Constant-current/Constant-voltage Output Method for Wireless Power Transfer System Based on Multi-relay Coil Structure

被引：0
|
作者：
Chen Y. [1 ]
Li Y. [1 ]
Yang B. [1 ]
Chen Y. [1 ]
Mai R. [1 ]
机构：
[1] School of Electrical Engineering, Southwest Jiaotong University, Chengdu
来源：
Dianli Xitong Zidonghua/Automation of Electric Power Systems | 2022年 / 46卷 / 20期
基金：
中国国家自然科学基金;
关键词：
constant current; constant voltage; multi-relay coil; online monitoring equipment; switching frequency; wireless charging; wireless power transfer; zero phase angle;
D O I：
10.7500/AEPS20211205001
中图分类号：
学科分类号：
摘要：
In the battery charging process of online monitoring equipment on the high-voltage tower, in order to take into account the charging speed and safety, the constant-current (CC)/constant-voltage (CV) charging mode is often used. For the wireless power transfer (WPT) system based on the muti-relay coils, this paper proposes a method for realizing CC/CV output by switching the operating frequency of the system only once. The proposed method does not require complicated control and additional components. First, the quantitative relationship between CC/CV output and the system matrix is analyzed. Then, the iterative algorithm is used to determine the value of each compensation parameter, so that the system can achieve CC or CV output at two different frequency points, respectively. Finally, the CC mode can be switched to the CV mode by altering the system frequency. The experimental results demonstrate that the current gain and the voltage gain change only slightly when the load changes over a wide range, and there is almost no reactive power during the whole charging process. © 2022 Automation of Electric Power Systems Press. All rights reserved.
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收藏
页码：147 / 154
页数：7
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