Research on Electromagnetic Characteristics of Oil - based Fe₃O₄ Nanometer Two - phase Magnetic Fluid Transformer

Because of the high thermal conductivity of the nanometer two-phase magnetic fluid, it will be used as a new cooling medium for transformers to solve the problem of limited capacity of the transformer due to the temperature limit. However, the electromagnetic characteristics of the nanometer two-phase magnetic fluid transformer are rarely studied. Therefore, based on the electromagnetic field theory and the magnetic fluid characteristics (oil-based Fe3O4 nanometer two-phase magnetic fluid), the electromagnetic characteristics of the new transformer are analyzed and studied. Taking a 50MVA and 110kV transformer product as an example, calculated and analyzed the changes of internal magnetic field before and after using the nanometer two-phase magnetic fluid cooling material in this paper. By compared and analyzed the metal structures such as iron core, clip and tank and the magnetic field and eddy current field of magnetic fluid, the influence of magnetic fluid on electromagnetic characteristics of transformer is further demonstrated. The calculation and analysis show that the electromagnetic properties of the transformer are obviously changed by using the nanometer two-phase magnetic fluid as the cooling medium. The research can be applied to design of this kind of transformer.