Constant Output-Voltage Design for Bi-Directional Wireless Power Transfer System with Multiple Stages

Jinde Wu, Zhihui Wang and Xin Dai
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Jinde Wu: College of Automation, Chongqing University, Chongqing 400044, China
Zhihui Wang: College of Automation, Chongqing University, Chongqing 400044, China
Xin Dai: College of Automation, Chongqing University, Chongqing 400044, China

Energies, 2020, vol. 13, issue 14, 1-14

Abstract: For the application of wireless power transfer (WPT) technology in a robot (like the snake robot), the power is supposed to be transferred to each device across multiple robot joints. This paper proposes a multi-stage bi-directional WPT (MB-WPT) system that not only provides power to multiple loads but also increases the power transfer distance. Besides, the last stage can charge for the preceding stages by reverse power transfer. The constant output voltage can be achieved whether the power is transmitted in a forward or reverse direction, and different output voltages for each stage can be achieved to satisfy the respective voltage requirement through the parameter design method. The validity of the theoretical analysis and the feasibility of the system are verified by experiments.

Keywords: wireless power transfer; multiple stages; bi-direction; constant output voltage (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
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