MIT无线输电系统电磁辐射特性研究  

Research of electromagnetic radiation characteristics of MIT wireless power transmission system

作　　者：田子建[1] 林越[1] 王文清[2] 陈健[1] 李玮祥 

机构地区：[1]中国矿业大学(北京)机电与信息工程学院,北京100083 [2]北京工业职业技术学院电气与信息工程学院,北京100042

出　　处：《工矿自动化》2015年第4期59-64,共6页Journal Of Mine Automation

基　　金：国家自然科学基金重点资助项目(51134024);国家自然科学基金资助项目(U1261125);北京市教育委员会创新团队建设提升计划资助项目(IDHT20130511)

摘　　要：采用全波矩量法及两步准静态算法研究了MIT无线输电系统取得最大传输效率时谐振线圈的磁场和电场分布,并通过HFSS有限元仿真软件定量分析了人脑对该系统电磁辐射的吸收情况。研究结果表明,系统输入功率为400 W时,谐振线圈的最大磁场和最大电场分别为9.376 3×10-3 A/m,1.52×102 V/m,磁场强度符合国际非电离辐射保护委员会规定的标准值,电场强度则大于规定标准值;在距发射线圈100mm处,人脑局部吸收辐射率最大值为7.038 9×10-6 W/kg,小于国际非电离辐射保护委员会规定的标准值。When MIT wireless power transmission system acquired the maximum transmission efficiency, magnetic and electric field distributions of resonant coil were simulated by full wave method of moments and magnetic quasi static algorithm. Human brain absorption of electromagnetic radiation of the system was analyzed quantitatively by using HFSS finite element simulation software. The simulation results show that if the power of 400 W is transferred, the maximum magnetic field strength and the electric one of resonant coils are 9. 376 3 × 10^-3 A/m and 1.52 × 10^2 V/m respectively. The magnetic field strength meets standards of International Commission on Non-Ionizing Radiation Protection but the electric one beyond the standard value. The maximum of local SAR is 7. 038 9 × 10^-6 W/kg at 100 mm away from the transmitter coil, which is less than the standard value of International Commission on Non-Ionizing Radiation Protection.

关 键 词：无线输电 磁耦合共振 电磁辐射 最大传输效率 吸收辐射率 全波矩量法 

分 类 号：TD67[矿业工程—矿山机电]