Abstract
This study deals with estimation of residual flux in 1 kVA 1-phase transformer. Transformers used in the study have two type core cutting topology. The transformers were modeled with MATLAB software and then simulated to obtained inrush current. Experiments were also done in order to obtain its inrush current with different demagnetization time. The result showed a difference between simulated inrush current result and experimental result, which influenced by the existing residual flux and not yet disappeared during demagnetization process on the core of the single-phase transformer. The result shows that different core cutting topology affects the residual flux as well as the time of demagnetization.
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