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.
Based on the theory of electromagnetic shielding, modeling simulation is carried out to analyze the shiel- ding effectiveness of electromagnetic shielding body and its influence on coupling efficiency of wireless charging sys- tem using electromagnetic field simulation software ItFSS. 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 in- ductance 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.
出处
《南京信息工程大学学报（自然科学版）》
CAS
2013年第2期163-166,共4页
Journal of Nanjing University of Information Science & Technology（Natural Science Edition）
基金
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)
关键词
无线充电
电磁屏蔽
屏蔽效能
wireless charging
magnetic shielding
shielding effectiveness
