Analysis and Design of Three-Coil Coupler for Inductive Power Transfer System With Automatic Seamless CC-to-CV Charging Capability

被引:8
作者
Xu, Hai [1 ]
Huang, Zhenwei [1 ]
Yang, Yang [1 ]
Huang, Zhicong [1 ]
Iam, Io-Wa [2 ,3 ]
Lam, Chi-Seng [2 ,3 ]
机构
[1] South China Univ Technol, Shien Ming Wu Sch Intelligent Engn, Guangzhou 511442, Peoples R China
[2] Univ Macau, Inst Microelect, State Key Lab Analog & Mixed Signal VLSI, Macau 999078, Peoples R China
[3] Univ Macau, Fac Sci & Technol, Dept Elect & Comp Engn, Macau 999078, Peoples R China
来源
IEEE ACCESS | 2022年 / 10卷
关键词
Coils; Receivers; Batteries; Couplers; Transmitters; Optimization; Rectifiers; Three-coil coupler; inductive power transfer; battery charging; optimal load matching; compact design; TRANSFER CONVERTER; HIGH-EFFICIENCY;
D O I
10.1109/ACCESS.2022.3145685
中图分类号
TP [自动化技术、计算机技术];
学科分类号
0812 ;
摘要
The three-coil loosely coupled inductive power transfer (IPT) charging system can achieve constant current (CC) to constant voltage (CV) output automatically and smoothly during battery charging process. However, due to cross-coupling that existed between the assistive and receiver coils, a voltage deviation will generate in CV output compared with the ideal CV charging voltage threshold of battery. In this paper, the practical effect of the cross-coupling between the assistive and receiver coils and the impedance matching at full load for efficiency optimization are further taken into consideration based on three-coil coupler design. Four design schemes of the assistive coil are compared by finite-element analysis (FEA) and an effective design approach is provided. Then, the proposed approach is theoretically analyzed to relieve the cross-coupling issue on the CV output even with efficiency optimization. Also, it decreases the space occupancy of the three-coil coupler. Finally, an experimental prototype is built to verify the proposed design method and the theoretical analysis.
引用
收藏
页码:10139 / 10148
页数:10
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