Analysis of magnetic field and loss of the large disintegration transformer

This paper presents a 2D field-circuit coupled research method considering nonlinear anisotropic of ferromagnetic material to calculate nonlinear anisotropic lamination core magnetic field, no-load current and no-load loss of large three-phase five-column disintegration and non-disintegration transformer in sinusoidal excitation. Comparison the calculation results and measurement results of exciting current and no-load loss verifies the correctness of this calculation method. The research of this method provides a reliable basis for this kind of transformer on the premise of engineering calculation accuracy.