无线电能传输系统的补偿分析  

Analysis of Compensation with Wireless Power Transmission System

作　　者：吴大中[1] 李晓曼[1] 

机构地区：[1]南京信息工程大学江苏省气象探测与信息处理重点实验室,南京210044

出　　处：《河南大学学报（自然科学版）》2015年第6期728-734,共7页Journal of Henan University:Natural Science

基　　金：国家自然科学基金(41175033)

摘　　要：无线电能传输系统是一种借助空间无形软介质实现能量传输的装置.从无线电能传输系统的结构入手,分析了无线电能传输的工作原理及其模型,建立了高频下四种无线电能传输系统的补偿拓扑结构,推导出谐振频率下补偿电容的表达式;对无补偿的系统性能和四种补偿后的系统性能从反映阻抗方面进行分析比较,发现补偿后系统的反映电阻得到增加,系统的功率传输能力得到提升;然后针对串串型和串并型的拓扑结构,给出了效率与补偿电容的仿真图,并通过电路仿真软件LTspice对负载端的电流和电压进行了仿真,最后通过借助实验平台验证了前述分析的正确性.Wireless power transmission system is a device transferring energy with invisible soft medium.From the structure of the wireless transmission system,the principle and model of the system are analyzed and four compensation topologies have been established under a high frequency.The expressions of compensation capacitors under resonant frequency are deduced.Uncompensated systems and four compensated systems about reflecting impedance are analyzed.The results show that the resistance and power transmission ability both get promoted.Then based on the topologies of the series-series and series-parallel,simulation diagram between efficiency and compensated capacitor is given.The circuit simulation software LTspice is used to simulate the current and voltage of load.Finally the correctness of foregoing analysis is proved through experiment.

关 键 词：谐振耦合 无线电能传输 补偿拓扑 反映阻抗 功率传输能力 

分 类 号：TM724[电气工程—电力系统及自动化]