Choosing the Optimal Power Coils Using Open-Source k-Oriented Design Automation
Choosing the Optimal Power Coils Using Open-Source k-Oriented Design Automation
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DOI：
10.1109/tbcas.2021.3059934
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发表时间：
2021-02-01
影响因子：
5.1
通讯作者：
Kim, Brian N.
中科院分区：
文献类型：
--
作者：
Kim, Chaebin;Nichols, Edward;Kim, Brian N.
无线功率线圈已经在可植入医疗设备中发现了用于安全和可靠的无线功率传输的重要用途。为每个特定应用设计线圈是一个复杂的过程，有许多相互依赖的设计变量;确定每对线圈的最佳设计参数既具有挑战性又耗时。在本文中，我们开发了一种自动化设计方法，平面方形螺旋线圈，根据输入的设计要求，产生理想化的设计参数，最大的功率传输效率。首先通过将电感耦合系数k与其他设计参数隔离来降低计算复杂性。一个简化的，但准确的等效电路模型，然后开发，集肤效应，邻近效应，寄生电容耦合迭代考虑。所提出的方法是在一个开源软件，占输入制造的限制和应用程序的具体要求。通过有限元仿真验证了功率传输效率估计的准确性。使用所提出的方法，线圈设计过程是完全自动化的，可以在几分钟内完成。
Wireless power coils have found important use in implantable medical devices for safe and reliable wireless power transfer. Designing coils for each specific application is a complex process with many interdependent design variables; determining the most optimal design parameters for each pair is challenging and time-consuming. In this paper, we develop an automated design method for planar square-spiral coils that generates the idealized design parameters for maximum power transfer efficiency according to the input design requirements. Computational complexity is first reduced by isolating the inductive coupling coefficient, k, from other design parameters. A simplified but accurate equivalent circuit model is then developed, where skin effect, proximity effect, and parasitic capacitive coupling are iteratively considered. The proposed method is implemented in an open-source software which accounts for the input fabrication limitations and application specific requirements. The accuracy of the estimated power transfer efficiency is validated via finite element method simulation. Using the presented approach, the coil design process is fully automated and can be done in few minutes.