Browsing by Author "Silva, J. Fernando"
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- Fractional order calculus on the estimation of short-circuit impedance of power transformersPublication . Albert, W. Malpica; Silva, J. Fernando; Tenreiro Machado, J. A.; Barros, M. T. CorreiaThis paper reports investigation on the use of fractional order calculus to analytically estimate the inlfuence of skin and proximity effects in the short circuit impedance of power transformers. 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 windigns. Comparisons between calculated and measured values are shown and discussed.
- On the Estimation of the Short-Circuit Impedance of Power Transformers Using Fractional Order CalculusPublication . Silva, J. Fernando; Albert, W. Malpica; Machado, J. A. Tenreiro; Barros, M. T. Correia deThis 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.