磁谐振无线电能传输系统的磁耦合结构优化设计

Optimal design for magnetic coupling structure of magnetic resonant wireless power transfer system

磁耦合结构是磁谐振无线电能传输系统的关键核心部分，其传输性能的好坏直接影响到该传输方式的进一步推广应用。针对在实际应用中对磁耦合结构提出的小体积要求，提出了一种在有限尺寸空间下优化设计磁耦合结构的方法。该方法综合考虑了线圈的工作频率、线圈结构、匝间距、导线半径等因素，以传输效率为优化目标，采用理论计算和仿真分析相结合的手段，解决了有限尺寸空间下磁耦合结构的优化设计问题。最后根据优化设计结果，制作了一组线圈，并对其自感、互感、内阻进行了测试，测试结果与仿真分析结果或理论计算结果基本一致，验证了该优化设计方法的可行性。

The magnetic coupling structure is the key part of the magnetic resonance wireless power transmission system, and its transmission performance has a direct impact on the further popularization and application. In view of the small volume requirement of the magnetic coupling structure in practical application, a method of optimizing magnetic coupling structure in finite size space is presented. The method considering the working frequency of the coil, structure of coil, the wire spacing, conductor radius and other factors, which based on the transmission efficiency as the optimization objective. The problem of optimal design of coils with limited coil size is solved by means of theoretical and simulation analysis. Finally, according to the optimization design results, we make a set of coils. Then mutual inductance between the transmitting and receiving coils , the AC resistance and self-inductance were tested. The test results are basically the same with theoretical calculation and simulation results, which verify the feasibility of this method