Comparison of Passive Shields for Coils in Inductive Power Transfer

被引：0

作者：

Lu, Ming ^{[1
]}

Ngo, Khai D. T. ^{[1
]}

机构：

[1] Virginia Polytech Inst & State Univ, Bradley Dept Elect & Comp Engn, Ctr Power Elect Syst, Blacksburg, VA 24061 USA

来源：

2017 THIRTY SECOND ANNUAL IEEE APPLIED POWER ELECTRONICS CONFERENCE AND EXPOSITION (APEC) | 2017年

关键词：

Inductive Power Transfer; Shield; Coils Design; Efficiency; Magnetic Field; OPTIMIZATION; EFFICIENCY;

D O I：

暂无

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

Efficiency and stray magnetic field are two important factors for coils design in inductive power transfer. By adding passive shields to the coils, stray magnetic field is significantly attenuated. However, coils' efficiency is reduced due to losses of the shields. Both efficiency and stray magnetic field should be considered for fair comparison of shields' performances. Four kinds of passive shields for coils in inductive power transfer are analyzed, including plate shield, ring shield, litz shield, and reverse loops. Their performances are compared using Pareto fronts of efficiency versus stray magnetic. The fronts show that coils with litz shield generate smallest stray magnetic field when the four shields are designed for the same efficiency. The stray magnetic field was attenuated by 75% in an experimental 100 W inductive power transfer system using litz shield.

引用

页码：1419 / 1424

页数：6

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