摘要
针对无线供电技术在工程运用中、工作环境中通常存在电磁耦合系统初、次级线圈被金属轴穿过的情况,在金属轴中存在较为严重的涡流效应,对电磁耦合式无线供电系统进行传输模型建立,通过求解麦克斯韦方程组,推导出涡流损耗的解析表达式,并将电磁耦合模型与金属介质中的涡流损耗模型结合来分析系统工作中的涡流损耗特性。通过Maxwell电磁场仿真软件分析涡流特性来验证理论分析结果,并结合最终实验说明铁氧体磁屏蔽材料对于该环境中的涡流损耗的抑制效果。
According to the wireless power technology using in the project,it is normally that a mathematical model of serious eddy current loss coupling structure of primary and secondary coil is passed through by metal shaft in the working environment.Establishing a transport model of electromagnetic coupling wireless power supply system,the analytical expressions of eddy current loss is deduced by solving Maxwell＇s equations,analyze the eddy current losses in the system work eddy current loss characteristics combined with electromagnetic coupling model and eddy current losses in metal medium model.To verify the theoretical results,utilize Maxwell electromagnetic simulation software to analyze eddy characteristics,combined by the final experiment described ferrite magnetic shielding material for suppressing the effect of eddy current loss in metal environment.
出处
《电子测量技术》
2016年第3期38-41,共4页
Electronic Measurement Technology
关键词
无线供电
电磁耦合
金属环境
涡流损耗
磁屏蔽
wireless power
electromagnetic coupling
metal environment
magnetically shielded
作者简介
屠张杰，硕士研究生，主要研究方向为电磁耦合式无线电能传输，测试技术等。E—mail：tuzj1990@sina．com
