Multiphysics金属介质对磁共振耦合无线电能传输性能的影响
时间:2018-08-07 10:53 来源:毕业论文 作者:毕业论文 点击:次
| 摘要近年来，无线电能传输一直是电能传输研究的重点。无线电能传输技术就是用电设备间以非接触式从固定电网获取能量的技术，电源和用电设备之间无电气连接，因此其具有便捷的使用方式和良好的安全性等优点。26693 磁共振耦合无线电能传输是通过非接触式的发射和接收线圈之间的磁共振耦合传递电能，所以传输介质成为影响其传输效率和传输距离的主要因素。本论文在调研和总结以前对磁共振耦合无线电能传输研究的基础上，通过建立磁共振无线电能传输模型，着重研究了金属介质的材料属性对磁共振耦合无线电能传输的传输距离、传输效率等性能的影响。用COMSOL Multiphysics仿真软件对单线圈磁场分布与双线圈磁共振耦合进行了建模和仿真，并重点探究了在三种障碍物（铝、合金钢、铁氧体）周围的磁场分布情况，再改变金属几何尺寸、与发射线圈和接收线圈的距离等因素对磁共振耦合无线电能传输性能的影响，最后得到相对磁导率、电导率等参数对磁共振耦合无线电能传输的影响。 关键词 磁共振耦合 无线电能传输 电导率 金属介质 建模 仿真 毕业论文设计说明书外文摘要 Title Effect of Metal media magnetic resonance wireless Power transmission performance coupling Abstract In recent years, wireless power transmission has been the focus of the study of power transmission. Wireless power transmission technology among the non-contact electrical device to extract energy from the fixed grid technology, no electrical connection between the power supply and electrical equipment, so it has convenient use and good security and other advantages. Magnetic resonance coupling wireless power transmission is the transfer of power by magnetic resonance coupling non-contact between the transmitting and receiving coils, the transmission media become the main factors affecting the transmission efficiency and the transmission distance. This paper summarizes previous research and the underlying magnetic resonance coupling wireless power transmission research, by establishing a magnetic resonance wireless power transmission model, focusing on the transmission distance, the transmission efficiency of the material properties of the metal medium magnetic resonance coupling wireless power transmission, etc. performance. COMSOL Multiphysics simulation software with single-coil and dual-coil magnetic field distribution of the magnetic resonance coupling is modeled and simulated, and focus on exploration in the three obstacles (aluminum, steel, ferrites) magnetic field distribution around again metal geometry changes, coupled with the influence of the magnetic resonance properties of the wireless power transmission distance of the transmitter and receiver coils factors affect the finally obtained relative magnetic permeability, electrical conductivity and other parameters of the magnetic resonance wireless power transmission coupling. Keywords Magnetic resonance coupling Wireless power transmission Conductivity Metal Media Modeling Simulation 目 次 1 绪论 1 1.1 研究背景和意义 1 1.2 研究现状 1 1.3 本论文的主要研究内容 3 2 磁共振耦合模模型 4 2.1 耦合模理论 4 2.2 磁共振耦合无线电能传输的耦合模型 5 2.3 磁共振耦合无线电能传输最佳频率 7 3 仿真模型的建立与分析 8 3.1 空气介质和金属介质的影响 9 (责任编辑：qin) |