In recent years, wireless charging technology for electric vehicles caused widespread concern. The importance and difficulty of wireless charging technology for electric vehicles focus on magnetic coupling structure design. The key parameters in that the coupling coefficient, and the performance of the coil after offset. Firstly, a brief analysis of the characteristics of the three basic structure of the magnetic coupling was taken, and then, details of the magnetic coupling structure improvement program research institutions at home and abroad. Finally, the magnetic coupling on structural design considerations and trends were proposed.
[1] Kurs A, Karalis A, Moffatt R, et al. Wireless power transfer via strongly coupled magnetic resonances[J]. Science (New York, N.Y.), 2007, 317(5834): 83-86.
[2] Budhia M, Covic G A, Boys J T. Design and optimisation of magnetic structures for lumped inductive power transfer systems[C]//2009 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION, VOLS 1-6. San Jose, CA, 2009: 2001-2008.
[3] Budhia M, Covic G A, Boys J T. Design and optimization of circular magnetic structures for lumped inductive power transfer systems[J]. IEEE Transactions on Power Electronics, 2011, 26(11): 3096-3108.
[4] Auckland Uniservices Limited. Inductive Power Transfer Apparatus[P]. WO. 2010090539, 2010.
[5] Elliott G A, Raabe S, Covic G A, et al. Multiphase pickups for large lateral tolerance contactless Power- Transfer systems[J]. IEEE Transactions on Industrial Electronics, 2010, 57(5): 1590-1598.
[6] Budhia M, Covic G A, Boys J T, Huang Chang-Yu. Development and evaluation of single sided flux couplers for contactless electric vehicle charging systems[C]//IEEE ECCE, Phoenix, AZ, 2011: 614-621.
[7] Budhia M, Boys J T, Covic G A, et al. Development of a Single-Sided flux magnetic coupler for electric vehicle IPT charging systems[J]. IEEE Transactions on Industrial Electronics, 2013, 60(1): 318-328.
[8] Zaheer A, Kacprzak D, Covic G A. A bipolar receiver pad in a lumped IPT system for electric vehicle charging applications[C]//2012 IEEE Energy Conver- sion Congress and Exposition (ECCE), 2012: 283-290.
[9] Zaheer A, Grant A C, Kacprzak D. A bipolar pad in a 10kHz 300W distributed IPT system for AGV appli- cations[J]. IEEE Trans.on Industrial Electronics, 2014, 61(7): 3288-3301.
[10] Lin Feiyang, Zaheer A, Budhia M, et al. Reducing Leakage Flux in IPT Systems by Modifying Pad Ferrite Structures[C]//IEEE ECCE, Pittsburgh, PA, 2014: 1770-1777.
[11] Lin F Y, Covic G A. Numerical modelling of IPT pad combinations[C]//2015 IEEE Energy Conversion Congress and Exposition (ECCE), 2015: 3103-3110.
[12] Budhia M, Covic G, Boys J. A new IPT magnetic coupler for electric vehicle charging systems[C]// Iecon 2010-36TH Annual Conference on IEEE Industrial Electronics Society, 2010: 2487-2492.
[13] Auckland Uniservices Limited. Inductive Power Transfer Apparatus[P]. WO. 2016007023, 2016.
[14] Choi S Y, Huh J, Woo Y L, et al. Asymmetric coil Sets for wireless stationary EV chargers with large lateral tolerance by dominant field analysis[J]. IEEE Trans.on Power Electronics, 2014, 29(12): 6406-6420.
[15] Moon S C, Kim B C, Cho S Y, et al. Analysis and design of a wireless power transfer system with an intermediate coil for high efficiency[J]. IEEE Transa- ctions on Industrial Electronics, 2014, 61(11): 5861- 5870.
[16] Abhilash K, Grant A C, John T B. Analysis of coplanar intermediate coil structures in inductive power transfer systems[J]. IEEE Trans. on Power Electronics, 2015, 30(11): 6141-6154.
[17] Choi S Y, Gu B W, Lee S W, et al. Generalized active EMF cancel methods for wireless electric vehicles[J]. IEEE Transactions on Power Electronics, 2014, 29(11): 5770-5783.
[18] Park C, Lee S, Jeong S Y, et al. Uniform power I-Type inductive power transfer system with DQ-Power supply rails for On-Line electric vehicles[J]. IEEE Trans.on Power Electronics, 2015, 30(11): 6446-6455.
[19] Toyota Jidosha Kabushiki Kaisha, National University Corporational Nagoya Institute of Technology. Coil Unit, Contactless Power Transfer Apparatus, Vehicle, and Contactless Power Feeding System[P]. US. 9225204, 2015.
[20] Evatran Group INC. System and Method for Inductively Transferring AC Power and Self Alignment between a Vehicle and a Recharging Station[P]. US. 8796990, 2013
[21] 胡超. 电动汽车无线供电电磁耦合机构能效特性及优化方法研究[D]. 重庆: 重庆大学, 2015.
[22] 王智慧, 胡超, 孙跃, 等. 基于输出能效特性的IPT系统磁耦合机构设计[J]. 电工技术学报, 2015, 30(19): 26-31.
[23] Zhang W, Chen Q H, Wong S C, et al. A novel transformer for contactless energy transmission systems[C]//IEEE ECCE, San Jose, CA, 2009: 3218- 3224.
[24] 张巍, 陈乾宏, Wong SC, 等. 新型非接触变压器的磁路模型及其优化[J]. 中国电机工程学报, 2010, 30(27): 108-116.
[25] 陈乾宏, 侯佳. 绕组混合绕制的非接触变压器(P)[Z]. 2013.
[26] Hou J, Chen Q H, Wong S C, et al. A loosely coupled transformer with mixed winding and electromagnetic shielding for contactless power transmission[C]//IEEE PEAC, Shanghai, CN, 2014: 588-593.
[27] 陈为, 黄晓生, 等. 一种无线电能传输磁耦合结构及其电路[P]. 中国, CN201210463307.6, 2012.
2017, Vol. 18 
