Middle range wireless power transfer systems with multiple resonators  

作　　者：陈新 张桂香 

机构地区：[1]State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body (Hunan University) [2]Department of Energy and Electrical Engineering, Hunan University of Humanities, Science and Technology

出　　处：《Journal of Central South University》2015年第6期2127-2136,共10页中南大学学报（英文版）

基　　金：Project(61104088)supported by the National Natural Science Foundation of China;Project(12C0741)supported by Scientific Research Fund of Hunan Provincial Education Department,China

摘　　要：The equivalent two-port network model of a middle range wireless power transfer(WPT) system was presented based on strongly coupled multiple resonators. The key parameters of the WPT system include self-inductance, resistance, parasitic capacitance, mutual inductance and S-parameters of coils & resonators were analyzed. The impedance matching method was used to optimize load power and transmission efficiency of the multi-resonator WPT system, and the impedance matching method was realized through adjusting the distances between the coils and resonators. Experiments show that the impedance matching method can effectively improve load power and transmission efficiency for middle range wireless power transfer systems with multiple resonators, at distances up to 3 times the coil radius with efficiency more than 70% and load power also close to 3.5 W.The equivalent two-port network model of a middle range wireless power transfer（WPT） system was presented based on strongly coupled multiple resonators. The key parameters of the WPT system include self-inductance, resistance, parasitic capacitance, mutual inductance and S-parameters of coils ＆ resonators were analyzed. The impedance matching method was used to optimize load power and transmission efficiency of the multi-resonator WPT system, and the impedance matching method was realized through adjusting the distances between the coils and resonators. Experiments show that the impedance matching method can effectively improve load power and transmission efficiency for middle range wireless power transfer systems with multiple resonators, at distances up to 3 times the coil radius with efficiency more than 70% and load power also close to 3.5 W.

关 键 词：wireless power transfer middle range multiple resonators S-PARAMETERS two-port network impedance matching 

分 类 号：TM73[电气工程—电力系统及自动化]