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Modeling of Dual-Phase Composite Magnetic Material and Its Application in Transformers

Author

Listed:
  • Yang Liu

    (State Key Laboratory of Advanced Power Transmission Technology, Beijing 102209, China
    State Grid Smart Grid Research Institute Co., Ltd., Beijing 102209, China)

  • Fuyao Yang

    (State Key Laboratory of Advanced Power Transmission Technology, Beijing 102209, China
    State Grid Smart Grid Research Institute Co., Ltd., Beijing 102209, China)

  • Yu Han

    (State Key Laboratory of Advanced Power Transmission Technology, Beijing 102209, China
    State Grid Smart Grid Research Institute Co., Ltd., Beijing 102209, China)

  • Jie Gao

    (State Key Laboratory of Advanced Power Transmission Technology, Beijing 102209, China
    State Grid Smart Grid Research Institute Co., Ltd., Beijing 102209, China)

  • Dezhi Chen

    (School of Electrical Engineering, Shenyang University of Technology, Shenyang 110870, China)

  • Haonan Bai

    (School of Electrical Engineering, Shenyang University of Technology, Shenyang 110870, China)

Abstract

Dual-phase composite magnetic materials have magnetic and permanent magnetic properties. They can realize the dual-phase conversion of soft magnetic and permanent magnetic composites with a small amount of excitation energy. They have the advantages of good control and conversion characteristics and save energy, and they have a wide range of application scenarios in regard to power equipment. In this paper, the magnetization modeling of dual-phase composite magnetic materials is carried out based on micromagnetic theory, and a specific mathematical expression is given. Secondly, the preparation process of the dual-phase composite magnetic material is studied, the dual-phase composite magnetic material is prepared, and the demagnetization curve of the dual-phase composite magnetic material is measured. Finally, the application of dual-phase composite magnetic materials in power equipment is carried out. Using the soft magnetic and permanent magnetic characteristics of dual-phase composite magnetic materials, their impact on DC bias suppression in transformers is assessed. Magnetic circuit reluctance theory is used to develop the structure and electromagnetic design of a transformer. A transformer prototype with DC bias suppression ability based on dual-phase composite magnetic materials is manufactured, and simulation and experimental research are carried out. The simulation and experimental results verify the correctness of the proposed scheme. Although this scheme requires a more complex core structure, the energy-saving effect is remarkable without changing the transformer’s neutral grounding. The indicators meet the actual requirements of the project.

Suggested Citation

  • Yang Liu & Fuyao Yang & Yu Han & Jie Gao & Dezhi Chen & Haonan Bai, 2024. "Modeling of Dual-Phase Composite Magnetic Material and Its Application in Transformers," Energies, MDPI, vol. 17(6), pages 1-19, March.
  • Handle: RePEc:gam:jeners:v:17:y:2024:i:6:p:1354-:d:1355463
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