基于多端口网络理论的多负载WPT系统效率最大化研究  

Research on efficiency maximization of multi-load WPT system based on multi-port network theory

作　　者：杨云虎[1] 李钰 梁大壮 薛建志 贾维娜 杨志 YANG Yunhu;LI Yu;LIANG Dazhuang;XUE Jianzhi;JIA Weina;YANG Zhi(Anhui Provincial Key Laboratory of Power Electronics and Motion Control,Anhui University of Technology,Ma’anshan 243000,China)

机构地区：[1]安徽工业大学安徽省高校电力电子与运动控制重点实验室,安徽马鞍山243000

出　　处：《电机与控制学报》2024年第8期163-173,共11页Electric Machines and Control

基　　金：国家自然科学基金面上项目(51577002);安徽省自然科学基金面上项目(1508085)。

摘　　要：针对多负载无线电能传输系统效率的最大化问题,采用多端口网络理论分析并将系统效率最大化下的最优负载值问题转为求解广义特征值问题。首先,搭建单输入多输出多负载无线电能传输系统模型,结合端口网络理论和广义瑞利商深入研究系统最佳负载和最大效率之间的关系。在系统参数确定的前提下,通过对系统负载值进行设计,可以实现系统达到最高效率运行的状态,并应用对偶原理将理论成果推广至多负载电容式无线电能传输系统中;其次,采用遗传算法对多负载无线电能传输系统效率进行寻优,确定最佳负载值的正确性和可行性;最后,搭建了基于S-S拓扑的电感式无线电能传输系统实验平台,将单输入两输出、单输入三输出、单输入两不同、单输入三不同输出负载系统作为样本,仿真和实验数据对比验证了所提方法的正确性及最佳负载的可行性。Multi-port network theory was employed to analyze the efficiency maximization for multi-load WPT system,and the optimal load value problem under maximum system efficiency was transformed to solve the problem of a generalized eigenvalue.Firstly,the optimal load value under the efficiency maximization was derived theoretically for multiple-load inductive WPT system.Secondly,according to the duality principle,the optimal load value under the efficiency maximization was presented for multiple-load capacitive WPT system.Thirdly,the genetic algorithm was used to verify the correctness of the theoretical analysis employed multi-port network theory.Finally,the experimental platform of a SS-based inductive WPT system was built,the load systems with single input and two outputs,single input and three outputs,single input and four outputs,single input and two different outputs and single input and three different outputs were taken as samples.By comparing the simulation and experimental data,the correctness of the theoretical analysis and the feasibility of the optimal load design are verified.

关 键 词：无线电能传输 多负载 最大效率 最佳负载 端口网络理论 遗传算法 

分 类 号：TM724[电气工程—电力系统及自动化]