摘要
该文提出了一种可以实现动态阻抗匹配的交直流转换电路及自适应阻抗调节算法,通过可调电容矩阵和可调电感的共振作用实现阻抗匹配,并利用改进的梯度下降算法实现了元器件参数的动态调整,提高了声载波无线电能传输系统在实际应用中的驱动效果和适应能力。研究对提出的电路结构和算法进行了模型仿真,并分析了不同负载接入时系统阻抗的变化及其动态调整的过程。仿真结果表明,该阻抗匹配调整算法可以迅速对交直流转换电路进行调整,在负载变化的情况下可达到较好的动态匹配效果。
A dynamic impedance matching AC-DC converter and adaptive impedance matching algorithm are proposed,in order to improve the efficiency of the ultrasonic wireless energy transmission system with different driving loads.The dynamic impedance matching of the AC/DC converter is realized by adjusting the component values of the adjustable capacitance matrix and the adjustable inductance in the AC/DC converter.The value of electron components is calculated by the improved gradient descent algorithm.A model is built to simulate the AC/DC converter and the algorithm performances.Simulation results show that the dynamic impedance matching can be achieved by adjusting the value of electron components in the AC/DC converter with the improved gradient descent algorithm under different load conditions.
作者
宋哲超
余紫莹
杨军
SONG Zhechao;YU Ziying;YANG Jun(Key Laboratory of Noise and Vibration Research,Institute of Acoustics,Chinese Academy of Sciences,Beijing 100190,China;University of Chinese Academy of Sciences,Beijing 100049,China)
出处
《应用声学》
CSCD
北大核心
2022年第2期192-198,共7页
Journal of Applied Acoustics
基金
国家自然科学基金项目(11804368)
中国科学院声学研究所青年英才计划项目(QNYC201722)。
关键词
声载波通信
无线电能传输
交直流转换电路
阻抗匹配
动态调节算法
Ultrasonic communication
Wireless energy transmission
AC/DC converter
Impedance matching
Adaptive algorithm
