A Practical Approach to Determine Lumped‐Element Parameters From a Finite‐Element Three‐Phase Transformer Model

ABSTRACT This contribution presents a practical approach for determining the parameters of a topological lumped‐element (LE) three‐phase transformer model in a shell‐type configuration from a two‐dimensional finite‐element (FE) simulation. Based on the observations of the magnetic flux density from the FE simulation around the coils, we propose a manual fitting of the LE primary current signals to those from the FE simulation by adjusting the leakage parameters of the LE model. This straightforward fitting is possible because the LE leakage parameters influence specific time sections of the primary current signal shape almost independently of each other. The no‐load and short‐circuit cases are considered for the practical fitting procedure, implying that load cases are also captured, in contrast to merely using a no‐load fitting technique. The applicability and the limitations are discussed, and the results are finally concluded.