张伟峰,金正军,宋书轩,葛佳蔚
ZHANG Weifeng,JIN Zhengjun,SONG Shuxuan,GE Jiawei

• 1:国网浙江省电力有限公司杭州供电公司
• 2:华北电力大学

摘要(Abstract)：

电动汽车无线充电过程中,LCT(磁耦合器)原副边线圈错位会导致无线传输系统功率和效率显著降低。为了提升WPTS(无线充电系统)的抗偏移能力,对比了常见的两线圈和三线圈结构LCT的抗偏移特性,揭示了带中继线圈的三线圈LCT具有较好抗偏移能力;并在原副边线圈位置固定的前提下,提出基于最优耦合系数区间的中继线圈最佳位置确定方法;最后,研制了一台3 kW带中继线圈的WPTS样机并进行实验验证,结果表明在横向偏移150 mm、纵向偏移50 mm情况下,采用最优耦合系数区间的WPTS在满足输出功率前提下效率仍大于90%。文中成果可为研制具有较强抗偏移能力的商用WPTS提供重要理论支撑。
In the process of electric vehicle wireless charging, the primary and secondary coil dislocation of magnetic coupler may cause significant reduction of power and efficiency of wireless transmission system. In order to improve the misalignment tolerance ability of WPTS(wireless power transfer system), misalignment tolerances of two-coil and three-coil loosely coupled transformer(LCT) are compared, which reveals that three-coil LCT with intermediate coil has better misalignment tolerance ability; secondly, under the condition of fixed position of primary and secondary coils, the determining method for optimal position of intermediate coil based on the optimal range of coupling coefficient is proposed; finally, a 3 kW WPT prototype with intermediate coil is developed and manufactured, and experimental validation is also performed. The results show that the efficiency of the wireless charging system with the optimal coupling coefficient range is still more than 90% when the lateral offset is 150 mm and the longitudinal offset is 50 mm respectively. The achievement in this paper can provide important theoretical support for the development of commercial WPTS with better misalignment tolerance ability.

关键词(KeyWords)： 无线充电;磁耦合器;最优耦合系数区间;抗偏移能力
wireless power transfer(WPT);loosely coupled transformer(LCT);optimal range of coupling coefficient;misalignment tolerance

Abstract:

Keywords:

基金项目(Foundation): 国网浙江省电力有限公司杭州供电公司科技项目（5211HZ1800UM）

作者(Author): 张伟峰,金正军,宋书轩,葛佳蔚
ZHANG Weifeng,JIN Zhengjun,SONG Shuxuan,GE Jiawei

DOI: 10.19585/j.zjdl.202011013

参考文献(References)：

• [1]王林梅，刘瑞，蒋佐富，等.电动汽车无线充电系统电磁场计算方法[J].浙江电力，2018,37(12):19-25.
• [2]吴志力.电动汽车充电技术应用现状与发展趋势[J].浙江电力，2012,31(8):6-9.
• [3]谢宝江，陈桑红，陈轶玮，等.基于CPT的电动汽车无线充电技术研究[J].浙江电力，2018,37(7):26-30.
• [4]曹玲玲，陈乾宏，任小永，等.电动汽车高效率无线充电技术的研究进展[J].电工技术学报，2012,27(8):1-13.
• [5]ZHANG Z,PANG H L,GEORGIADIS A,et al.Wireless power transfer:an overview[J].IEEE Transactions on Industrial Electronics,2019,66(2):1044-1058.
• [6]张黎，方胜伟，李要东，等.新型三线圈磁耦合谐振式无线电能传输系统及其优化[J].高电压技术，2019,45(4):1146-1152.
• [7]黄学良，王维，谭林林.磁耦合谐振式无线电能传输技术研究动态与应用展望[J].电力系统自动化，2017,41(2):2-14.
• [8]赵争鸣，刘方，陈凯楠.电动汽车无线充电技术研究综述[J].电工技术学报，2016,31(20):30-40.
• [9]L譫PEZ-ALCOLEA F J,REAL J V D,RONCEROS魣NCHEZ P,et al.Modeling of a magnetic coupler based on single-and double-layered rectangular planar coils with in-plane misalignment for wireless power transfer[J].IEEE Transactions on Power Electronics,2020,35(5):5102-5121.
• [10]赵智忠，陈辉，李艳红，等.谐振式无线电能传输线圈结构优化与实验研究[J].电力电子技术，2018,52(5):48-50.
• [11]BUDHIA M,BOYS J T,COVIC G A,et al.Development of a single-sided flux magnetic coupler for electric vehi cle IPT charging systems[J].IEEE Transactions on Industrial Electronics,2013,60(1):318-328.
• [12]COVIC G A,KISSIN M L G,KACPRZAK D,et al.A bipolar primary pad topology for EV stationary charging and highway power by inductive coupling[C]//2011 IEEE Energy Conversion Congress and Exposition. September 17-22,2011,Phoenix,AZ,USA. IEEE,2011:1832-1838.
• [13]LUO Z C,WEI X Z.Analysis of square and circular planar spiral coils in wireless power transfer system for elec tric vehicles[J].IEEE Transactions on Industrial Electronics,2018,65(1):331-341.
• [14]DENG Q J,LIU J T,CZARKOWSKI D,et al.Frequencydependent resistance of litz-wire square solenoid coils and quality factor optimization for wireless power transfer[J].IEEE Transactions on Industrial Electronics,2016,63(5):2825-2837.
• [15]王懿杰，陆凯兴，姚友素，等.具有强抗偏移性能的电动汽车用无线电能传输系统[J].中国电机工程学报，2019,39(13):3907-3917.
• [16]罗斌，生茂棠，吴仕闯，等.磁谐振耦合式单中继线圈无线功率接力传输系统的建模与分析[J].中国电机工程学报，2013,33(21):170-177.
• [17]王维，黄学良，谭林林，等.磁谐振式无线电能传输系统谐振器参数对传输性能的影响性分析[J].电工技术学报，2015,30(19):1-6.
• [18]宋凯，朱春波，李阳，等.用于电动汽车动态供电的多初级绕组并联无线电能传输技术[J].中国电机工程学报，2015,35(17):4445-4453.