Optimal Design of 6.78 MHz Wireless Power Transfer System for Robot Arm
Optimal Design of 6.78 MHz Wireless Power Transfer System for Robot Arm
复制标题
机械臂 6.78 MHz 无线电力传输系统的优化设计
DOI：
10.1109/iscas51556.2021.9401073
复制
发表时间：
2021
期刊：
影响因子：
--
通讯作者：
Sekiya Hiroo
中科院分区：
文献类型：
--
作者：
Tokano Katsuki;Zhu Wenqi;Osato Tatsuki;Nguyen Kien;Sekiya Hiroo
本文提出了一种用于机器人手臂应用的两跳无线功率传输（WPT）系统。建议的WPT系统由E类逆变器的发送端和D类整流器的接收端。我们得到的分析模型的WPT系统获得E类ZVS/ZDS条件。该模型包含了线圈的详细物理信息，即线圈直径、高度、线厚、匝数等，因此，可以在机器人臂线圈空间限制下，对WPT系统进行优化，以获得理论上最高的功率传输效率。电路实验结果与理论预测定量吻合，证明了该设计方法的有效性。实验原型在6.78 MHz工作频率和39.3 W输出功率下实现了78.0%的功率传输效率。
This paper presents a 2-hop wireless power transfer (WPT) system for the robot-arm application. The proposed WPT system consists of the class-E inverter on the transmitter side and a class-D rectifier on the receiver side. We obtain the analytical model of the WPT system for obtaining the class-E ZVS/ZDS conditions. The model includes the detailed physical information of the coil, namely coil diameter, height, wire thickness, winding turn number, and so on. Therefore, it is possible to optimize the WPT system for the theoretical highest power-delivery efficiency under the robot-arm coil-space restriction. The circuit experiment showed quantitative agreements with the theoretical predictions, which proved the validity of the proposed design method. The experimental prototype achieved 78.0 % power-delivery efficiency at 6.78 MHz operating frequency and 39.3 W output power.