A Multicell SCC Capacitive Coupler With Strong Lateral, Longitudinal, and Rotational Antioffset Performance

作者：Cang Liang, Mingzhe Liu, Feiyang Zhao, Danghui Wang, Xiaohua Wang, Huan Yuan, Aijun Yang, Jifeng Chu, Mingzhe Rong · 发表于：IEEE Transactions on Power Electronics · 年份：2024 · DOI：10.1109/tpel.2024.3508769 · 被引用次数：17 · 研究领域：Wireless Power Transfer Systems、Advanced DC-DC Converters、Energy Harvesting in Wireless Networks

The coupling structure of a capacitive power transfer (CPT) system eliminates the need for ferrite on the secondary side, resulting in a lighter, thinner, and more cost-effective design compared to an inductive power transfer system, while still achieving high power transfer efficiency. This makes CPT a promising option for Uncrewed aerial vehicle applications. However, existing researches cannot achieve efficient power transfer when lateral, longitudinal, and rotational offsets occur. This article proposes a novel multicell single capacitance coupled capacitive coupler with strong lateral, longitudinal, and rotational antioffset performance at any position of the transmitter. The top and bottom plates of the transmitter consist of numerous interconnected rectangular cells. To avoid excessive mutual capacitance on the primary side and to enable effective coupling of the partial capacitance between the bottom plate of the transmitter and the top plate of the receiver, the rectangular cells of the transmitter's bottom and top plates are misaligned. When offset occurs, the top plate of the transmitter and the bottom plate of the receiver can maintain reliable contact, and the number of rectangular cells on the transmitter's bottom plate aligned with the receiver's top plate remains nearly constant, ensuring stable coupling capacitance and high power transfer efficiency, general design guidelines for the dimension of the small rectangular cells and the gap between the plates are ...