65.4% (57.15% and 61.2%) for rotating 360° at 13.56 and 27.12 MHz without a null value in the square (circular) system. Furthermore, the effect of the angular misalignment of the receiver on efficiency is also analyzed. Finally, the performance of the WPT system in a concrete structure is validated for practical scenarios.