2020年9月电工技术学报Vol.35  No. 18 第35卷第18期TRANSACTIONS OF CHINA ELECTROTECHNICAL SOCIETY Sep.    2020
DOI: 10.19595/s.191051
一种具有恒流恒压输出自切换特性的
电动汽车无线电能传输系统拓扑
吴丽君1李冠西2张朱浩伯2马皓2
（1. 浙江商业职业技术学院杭州  310053  2. 浙江大学电气工程学院杭州  310027）
摘要电动汽车的无线电能传输系统具有安全可靠、便捷等优点。该文根据电动汽车车载锂电池的充电特性，通过对松散耦合变压器及补偿电路特性的研究，提出一种由一次侧串联二次侧
串联（PS-SS）补偿拓扑和一次侧串联二次侧LCL（PS-SLCL）补偿拓扑所组成的无线电能传输
电路拓扑。该拓扑随着锂电池负载的变化，其充电模式从恒流模式自动切换到恒压模式，同时在
整个充电过程中可以实现逆变器的软开关。该文基于此新型补偿拓扑的输出特性及工作模式，在
理论分析的基础上对拓扑参数和变压器模型进行设计。通过构建仿真模型，验证了电路拓扑的恒
流与恒压输出特性。最后搭建了一套功率为1kW的样机，通过实验验证了该拓扑的可行性。
关键词：电动汽车无线充电恒流恒压输出自切换
中图分类号：TM910.6; U469.72
A Wireless Power Transfer System Topology with Automatic Switching
Characteristics of Constant Current and Constant Voltage Output for
Electric Vehicle Charging
Wu Lijun1  Li Guanxi2  Zhang Zhuhaobo2Ma Hao2
（1. Zhejiang Business College  Hangzhou  310053  China
2. College of Electrical Engineering  Zhejiang University  Hangzhou  310027  China）
Abstract  Wireless power transfer system has the advantages of safety, reliability and convenience for
electric vehicle charging. According to charging characteristics of lithium batteries used in electric vehicles and previous research on the loosely coupled transformer and compensation topologies, a wireless power transfer system design consisting of PS-SS and PS-SLCL compensation topologies is proposed in this paper. The charging mode of the system automatically changes from the CC mode to the CV mode with the change of the load impedance. Soft switching characteristics of the primary inverter can be obtained in the whole charging process. Topology parameters and transformer model dimensions are designed in terms of theoretical analysis on the system characteristics.
Simulation results verify the constant current and constant voltage outputs of the system, and a 1kW experimental platform is built to verify the effectiveness of the proposed design.
杭州电动汽车租赁Keywords：Electric vehicle, wireless power transfer, constant current and constant voltage output, automatic switching
浙江省基础公益研究计划（LGG18E070003）、国家自然科学基金（51577171）和浙江省教育厅（Y201534452）项目资助。
收稿日期 2019-08-16  改稿日期 2019-11-13