基于DDQ/DD耦合机构的强抗偏移电动汽车用无线充电系统  

A DDQ/DD-coupler-based Wireless Power Transfer System for Electric Vehicles Charging Featuring High Misalignment Tolerance

作　　者：庄廷伟 姚友素 袁悦 王懿杰[1] 刘晓胜[1] 徐殿国[1] ZHUANG Tingwei;YAO Yousu;YUAN Yue;WANG Yijie;LIU Xiaosheng;XU Dianguo(School of Electrical Engineering&Automation,Harbin Institute of Technology,Harbin 150001,Heilongjiang Province,China)

机构地区：[1]哈尔滨工业大学电气工程及自动化院,黑龙江省哈尔滨市150001

出　　处：《中国电机工程学报》2022年第15期5675-5684,共10页Proceedings of the CSEE

摘　　要：电动汽车无线充电系统在耦合机构发生偏移后,存在输出电压波动大和效率降低的问题。为此,该文提出基于DDQ/DD耦合机构(原边DDQ、副边DD耦合机构)和双路LCC/S补偿拓扑(原边DD和Q线圈均采用LCC补偿,副边DD线圈采用S补偿)的强抗偏移无线充电系统。为减小补偿元件应力,提高系统抗偏移性能,提出基于电压波动率最小原则的DDQ/DD耦合机构和补偿参数联合优化设计方法。为验证理论分析,搭建输出功率为1kW的实验样机,所用耦合机构原、副边外尺寸分别为550×550mm^(2)、350×350mm^(2),横向偏移150mm过程中,系统输出电压波动率低至7.43%。When the magnetic coupler of the electric vehicle(EV)wireless charging system is misaligned,the output voltage fluctuates significantly and the system efficiency decreases.This paper proposed a wireless power transfer(WPT)system using DDQ/DD coupler(primary DDQ coupler,secondary DD coupler)and double-LCC/S(primary DD and Q coils were compensated by LCC network while secondary DD coil was compensated by S network)compensation topology.The proposed WPT system was characterized with high misalignment tolerance.To reduce the voltage/current stress of the compensation elements and improve the system misalignment tolerance,a co-design method optimizing the DDQ/DD coupler and compensation parameters was proposed following minimum output voltage fluctuation.A WPT prototype that can output 1kW power was built to verify the theoretical analysis.The outer dimensions of the primary and secondary couplers are 550×550mm^(2) and 350×350mm^(2),respectively.WhenΔX increases from 0 to 150mm,the output voltage fluctuation is as low as 7.43%.

关 键 词：无线电能传输 强抗偏移 DDQ/DD耦合机构 LCC/S补偿 电动汽车 

分 类 号：TM46[电气工程—电器]