Low-Loss Soft Magnetic Materials and Their Application in Power Conversion: Progress and Perspective

Weiwang Wang (), Jiaqi Fan, Changshen Li, Yue Yu, Anding Wang, Shengtao Li and Jinjun Liu
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Weiwang Wang: State Key Laboratory of Electric Insulation and Power Equipment, Xi’an Jiaotong University, Xi’an 710049, China
Jiaqi Fan: State Key Laboratory of Electric Insulation and Power Equipment, Xi’an Jiaotong University, Xi’an 710049, China
Changshen Li: State Key Laboratory of Electric Insulation and Power Equipment, Xi’an Jiaotong University, Xi’an 710049, China
Yue Yu: State Key Laboratory of Electric Insulation and Power Equipment, Xi’an Jiaotong University, Xi’an 710049, China
Anding Wang: Research Institute of Interdisciplinary Science, Dongguan University of Technology, Dongguan 523808, China
Shengtao Li: State Key Laboratory of Electric Insulation and Power Equipment, Xi’an Jiaotong University, Xi’an 710049, China
Jinjun Liu: State Key Laboratory of Electric Insulation and Power Equipment, Xi’an Jiaotong University, Xi’an 710049, China

Energies, 2025, vol. 18, issue 3, 1-31

Abstract: Amorphous and nanocrystalline alloys, as novel soft magnetic materials, can enable high efficiency in a wide range of power conversion techniques. Their wide application requires a thorough understanding of the fundamental material mechanisms, typical characteristics, device design, and applications. The first part of this review briefly overviews the development of amorphous and nanocrystalline alloys, including the structures of soft magnetic composites (SMCs), the key performance, and the underlying property-structure correction mechanisms. The second part discusses three kinds of high-power conversion applications of amorphous and nanocrystalline alloys, such as power electronics transformers (PETs), high-power inductors, and high-power electric motors. Further detailed analysis of these materials and applications are reviewed. Finally, some critical issues and future challenges for material tailoring, device design, and power conversion application are also highlighted.

Keywords: soft magnetic material; amorphous alloy; nanocrystalline alloy; power conversion; transformer; inductor; electric motor; power loss (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2025
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