基于LCL-SS谐振网络的无线电能传输系统设计  

Design of Wireless Power Transmission System Based on LCL-SS Resonant Network

作　　者：莫汉秋 唐厚君[1] 蓝建宇[1] 姚辰[1] 

机构地区：[1]上海交通大学,国家智能电网(上海)研发中心,上海200240

出　　处：《电力电子技术》2015年第10期34-37,共4页Power Electronics

基　　金：国家自然科学基金(51277120)~~

摘　　要：SS补偿网络型感应耦合无线电能传输系统中,输出电压会随负载和传输距离的变化而变化。针对这一问题,提出一种基于LCL,导抗变换器的复合谐振网络,使得输出电压不受负载变化的影响。首先,采用基波分析法建立了LCL-SS诣振网络的阻抗模型,推导出主要参数对输出电压和传输效率的影响,得出当系统工作在谐振频率点时,系统的输出电压与负载无关。通过三维有限元仿真工具,对电磁耦合机构进行优化设计,有效提高了效率,并得到了电磁耦合机构的设计参数与传输效率的关系。最后,研发了一台基于LCL-SS谐振网络的无线电能传输样机并进行了实验,当功率为300W、距离为25 cm时,额定负载下的效率达到85%,实验结果验证了理论分析的正确性。In traditional SS-compensation inductively coupled wireless power transfer systems, output voltages and power transmission efficiency are sensitive to load and distance between coils.Aiming at solving this problem,a resonant topology of LCL immittance converter and optimum design of electromagnetic coupling coil are proposed.First of all, the impedance model of LCL-SS resonant network is established through first harmonic analysis.Based on this,the relationship between output voltage,power transmission efficiency and main parameters are defivated.When the inductive coupling system operate at resonant frequency, the output voltage and power transmission efficiency will be independent on load.Through 3D finite element simulation, the relationship of electromagnetic coupling coil with parameters of SS compensation network is illustrated.Finally,prototyping experiments of a wireless power transmission system based on LCL-SS resonant network proves the correctness of theoretical analysis and simulation results.Output power of proto- typing system is 300 W with efficiency being 85% in the rated load.

关 键 词：无线电能传输 感应耦合 导抗变换器 

分 类 号：TM72[电气工程—电力系统及自动化]