期刊
IEEE TRANSACTIONS ON POWER ELECTRONICS
卷 33, 期 2, 页码 964-969出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TPEL.2017.2735365
关键词
Capacitive power transfer; earth ground; low-voltage stress; two plates; vehicle chassis
资金
- US Department of Energy Graduate Automotive Technology Education Grant
- San Diego State University
This letter proposes a two-plate capacitive wireless power transfer (CPT) system for electric vehicle charging applications. The vehicle chassis and the earth ground are used to transfer power, which can replace two plates in a conventional four-plate CPT system. Therefore, only two external plates are required in the proposed CPT system. The coupling capacitance between the plates allows the current to flow forward to the vehicle side, and the stray capacitance between the chassis and the earth ground provides the current-returning path. After analyzing the working principle of a CPT system, it shows that the voltage on the vehicle chassis can be reduced through switching frequency, the coupler structure design, and the compensation circuit design. Then, a downsized prototype is implemented to validate the proposed system, in which two inductors are used to compensate the capacitive coupler. Experimental results show that the prototype achieves 350-W power transfer with 74.1% dc-dc efficiency over an air-gap distance of 110 mm, and the RMS voltage on vehicle chassis is limited to 132 V.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据