基于变结构中继回路的感应电能传输无线充电系统  

IPT Wireless Charging System with Variable Structure Relay Circuit

作　　者：孙杰杉 杨金明[1] 刘润鹏 邓梓颖 SUN Jieshan;YANG Jinming;LIU Runpeng;DENG Ziying(School of Electric Power,South China University of Technology,Guangzhou,Guangdong 510641,China)

机构地区：[1]华南理工大学电力学院,广东广州510641

出　　处：《广东电力》2021年第1期41-48,共8页Guangdong Electric Power

基　　金：广东省大学生科技创新培育专项资金资助项目(pdjh2020b0037)。

摘　　要：针对感应电能传输(inductive power transfer,IPT)无线充电系统中恒压或恒流输出的相互转换问题,基于LCL/S拓扑电路,提出含变结构中继谐振回路的恒压恒流无线充电系统,利用2个相互解耦的DD型线圈作为中间线圈,与谐振电容器形成谐振回路,使用2个交流开关用于系统充电模式的切换,实现独立于负载的恒流和恒压充电。该结构不需要原副边通信以及复杂的控制策略,在充电过程中没有无功功率输入,可获得较高的传输功率和传输效率。为了验证该方法的有效性和可行性,在PSIM中进行电路仿真并搭建实验原理样机,实验结果表明:基于所提方法输出的恒流和恒压随着电池等效负载电阻改变而轻微变化,但仍然满足电池恒流和恒压充电要求。To solve the problem of mutual conversion between constant current output and constant voltage output of the inductive power transfer(IPT)wireless charging system,this paper proposes the constant voltage and constant current relay wireless charging system with variable structure resonance circuit based on LCL/S topology.By using two decoupling DD type coil as the intermediate coil to build up the resonant capacitor resonant circuit,and using AC switches for system charging mode,this system can realize constant current and constant voltage charging independent of the load.The structure of this system does not require primary and secondary side communication and complex control strategy,and has no reactive power input during charging process,so it can obtain higher transmission power and transmission efficiency.In order to verify the effectiveness and feasibility of the proposed method,the paper carries out circuit simulation in PSIM,establishing an experimental sample machine.The simulation results show that the output constant current and constant voltage of the proposed method change slightly with the change of equivalent load resistance of the battery,but still meet the requirements of battery charging.

关 键 词：感应电能传输 无线充电 恒压充电 恒流充电 DD线圈 交流开关 

分 类 号：TM724[电气工程—电力系统及自动化]