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On the Estimation of the Short-Circuit Impedance of Power Transformers Using Fractional Order Calculus
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Resumo(s)
This paper reports investigation on the estimation of the short circuit
impedance of power transformers, using fractional order calculus to analytically
study the influence of the diffusion phenomena in the windings. The aim is to better
characterize the medium frequency range behavior of leakage inductances of power
transformer models, which include terms to represent the magnetic field diffusion
process in the windings. Comparisons between calculated and measured values are
shown and discussed.