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This paper sets up a simulating model of single-phase transformer under DC bias in MATLAB. Using MATLAB software, the magnetization characteristic curves and exciting currents under no-load condition are simulated and analyzed. The result shows that the magnetization characteristic curves do not shift up, but they are no longer symmetrical under DC bias. They get saturate at one side of X axis. The...
Based on Jiles-Atherton theory on ferromagnetic hysteresis, an improved single-phase transformer model is presented to analyse the performance of the transformer under DC bias. Programmed using MATLAB, the magnetization characteristics and excitation current are simulated. Then using ANSYS, two-dimension magnetic field of the transformer is calculated. The calculation results show that the flux density...
This paper presents an improved single-phase transformer model to analyse the performance of the transformer under DC bias. By using MATLAB, the magnetization characteristics and excitation current based on Jiles-Atherton theory are simulated. Thus using ANSYS, two-dimension magnetic field of the transformer is calculated. The calculation results show that the leakage flux would increase under DC...
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