具有强抗偏移性的电动汽车无线充电系统设计  

Design of Wireless Charging System for Electric Vehicle With Prominent Anti-offset Performance

作　　者：白戈亮 田宏伟 王宝平 BAI Ge-liang;TIAN Hong-wei;WANG Bao-ping(Guodian Datong Hudong Power Generation Corporation,Datong 037043,China)

机构地区：[1]国电电力大同湖东发电有限公司,山西大同037043

出　　处：《电力电子技术》2022年第3期60-63,共4页Power Electronics

摘　　要：针对无线充电系统中传输线圈容易发生偏移的特性,并为了满足蓄电池先恒流后恒压的充电要求,优化设计了一套具有强抗偏移性的电动汽车无线充电系统方案。首先,基于串串(SS)补偿网络,提出了在发射侧自动识别传输线圈之间的互感值和实时电池状态的方法。在此基础上,采用移相控制策略实现在不同充电位置下仍保持输出额定电流/电压,采用变频控制策略来实现充电模式的切换。最后,搭建了恒流输出10 A,恒压输出300 V的实验样机,实验结果表明在0~200 mm的水平偏移距离内,可以保持额定值进行先恒流后恒压输出。该系统根据两侧电气量之间的耦合关系辨识参数,无需无线通信装置,仅需在发射侧进行控制,主电路拓扑结构简单,运行稳定性高。For the transmission coil is prone to offset in the wireless charging system,and in order to meet the charging requirements of the battery,a set of electric vehicle wireless charging system scheme with prominent anti-offset performance is optimized.Firstly,based on the series-series(SS)compensation network,a method of automatically identifying the mutual inductance between the transmission coils and the real-time battery states is proposed.After that,phase-shift control strategy is used to achieve the rated current/voltage output at different charging positions,and frequency conversion control strategy is used to switch the charging mode.Finally,an experimental prototype with constant current output of 10 A and constant voltage output of 300 V is built.The experimental results show that within the horizontal offset distance of 0~200 mm,the rated value and the characteristic of constant current and then constant voltage output can be maintained.The system does not require wireless communication devices,only controls on the transmitting side.The main circuit topology is simple,and the operation stability is high.

关 键 词：无线充电系统 电动汽车 抗偏移性 

分 类 号：TM910.6[电气工程—电力电子与电力传动]