摘要
基于一次谐波近似的无线电能传输系统动态建模中,一般假设整流桥的输入电压与电流同相,但该假设条件会导致建模精度降低。针对该问题,提出了将整流桥电压电流相角、增益作为超参数融入传统动态模型,并通过最小化模型输出与实测输出之间的二次损失函数,估计最优整流桥参数,从而形成一种新的无线电能传输系统动态建模精度提升方法。实验结果表明,采用该方法得到的无线电能传输系统动态模型,其输出曲线更贴近实际输出曲线,利用该模型能更准确地描述系统的动态特性。
In the dynamic modeling of wireless power transfer system based on the first harmonic approximation,it is generally assumed that the input voltage and current of the rectifier bridge are in the same phase,which,however,may reduce the model accuracy.To solve this problem,a novel method is proposed to enhance the dynamic modeling accuracy of wireless power transfer system.This approach incorporates the phase angle and gain of the rectifier bridge as hyperparameters into traditional dynamic models,estimating the optimal rectifier bridge parameters by minimizing the quadratic loss function between model and measured outputs.Experiment results show that dynamic models of wireless power transfer system obtained by this method has an output curve that is closer to the actual output curve,and can better describe the dynamic characteristics of the system.
作者
邢恺
周晓俊
高晓会
陈丰伟
李颖恒
XING Kai;ZHOU Xiao-jun;GAO Xiao-hui;CHEN Feng-wei;LI Ying-heng(School of Automation,Chongqing University,Chongqing 400044;Beijing Institute of Aerospace Control Devices,Beijing 100039)
出处
《导航与控制》
2023年第5期16-21,28,共7页
Navigation and Control
基金
装备重大基础研究项目(编号:514010208-103)
国家自然科学基金(编号:U1937603)
关键词
动态建模
整流桥非线性
无线电能传输
参数优化
dynamic modeling
rectifier bridge nonlinearity
wireless power transfer
parameter optimization
作者简介
邢恺,性别:男,学历:硕士研究生,专业:电子信息,研究方向:无线电能传输
