Modeling of Mutual Coupling Between Planar Inductors in Wireless Power Applications
Modeling of Mutual Coupling Between Planar Inductors in Wireless Power Applications
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DOI：
10.1109/tpel.2013.2253334
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发表时间：
2014-01-01
影响因子：
6.7
通讯作者：
Yue, C. Patrick
中科院分区：
文献类型：
--
作者：
Raju, Salahuddin;Wu, Rongxiang;Yue, C. Patrick
本文提出了两个平面电感器之间互感的紧凑模型，这对于设计和优化无线电力传输系统至关重要。平面电感器的轨道被建模为恒流承载灯丝，各个灯丝之间的互感由诺依曼积分确定。所提出的模型是通过使用级数展开技术求解诺伊曼积分而得出的。该模型可以预测各种轴向和横向位移下的互感。平面电感器之间的互耦合由 3-D 电磁 (EM) 求解器计算，所提出的模型与这些数值结果非常吻合。在印刷电路板 (PCB) 或硅晶圆上制造不同类型的平面电感器。使用这些电感器，可以为植入式生物医学设备和非接触式电池充电系统等应用构建无线电源链路。测量了每种情况的互感，比较表明所提出的模型可以适当地预测互耦。
This paper presents a compact model of mutual inductance between two planar inductors, which is essential to design and optimize a wireless power transmission system. The tracks of the planar inductors are modeled as constant current carrying filaments, and the mutual inductance between individual filaments is determined by Neumann's integral. The proposed model is derived by solving Neumann's integral using a series expansion technique. This model can predict the mutual inductance at various axial and lateral displacements. Mutual coupling between planar inductors is computed by a 3-D electromagnetic (EM) solver, and the proposed model shows good agreement with these numerical results. Different types of planar inductors were fabricated on a printed circuit board (PCB) or silicon wafer. Using these inductors, wireless power links were constructed for applications like implantable biomedical devices and contactless battery charging systems. Mutual inductance was measured for each of the cases, and the comparison shows that the proposed model can predict mutual coupling suitably.