Analysis of Magnetic Characteristics and Finite Element Modelling of Ferrite and Nanocrystalline Toroidal Cores

Hetong Wang; Xian Zhang; Wenle Song; Lei Wang; Chengyu Liu; Fuyao Yang; Zhongyu Dai

doi:10.1049/ema3.70042

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Analysis of Magnetic Characteristics and Finite Element Modelling of Ferrite and Nanocrystalline Toroidal Cores

更新时间：2026-09-24

- Analysis of Magnetic Characteristics and Finite Element Modelling of Ferrite and Nanocrystalline Toroidal Cores
- Analysis of Magnetic Characteristics and Finite Element Modelling of Ferrite and Nanocrystalline Toroidal Cores
- Electrical Materials and Applications 2026年3卷第1期
- 作者机构：
  
  1. State Key Laboratory of Smart Power Distribution Equipment and System, Hebei University of Technology,Tianjin,China
  2. Contribution: Formal analysis, Investigation, Writing - original draft, Writing - review & editing, Validation
  3. Contribution: Funding acquisition, Supervision
  4. State Grid Cangzhou Electric Supply Company,Hebei,Cangzhou,China
  5. Contribution: Data curation, Formal analysis
  6. Contribution: Software, Resources
  7. State Key Laboratory of Advanced Power Transmission Technology, China Electric Power Research Institute Co. LTD,Beijing,China
  8. Contribution: Visualization, Investigation
  9. Contribution: Project administration, Validation
  10. Contribution: Resources, Supervision
- 作者简介：
- 基金信息：
- DOI：10.1049/ema3.70042
  中图分类号：
- 纸质出版：2026
- 稿件说明：
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Hetong Wang, Xian Zhang, Wenle Song, 等. Analysis of Magnetic Characteristics and Finite Element Modelling of Ferrite and Nanocrystalline Toroidal Cores[J]. Electrical Materials and Applications, 2026,3(1).

Hetong Wang, Xian Zhang, Wenle Song, et al. Analysis of Magnetic Characteristics and Finite Element Modelling of Ferrite and Nanocrystalline Toroidal Cores[J]. Electrical Materials and Applications, 2026, 3(1).
Hetong Wang, Xian Zhang, Wenle Song, 等. Analysis of Magnetic Characteristics and Finite Element Modelling of Ferrite and Nanocrystalline Toroidal Cores[J]. Electrical Materials and Applications, 2026,3(1). DOI： 10.1049/ema3.70042.

Hetong Wang, Xian Zhang, Wenle Song, et al. Analysis of Magnetic Characteristics and Finite Element Modelling of Ferrite and Nanocrystalline Toroidal Cores[J]. Electrical Materials and Applications, 2026, 3(1). DOI： 10.1049/ema3.70042.

摘要

High-frequency transformers provide galvanic isolation and voltage transformation in power electronic systems

and their performance—especially loss and power density—is strongly influenced by the core material. In this study

PC40 ferrite and 1K107B nanocrystalline toroidal cores are selected for investigation. An experimental platform is built to characterise their magnetic and loss properties at 10 kHz. Using the measured magnetization curves and actual core dimensions

3D finite element models of transformers with the two toroidal cores are developed. The magnetic flux density and loss density distributions are simulated and analysed

and the calculated core losses are compared with experimental results. The relative mean errors for both cores are within 15%

verifying the model's accuracy. The results show that the model can reliably predict core loss and provides guidance for the design and analysis of high-frequency transformers.

Abstract

High-frequency transformers provide galvanic isolation and voltage transformation in power electronic systems

and their performance—especially loss and power density—is strongly influenced by the core material. In this study

3D finite element models of transformers with the two toroidal cores are developed. The magnetic flux density and loss density distributions are simulated and analysed

and the calculated core losses are compared with experimental results. The relative mean errors for both cores are within 15%

verifying the model's accuracy. The results show that the model can reliably predict core loss and provides guidance for the design and analysis of high-frequency transformers.

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