Short-Circuit Impedance of Power Transformers: the Fractional Order Calculus Approach

Silva, J. F. Alves da; Albert, W. Malpica; Machado, J. A. Tenreiro; Barros, M. T. Correia de

http://hdl.handle.net/10400.22/7024

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Authors

Silva, J. F. Alves da

Albert, W. Malpica

Machado, J. A. Tenreiro

Barros, M. T. Correia de

Abstract(s)

This paper reports investigation on the modeling of the short circuit impedance of power transformers, using fractional order calculus, analyzing the influence of the diffusion phenomena in the windings. This aims to better characterize the medium frequency range behavior of leakage inductances of power transformer models, which include terms to represent the magnetic field diffusion in the windings. Calculated and measured values are shown and compared.