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