三相多负载无线电能传输系统建模与特性分析  

Modelling and characterisation of three-phase multi-load wireless energy transmission systems

作　　者：刘伟 王赟 符气叶[1] Liu Wei;Wang Yun;Fu Qiye(Intelligent Engineering College,Guangdong AIB Polytechnic College,Guangzhou 510507,China)

机构地区：[1]广东农工商职业技术学院智能工程学院,广州510507

出　　处：《国外电子测量技术》2024年第10期110-119,共10页Foreign Electronic Measurement Technology

基　　金：2021年广东省普通高校重点领域专项(新一代信息技术)(2021ZDZX1143)资助。

摘　　要：为了提高无线电能传输系统单体容量和整体传输能力,提出采用基于三相逆变器的多负载无线电能传输系统,发射端采用电压型双极性正弦脉冲宽度调制(SPWM)控制桥式逆变器,接收端为3个采用并联谐振电路的独立单元。通过耦合电路理论推导了系统传输效率公式,分析了传输效率与负载、互感系数的关系。在此基础上,提出了传输系统恒流输出自适应PID控制方案和负载切入切出控制方法。最后通过MATLAB仿真和实物实验平台验证了所提及拓扑和控制方案的有效性和可行性。三相传输系统每相的输出功率达到60 W左右,传输效率分别达到90%以上,与单相无线系统输出功率和传输效率相当,有效提高了传输系统的单体容量和传输能力。To improve the single-unit capacity and overall transmission capability of wireless power transmission systems.This paper proposes a multi-load wireless power transmission system based on a three-phase inverter.The transmitting end uses a voltage-type bipolar SPWM controlled bridge inverter,and the receiving end is composed of three independent units with parallel resonant circuits.Through the theoretical derivation of the coupling circuit,the system transmission efficiency formula is obtained,and the relationship between transmission efficiency and load and mutual inductance coefficient is analyzed.On this basis,an adaptive PID control scheme for constant current output of the transmission system and a load cut-in and cut-out control method are proposed.Finally,the effectiveness and feasibility of the mentioned topology and control scheme are verified through MATLAB simulation and a physical experiment platform.The output power of each phase of the three-phase transmission system reaches about 60 W,and the transmission efficiencies reach more than 90%respectively,which is equivalent to the output power and transmission efficiency of a single-phase wireless system,effectively improving the single-unit capacity and transmission capability of the transmission system.

关 键 词：三相逆变器 多负载 建模分析 自适应 PID控制 恒流输出 

分 类 号：TN710[电子电信—电路与系统]