Unveiling the Microworld Inside Magnetic Materials via Circuit Models

IF 2.6 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC IEEE Power Electronics Magazine Pub Date : 2023-09-01 DOI:10.1109/mpel.2023.3301408

Han Helen Cui, Saurav Dulal, Sadia Binte Sohid, Gong Gu, Leon M. Tolbert

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Abstract

The progress made in wide bandgap (WBG) semiconductors has resulted in rapid miniaturization and increased efficiency of power converters. However, the improvements in magnetic components, such as inductors and transformers, have not kept pace with these advancements [1] , [2] , [3] . Although advances in WBG devices, novel topologies, control schemes, and hardware fabrications have greatly improved circuit efficiency and power density, the bottleneck now lies with magnetic components [4] , with magnetics accounting for more than 30% of the cost and more than 30% of the loss in almost all power converters [5] . Magnetics design has become a critical issue for power electronics as trends towards high efficiency and high power-density.

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通过电路模型揭示磁性材料内部的微观世界

宽禁带半导体技术的发展使功率变换器的小型化速度加快，效率提高。然而，磁性元件的改进，如电感器和变压器，并没有跟上这些进步的步伐[1]，[2]，[3]。尽管WBG器件的进步、新颖的拓扑结构、控制方案和硬件制造大大提高了电路效率和功率密度，但目前的瓶颈在于磁性元件[4]，几乎所有功率变换器中，磁性元件占成本的30%以上，损耗的30%以上[5]。随着高效率和高功率密度的发展，磁性设计已成为电力电子的关键问题。

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