Silicon steel cores, with their excellent high magnetic permeability, stable material performance and mature manufacturing processes, have become the mainstream material for transformer cores. However, with the development of power systems and the increasing complexity of operating environments, requirements for core loss have become increasingly stringent. Therefore, designing core structures with low-loss characteristics and engineering applicability is of great practical significance. Firstly, based on the basic principle of the Epstein frame method, magnetic characteristic models and loss curves for silicon steel wound cores and amorphous wound cores are constructed. Secondly, a silicon steel-amorphous hybrid wound core scheme is proposed, and the optimal scheme is obtained by analyzing the magnetic density characteristics and comparing losses under different material proportions. Finally, finite element simulation is used to verify the vibration displacement suppression effect obtained from the analysis of the proposed optimal hybrid core, and to compare the extent of its improvement over amorphous wound cores.

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Analysis on the Characteristics of Transformer with Hybrid Material 3D Wound Core

  • Hao Li,
  • Zhanyang Yu,
  • Mengyu Zhan,
  • Pengzhe Zhuang,
  • Qixin He

摘要

Silicon steel cores, with their excellent high magnetic permeability, stable material performance and mature manufacturing processes, have become the mainstream material for transformer cores. However, with the development of power systems and the increasing complexity of operating environments, requirements for core loss have become increasingly stringent. Therefore, designing core structures with low-loss characteristics and engineering applicability is of great practical significance. Firstly, based on the basic principle of the Epstein frame method, magnetic characteristic models and loss curves for silicon steel wound cores and amorphous wound cores are constructed. Secondly, a silicon steel-amorphous hybrid wound core scheme is proposed, and the optimal scheme is obtained by analyzing the magnetic density characteristics and comparing losses under different material proportions. Finally, finite element simulation is used to verify the vibration displacement suppression effect obtained from the analysis of the proposed optimal hybrid core, and to compare the extent of its improvement over amorphous wound cores.