Highly Efficient 11.1-kW Wireless Power Transfer Utilizing Nanocrystalline Ribbon Cores
Highly Efficient 11.1-kW Wireless Power Transfer Utilizing Nanocrystalline Ribbon Cores
复制标题
DOI：
10.1109/tpel.2021.3064902
复制
发表时间：
2021-03
影响因子：
6.7
通讯作者：
Daniel E. Gaona;C. Jiang;T. Long
中科院分区：
文献类型：
--
作者：
Daniel E. Gaona;C. Jiang;T. Long
纳米晶合金由于具有较高的饱和磁通密度和磁导率等上级特性，近年来被认为是铁氧体磁芯的替代品。它们也不那么脆，对温度变化更稳定，并且具有更高的导热性。为了利用这些特性，需要一种专用的设计方法，与铁氧体磁芯所用的方法不同。在这篇文章中，特殊的考虑和方法的纳米晶带状核心的设计。一个11.1千瓦的垫的设计和比较具有相同的铁氧体磁芯。结果表明，具有纳米晶带芯的IPT垫在电感和耦合因子方面产生上级磁性能。所提出的设计还实现了更高的效率和功率密度。此外，与铁氧体基焊盘相比，它们表现出较低的漏磁通和对温度变化的上级稳定性。
Nanocrystalline alloys have been recently considered as an alternative to ferrite as the magnetic cores in inductive power transfer systems due to their superior properties such as higher saturation flux density and permeability. They are also less brittle, more stable to temperature variations, and have a higher thermal conductivity. To take advantage of these properties, a dedicated design approach is required, different from the one used for ferrite cores. In this article, special considerations and methods for the design of nanocrystalline ribbon cores are presented. An 11.1-kW pad is designed and compared with one with identical ferrite cores. Results show that IPT pads with nanocrystalline ribbon cores yield superior magnetic performance in terms of inductances and coupling factors. Higher efficiency and power density were also achieved with the proposed design. Furthermore, compared to ferrite-based pads, they showed lower leakage flux and a superior stability to temperature variations.