REDUCTION OF THE INRUSH CURRENT IN AN ELECTRICAL TRANSFORMER USING THE VOLTAGE DOWN-CHIRP TECHNIQUE
Keywords:
Inrush current, transformer, down-chirp techniquesAbstract
This study aims to examine the reduction of the inrush current on a single-phase transformer when there is no power transmission by using the voltage down-chirp technique. The transformer is initially pressured with a frequency higher than the frequency range. Then, such frequencies are downgraded to equal the frequency range of the transformer in a short span of time, resulting in the reduced size of the magnetic flux on the magnetic axis and line of the transformer. The design of the process and simulation rely on MATLAB Simulink software. The results of the stimulation of the 1200 VA transformer showed that the inrush current was reduced when the default frequency of the voltage is equal to 90Hz.
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