Neste trabalho foi obtida uma expressão algébrica que relaciona a permeabilidade magnética de um fio delgado retilíneo ferromagnético, com a força eletromotriz gerada nas suas extremidades pela variação no tempo de uma ...

Neste trabalho foi obtida uma expressão algébrica que relaciona a permeabilidade magnética de um fio delgado retilíneo ferromagnético, com a força eletromotriz gerada nas suas extremidades pela variação no tempo de uma ...

The analysis of the feasibility and economics of amorphous core power transformers for induction heating applications in the field 10-50 kHz is developped. The results obtained on a 25 kHz-150 kVA concentric winding trial ...

In this work it is discussed the performance of the reactive power demand in three-leg transformer core and three-phase transformer bank, under different conditions of AC/DC double excitation. In order to analyse the ...

Assuming that different energy dissipation mechanisms are at work along hysteresis, a hysteresis loss subdivision procedure has been proposed, using the induction at maximum permeability ( around 0.8 T, in electrical steels) ...

This work proposes a methodology for non destructive testing (NDT) of reinforced concrete structures, using superficial magnetic fields and artificial neural networks, in order to identify the size and position of steel ...

This work proposes a methodology for non destructive testing (NDT) of reinforced concrete structures, using superficial magnetic fields and artificial neural networks, in order to identify the size and position of steel ...