WPT系统最大效率跟踪下的阻抗匹配网络优化设计  

Optimal Design of Impedance Matching Network Based on Maximum Efficiency Tracking in WPT System

作　　者：范曦[1] 刘媛媛[1,2] 殷庆辉 FAN Xi;LIU Yuanyuan;YIN Qinghui(School of Artificial Intelligence,Wuxi Vocational College of Science and Technology,Wuxi Jiangsu 214028,China;School of IoT Engineering,Jiangnan University,Wuxi Jiangsu 214122,China;Wuxi Autowell Technology Co.,Ltd.Wuxi Jiangsu 214028,China)

机构地区：[1]无锡科技职业学院人工智能学院,江苏无锡214028 [2]江南大学物联网学院,江苏无锡214122 [3]无锡奥特维科技股份有限公司,江苏无锡214028

出　　处：《电子器件》2022年第6期1317-1323,共7页Chinese Journal of Electron Devices

基　　金：江苏省高校“青蓝工程”资助项目;2021年江苏省青年教师企业实践培训项目(2021QYSJ075)。

摘　　要：针对无线电能传输(Wireless Power Transfer,WPT)系统最大效率跟踪下的阻抗匹配问题,通过引入匹配因子和可编程电容阵列(Programmable Capacitor Array,PCA),同时结合遗传算法加反向传播神经网络(Genetic Algorithm-Back Propagation,GA-BP)的控制策略,设计了CLCC型阻抗匹配网络。该匹配网络有效地消除整流性负载的非线性,以确保系统等效电路始终保持纯阻态。仿真和实验表明,所提出的阻抗匹配网络方法较好地消除了整流电路非线性,且匹配范围宽、精度高、速度快,确保了系统始终工作于最大效率点。Aiming at the problem of equivalent load impedance matching of the wireless power transfer(WPT)system under the condition of maximum efficiency tracking,a matching factor and the programmable capacitor array(PCA)are introduced.Combined with the control strategy of genetic algorithm and back propagation neural network(GA-BP),the CLCC impedance matching network is designed.The matching network can effectively eliminate the nonlinearity of rectifying load to ensure that the equivalent circuit of the system is always purely resistive.Simulation and experiment show that the proposed impedance matching method can eliminate the nonlinearity of rectifier circuit,and has wide matching range,high precision and fast speed,which ensures that the system always works at the maximum efficiency point.

关 键 词：无线电能传输 阻抗匹配网络 可编程电容整列 GA-BP神经网络 

分 类 号：TM72[电气工程—电力系统及自动化]