磁耦合共振无线能量传输系统中平面螺旋线圈的设计

Design of Planar Spiral Coil Applied to the Magnetic Coupling Resonance System

采用基于矩量法的电磁仿真软件(FEKO)对平面螺旋线圈进行3D建模,并通过计算50 cm处的近场值,得出平面螺旋线圈的谐振频率,省略了传统方法对平面螺旋线圈电感量进行的复杂计算.根据仿真模型数据制作线圈,并测试其S11参数.实验与仿真结果表明,该方法可简化平面螺旋线圈的设计.在磁耦合共振无线能量传输系统中用19.3 MHz线圈传输能量,点亮了一组LED阵列,因此该设计可用于无线能量传输系统.

We used electromagnetic simulation software FEKO which is based on the method of moments （MOM） to establish 3D modeling planar spiral coil and obtained the resonant frequency of the planar spiral coil by calculating 50 cm near-field values. This method omitted the traditional complex mathematical calculations on planar spiral coil self-inductance. We manufactured the planar coil according to the simulation size, and tested the $11 parameter. The comparison of experimental and simulation results proved the accuracy of the simulation. This approach greatly simplified the design of the planar spiral coil. Finally, we used a coil the resonant frequency of which is 19.3 MHz to light up a led array that proved the feasibility of the design for wireless energy transmission system.