3-D Coil Positioning Based on Magnetic Sensing for Wireless EV Charging

被引：75
作者：
Gao, Yabiao [1 ]
Duan, Chen [2 ]
Oliveira, Aleff Antonio [3 ,4 ]
Ginart, Antonio [5 ]
Farley, Kathleen Blair [6 ]
Tse, Zion Tsz Ho [5 ]
机构：
[1] Univ Georgia, Athens, GA 30602 USA
[2] FEV North Amer Inc, Auburn Hills, MI 48326 USA
[3] Univ Georgia, Athens, GA 30602 USA
[4] Univ Brasilia Gama, Gama Engn Coll, BR-7244424 Brasilia, DF, Brazil
[5] Univ Georgia, Athens, GA 30602 USA
[6] Southern Co Serv Inc, Birmingham, AL 35291 USA
来源：
IEEE TRANSACTIONS ON TRANSPORTATION ELECTRIFICATION | 2017年 / 3卷 / 03期
关键词：
Coil positioning; electric vehicles(EVs); vehicle alignment; wireless charging; POWER TRANSFER SYSTEM; ELECTRIC VEHICLES; EFFICIENCY; DESIGN;
D O I：
10.1109/TTE.2017.2696787
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：
Wireless power transfer (WPT) via magnetic resonance coupling is considered a promising outlet for electric vehicle (EV) charging due to the noncontact method. Unlike a traditional transformer, with WPT, the relative spacing and lateral distance between the primary and secondary coils are highly variable, which can affect the wireless power delivery and lower the efficiency. A magnetic positioning approach that shares the wireless charging structure is proposed to solve the misalignment issue associated with wireless EV charging. The proposed alignment sensing system employs multiple auxiliary minor coils on the secondary side to position the charging pad. The positioning principle and equivalent circuit were analyzed. The 108 samples were tested and they were distributed throughout the detection range of 70 cm. The experimental results demonstrate that > 92% of those samples have positioning errors of < 2 cm and 98% of them have positioning errors of < 3 cm.
引用
收藏
页码：578 / 588
页数：11
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