Abstract
A numerical model to calculate the distribution of the magnetization inside a superconducting (SC) bulk, when a time-varying magnetic field is applied, is presented. The model is based on an equivalent magnetic network derived from the magneto-quasistatic form of Maxwell equations and takes into account the SC properties by defining a hysteretic material characteristic. The dynamic electromagnetic behavior of a melt-processed ring-shaped Y-Ba-Cu-O bulk using the pulsed-field magnetization (PFM) process is investigated. The predicted results on the flux trapped in the YBCO bulk by PFM process are compared with the measured ones.
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