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

作　　者：王长清 蒋帅 贺坤宇 王萌 耿直 王振玲 WANG Changqing;JIANG Shuai;HE Kunyu;WANG Meng;GENG Zhi;WANG Zhenling(College of Electronics and Electrical Engineering,Henan Normal University,Xinxiang 453007,China;Henan Key Laboratory of Optoelectronic Sensing Integrated Application,Xinxiang 453007,China;Henan Engineering Laboratory of Additive Intelligent Manufacturing,Xinxiang 453007,China;School of Internet of Things Engineering,Wuxi Institute of Technology,Wuxi 214121,China)

机构地区：[1]河南师范大学电子与电气工程学院,新乡453007 [2]河南省光电传感集成应用重点实验室,新乡453007 [3]增材智能制造河南省工程实验室,新乡453007 [4]无锡职业技术学院物联网工程学院,无锡214121

出　　处：《电源学报》2025年第1期200-208,共9页Journal of Power Supply

基　　金：国家自然科学基金资助项目(52177004)。

摘　　要：为解决电动汽车动态充电过程中因负载电阻和耦合系数时刻波动造成的系统恒压输出不稳和效率低下的问题,提出1种新型双边控制方案。通过调节发射端高频逆变器脉宽角θ实现恒压控制输出,通过调节接收端可控整流器脉宽角φ实现系统最大效率追踪控制。理论分析证明当导数∂[sin(θ/2)]/∂[sin(φ/2)]为1个特定常数时,系统可以始终工作在最大效率运行条件下。与同类型最大效率追踪控制方案相比,该方案不需要在发射端安装昂贵的电流或功率传感器,一定程度上降低了系统的开发成本。为验证所提方案的合理性,搭建了1台额定功率为360 W的验证性实验装置,实验结果充分证明所提方案的合理性和有效性。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 angleθof a high-frequency inverter at the transmitter,and the maximum efficiency tracking(MET)control of the system is realized by adjusting the pulse width angleφof 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 

分 类 号：TM724[电气工程—电力系统及自动化]