ロボットアームの実装に向けた負荷非依存マルチホップWPTシステムの設計
戸叶克輝,朱聞起,グエンキエン,関屋大雄
電気学会半導体電力変換研究会 (SPC) SPC-21-100, pp.32-37, July, 2021. [pdf document]

<Abstract>

This paper presents a load independent two-hop wireless power transfer (WPT) system for the robot-arm application. During the motion of the robot arm, the resistance of the motor changes. To achieve stable operation, it is necessary to design the robot arm so that it does not depend on the variation of the resistance value. The proposed WPT system consists of the load independent class-E inverter on the transmitter side and the class-D rectifier on the receiver side. This system achieves the ZVS and the constant output voltage at any load resistances. The circuit experiment proved the validity of the proposed design method. The experimental prototype achieved 83.2 % power-delivery efficiency at 6.78 MHz operating frequency and 23.5 V output voltage.