基于频率调节的电动汽车无线充电互操作性提升方法研究  

Research on Improving Interoperability of Electric Vehicle Wireless Power Transfer Based on Frequency Adjustment

作　　者：陈志鑫 张献[1] 沙琳[2] 杨庆新[1] 孙于 刘立东 Chen Zhixin;Zhang Xian;Sha Lin;Yang Qingxin;Sun Yu;Liu Lidong(State Key Laboratory of Reliability and Intelligence of Electrical Equipment Hebei University of Technology,Tianjin 300131,China;Tianjin Key Laboratory of Electrical Equipment Intelligent Control Tiangong University,Tianjin 300387,China;China Electrotechnical Society,Beijing 100055,China;Hengdian Group DMEGC Magnetics Co.Ltd,Jinhua 322118,China)

机构地区：[1]省部共建电工装备可靠性与智能化国家重点实验室(河北工业大学),天津300131 [2]天津市电气装备智能控制重点实验室(天津工业大学),天津300387 [3]中国电工技术学会,北京100055 [4]横店集团东磁股份有限公司,金华322118

出　　处：《电工技术学报》2023年第5期1237-1247,共11页Transactions of China Electrotechnical Society

基　　金：国家自然科学基金资助项目(52122701,51977147,51807138)。

摘　　要：随着电动汽车无线充电技术的普及,如何实现不同厂家、不同型号的地面端与车辆端设备之间的互联互通,已成为制约无线充电技术推广和规模化的关键性问题。该文首先通过定义归一化角频率和电路类品质因数Q、Qf表征系统频率与系统固有参数特性,提出一种电动汽车无线充电系统模型的简化方法,并对系统频率特性进行分析研究;然后提出基于频率调节提升电动汽车无线充电系统互操作性的方法;最后搭建大功率电动汽车无线充电互操作性实验平台,通过仿真与实验验证了通过频率调节提升互操作性的正确性。该文对电动汽车无线充电技术的推广与产业化发展提供了理论支撑与技术参考。In recent years,electric vehicle wireless power transfer technology has been popularized and promoted due to its advantages of high safety,high reliability,high energy efficiency and high adaptability.However,with the development of the technology,it will inevitably lead to the coexistence of multiple manufacturers,models and technical routes.There are obvious differences in power level,transmission distance,coil type,compensation structure,control mode,packaging process,communication and other aspects.Therefore how to realize the interoperability between ground terminal equipments and vehicle terminal equipment which comes from different manufacturers and models has become the key to the development of electric vehicle wireless wireless power transfer technology.This paper proposes a method to improve system interoperability based on frequency regulation.And according to this method the output characteristics of systems without interoperability or with poor interoperability can be improved in a wide range.Firstly,the fundamental wave analysis method is used to construct the KVL equation for the wireless power transfer system of LCC-LCC type electric vehicle.By defining the normalized angular frequency,the circuit similar quality factor Q and Qf to characterize the system frequency and the inherent parameter characteristics and simplify the equation of the system.Then simplify the expressions of the system output power and system efficiency by using the relationship of the order of magnitude under.According to the above study,the change curves of the output power and system efficiency under different system parameters are determined.The above analysis proves theoretically the influence of system frequency on interoperability.A method to improve the interoperability of the wireless power transfer system based on frequency regulation is proposed.US,IS,UL,IL is the power supply voltage,power supply current,load voltage and load current respectively.First,determine the optimal resonance point of the system through si

关 键 词：无线充电 互联互通 互操作性 频率调节 归一化角频率 

分 类 号：TM724[电气工程—电力系统及自动化]