电源学报2025，Vol.23Issue(1)：200-208,9.DOI:10.13234/j.issn.2095-2805.2025.1.200
低成本具备最大效率追踪功能的WPT系统
Low-cost WPT System with Maximum Efficiency Tracking Function
摘要
Abstract
To solve the problems of constant-voltage output instability and low efficiency caused by load resistance and coupling coefficient fluctuations in the dynamic charging process of an electric vehicle,a novel dual-side control scheme is proposed.In this scheme,the constant-voltage control output is realized by adjusting the pulse width angle θ of a high-frequency inverter at the transmitter,and the maximum efficiency tracking(MET)control of the system is realized by adjusting the pulse width angle φ of a controllable rectifier at the receiver.Through theoretical analysis,it is proved that when the derivative ∂[sin(θ/2)]/∂[sin(φ/2)]is a specific constant,the system can always work under the operating condition of maximum efficiency.Compared with the same type of MET control scheme,the proposed scheme does not need to install expensive current or power sensors on the transmitter,which reduces the system's development cost to a certain extent.To verify the rationality of the proposed scheme,an experimental verification device with a rated power of 360 W was built,and experimental results fully proved the rationality and effectiveness of this scheme.关键词
高频逆变器/可控整流器/恒压/双边控制/最大效率追踪Key words
High-frequency inverter/controllable rectifier/constant voltage/dual-side control/maximum efficiency tracking(MET)分类
信息技术与安全科学引用本文复制引用
王长清,蒋帅,贺坤宇,王萌,耿直,王振玲..低成本具备最大效率追踪功能的WPT系统[J].电源学报,2025,23(1):200-208,9.基金项目
国家自然科学基金资助项目(52177004)This work is supported by National Natural Science Foundation of China under the grant 52177004 （52177004）
