基于拓扑切换的三线圈恒流恒压无线充电系统研究  

Study on Three-coil CC and CV Wireless Charging System Based on Topology Switching

作　　者：耿直 王萌 王灿 杨林 GENG Zhi;WANG Meng;WANG Can;YANG Lin(College of Electronic and Electrical Engineering,Henan Normal University,Xinxiang 453007,China;College of International Education,Henan Normal University,Xinxiang 453007,China)

机构地区：[1]河南师范大学电子与电气工程学院,新乡453007 [2]河南师范大学国际教育学院,新乡453007

出　　处：《电源学报》2024年第S01期226-235,共10页Journal of Power Supply

基　　金：国家自然科学基金资助项目(52177004,U1904182);河南师范大学博士科研启动资金资助项目(5101239170017)。

摘　　要：与传统的插拔式充电系统相比,无线功率传输WPT(wireless power transfer)系统因具有更加安全、高效、稳定、便捷的特点,受到越来越多的关注。基于此,提出1种基于拓扑切换的三线圈恒流CC(constant current)恒压CV(constant voltage)无线充电系统,实现与负载无关的CC和CV充电输出功能。首先,通过设置2个交流开关实现系统CC与CV模式之间的切换,并且能保证系统在CC和CV模式下均能运行在零相位角ZPA(zero phase angle)状态。然后,将交流开关设置于系统接收侧,则该系统不需要额外的无线通信模块辅助,可在一定程度上减少系统的开发成本并避免无线通信可能受到干扰而造成系统的不稳定性。最后,搭建了1台验证性实验样机,设置其充电电流和充电电压分别为3 A和60 V,其最大系统功率传输效率可达到92.9%。实验结果与理论分析基本一致,验证了所提系统的正确性和可行性。Compared with the traditional plug-in charging system,the wireless power transfer(WPT)system has attracted more and more attention owing to its features which are safer,efficient,stable and convenient.Firstly,t a three-coil constant current(CC)and constant voltage(CV)wireless charging system based on topology switching is proposed,which can realize load-independent CC and CV charging output functions.The switching between CC and CV modes can be achieved by setting up two AC switches,and the system can be operated in a zero phase angle(ZPA)state in both the CC and CV modes.Then,the AC switch is located on the receiving side of the system.The system does not need the assistance of additional wireless communication modules,which partly reduce the development cost of the system to a certain extent and avoids the instability caused by the possible interference of wireless communication.Finally,a validation test prototype was built with charging current of 3 A and charging voltage of 60 V,and its maximum power transmission efficiency can reach 92.9%.The experimental results basically agreed with the theoretical analysis,thus verifying the correctness and feasibility of the proposed system.

关 键 词：无线功率传输 零相位角 恒流 恒压 

分 类 号：TM724[电气工程—电力系统及自动化]