不同补偿拓扑结构下电动汽车无线充电系统传输特性对比  

Comparison of Transmission Characteristics of Electric Vehicles Wireless Charging System under Different Compensation Topologies

作　　者：耿琪琛 刘坤[1] 程少宇 田子涵 康锦萍[1] 赵海森[1] GENG Qichen;LIU Kun;CHENG Shaoyu;TIAN Zihan;KANG Jinping;ZHAO Haisen(School of Electrical and Elrctric Engineering North China Electric Power University,Beijing 102200,China)

机构地区：[1]华北电力大学电气与电子工程学院,北京102200

出　　处：《电力科学与工程》2021年第9期18-25,共8页Electric Power Science and Engineering

摘　　要：无线电能传输系统(WPTS)的核心器件为耦合变压器,其原、副边线圈间的气隙会产生漏感和激磁电感,从而降低输出功率和传输效率。为了补偿漏感和激磁电感,WPTS需要添加补偿网络。根据原、副边补偿方式不同,有SS(series-series)型、双边LCL型和双边LCC型补偿拓扑。针对这3种典型的补偿拓扑,通过MATLAB/SIMULINK仿真,分析其传输特性,并分析了其在抗偏移方面的性能。结果发现SS型补偿拓扑适用于高功率工作环境,但在某些特殊工况中存在较大安全隐患;LCL型补偿拓扑鲁棒性较好,但不适于大功率系统;LCC型补偿拓扑在保持较好鲁棒性的同时,传输功率有明显提高。搭建实验平台对SS型补偿拓扑的传输特性进行验证,发现当磁耦合器不发生偏移时,传输功率可达3 kW以上,当耦合器线圈偏移到200 mm时,传输功率高达6 kW。The core device of WPTS is a coupling transformer.The air gap between the primary and secondary coils will produce leakage inductance and magnetizing inductance,which reduces the output power and transmission efficiency.To compensate for leakage inductance and magnetizing inductance,a compensation network is needed.According to the different compensation methods of the primary and secondary side,the typical compensation topologies are SS(series-series)type,bilateral LCL type(hereinafter referred to as LCL type)and bilateral LCC type(hereinafter referred to as LCC type)compensation.In this paper,for these three typical compensation topologies,through MATLAB/SIMULINK simulation,their transmission characteristics were analyzed,and their anti-offset performance was analyzed.The results show that the SS-type compensation topology is suitable for high-frequency operating environment.However,there is great hidden danger in some special conditions.The LCL-type compensation topology is more robust but not suitable for high power systems,The LCC-type compensation topology maintains better robustness,and the transmission power is also significantly improved.In this paper,an experimental platform is built to verify the transmission characteristics of the SS-type compensation topology.When the coupler coil is not offset,the transmission power can reach more than 3 kW,and when the coupler coil is offset to 200 mm,the transmission power is as high as 6 kW.

关 键 词：无线电能传输系统 补偿拓扑结构 输出功率 抗偏移性能 传输特性 

分 类 号：TM724[电气工程—电力系统及自动化]