ワイヤフリーロボット実現に向けた負荷非依存多出力WPTシステム
小西晃央，小野寺健，小宮山裕太郎，グエンキエン，関屋大雄
2023年電気学会電子・情報・システム部門大会, GS5-7, pp.1318-1323, Sept., 2023. [pdf document]

<Abstract>

This paper presents a load independent wireless power transfer (WPT) system for the multi-receivers such as various power rating motors in a robot arm. The proposed WPT system consists of the single load-independent class-E inverter with LCC filters and multi-receivers with the class-D rectifier and the series resonant tank. In this system, the output power can be individually designed according to the circuit parameter of the LCC filter, so it is possible to use the common receiving coil in all receivers. Therefore, this system achieves the ZVS and the constant output voltage at wide range load variations using the load-independent class-E inverter with the LCC filter. The circuit experiment proved the validity of the proposed designed system. The experimental prototype achieved 86 % power-delivery efficiency at 6.78 MHz operating frequency and 22 V / 24.5 V output voltage.