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电磁屏蔽对无线充电系统的影响分析
引用本文:陈炜峰,朱美杰,郭海军,刘俊栋.电磁屏蔽对无线充电系统的影响分析[J].南京气象学院学报,2013,5(2):163-166.
作者姓名:陈炜峰  朱美杰  郭海军  刘俊栋
作者单位:南京信息工程大学 信息与控制学院,南京,210044;南京信息工程大学 信息与控制学院,南京,210044;南京信息工程大学 信息与控制学院,南京,210044;南京信息工程大学 信息与控制学院,南京,210044
基金项目:江苏省高校优势学科(传感网与现代气象设备)平台建设基金;南京信息工程大学科研基金(20100313);江苏省大学生实践创新训练项目(10CX021)
摘    要:在介绍电磁屏蔽理论的基础上,利用电磁场仿真软件HFSS,建模仿真分析了电磁屏蔽体的屏蔽效能及其对无线充电系统耦合效率的影响.通过屏蔽体外特殊点屏蔽前后的场强对比,分析屏蔽效能;通过仿真接收线圈内一点屏蔽前后的磁场强度变化,运用相关公式计算互感变化分析其对耦合效率的影响.分析结果表明:采取电磁屏蔽措施,不仅能减少系统对外界的电磁辐射干扰,而且能增大系统的耦合传输效率.实验结果证明了仿真分析的正确性.

关 键 词:无线充电  电磁屏蔽  屏蔽效能
收稿时间:2012/3/18 0:00:00

Application of magnetic shielding in wireless charging system
CHEN Weifeng,ZHU Meijie,GUO Haijun and LIU Jundong.Application of magnetic shielding in wireless charging system[J].Journal of Nanjing Institute of Meteorology,2013,5(2):163-166.
Authors:CHEN Weifeng  ZHU Meijie  GUO Haijun and LIU Jundong
Institution:School of Information and Control, Nanjing University of Information Science & Technology, Nanjing 210044;School of Information and Control, Nanjing University of Information Science & Technology, Nanjing 210044;School of Information and Control, Nanjing University of Information Science & Technology, Nanjing 210044;School of Information and Control, Nanjing University of Information Science & Technology, Nanjing 210044
Abstract:Based on the theory of electromagnetic shielding,modeling simulation is carried out to analyze the shielding effectiveness of electromagnetic shielding body and its influence on coupling efficiency of wireless charging system using electromagnetic field simulation software HFSS.Comparison of field intensity before and after shielding is conducted in a point outside the electromagnetic shielding body to analyze the shielding effectiveness.The magnetic field intensity change in a point inside the receiving coil is simulated,and the influence of shielding on mutual inductance and coupling efficiency is analyzed accordingly.The analysis result indicates that electromagnetic shielding measures will reduce the interference of wireless charging system on outside environment,and enhance the system coupling transmission efficiency.The experiment verifies the simulation analysis.
Keywords:wireless charging  magnetic shielding  shielding effectiveness
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