Research on the Multiple Capacitor Current Sharing of High-Current Receiving Coils in a Series-Series Wireless Charging System

被引：0

作者：

Xie, Yuxin ^{[1
]}

Cai, Shengkun ^{[1
]}

Li, Guangye ^{[2
]}

Liu, Zhizhen ^{[1
]}

Zhao, Yuandi ^{[3
]}

Qiao, Gangjie ^{[1
]}

Li, Xianglin ^{[1
]}

机构：

[1] Shandong Univ, Sch Elect Engn, Jingshi Rd 17923, Jinan 250061, Peoples R China

[2] Shandong Jiaotong Univ, Sch Informat Sci & Elect Engn, Jinan 250357, Peoples R China

[3] Jinan EMag Elect Co Ltd, Jingyi Rd 88, Jinan 250061, Peoples R China

来源：

WORLD ELECTRIC VEHICLE JOURNAL | 2024年 / 15卷 / 02期

关键词：

wireless charging; high current; current sharing; capacitance compensation; temperature; INDUCTIVE POWER TRANSFER; DESIGN; OPTIMIZATION;

D O I：

10.3390/wevj15020058

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In order to improve wireless charging power and reduce heating problems, the optimal design of the high-current wireless charging coil has always been the research focus of wireless charging system research. This paper proposes a multi-branch and multi-capacitance current sharing method for series-series (SS) receiving coils. Firstly, the current sharing model with n branches that are connected parallel to multiple compensation capacitors is established. The current sharing situation of parallel coils with three branches and three capacitors with independently resonant compensation is analyzed. Then, the wireless charging system with the parallel coils of 48 V/100 A receiving coils is simulated. The results show that when one capacitor is used for compensation, the three-coil currents highly differ; when three capacitors are compensated independently, the three-coil currents are basically equal. The simulation results show that the current sharing method can effectively improve the charging power of the system and reduce the maximum temperature of the receiving coil, which proves the effectiveness of this method. Finally, through the experimental comparison, it is verified that the current sharing measure can make the current of each wire basically equal.

引用

页数：18

共 31 条

[31]

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