三线圈恒流恒压变频无线充电系统设计  

Design of Three-coil Constant Current Constant Voltage Frequency Conversion Wireless Charging System

作　　者：黄焘 HUANG Tao(Southern Power Grid Industry Investment Group Co.,Ltd.,Guangzhou 518000,China)

机构地区：[1]南方电网产业投资集团有限责任公司,广东广州518000

出　　处：《电力电子技术》2020年第11期28-30,共3页Power Electronics

摘　　要：与传统的电动自行车电池充电方式相比,无线电能传输(WPT)系统具有方便、安全等优点。结合电动自行车电池的应用需求,在此提出了一种基于三线圈结构的WPT系统,以实现理想可靠的恒流输出和恒压输出。通过对三线圈系统参数的设计,变频实现恒流和恒压状态的转化。并通过合理地选择补偿元件参数,可以在恒流和恒压两种模式下获得与负载无关的零相角恒流和恒压充电特性。最后,通过搭建4.6 A充电电流和56 V充电电压的实验,验证了该方法的可行性。In comparison to the traditional plug-in charging systems for the electric bike,wireless power transmission(WPT)systems have superior advantages of convenience and safety.Combining the application requirement range of the electric vehicle,a three-coil structure based WPT system is proposed in order to achieve ideal and reliable constant current output and constant voltage output.Two AC switches are utilized at the transmitter side to implement the change of charging mode from constant current to constant voltage.By correctly selecting the parameters of compensation components,the required load-independent constant current and constant voltage characteristics with zero phase angle in the constant current and constant voltage modes can be achieved.Finally,the feasibility of the method is verified through the construction of a laboratory platform with a 4.6 A charging current and a 56 V charging voltage.

关 键 词：无线电能传输 恒流 恒压 

分 类 号：TM724[电气工程—电力系统及自动化]