Secondary currents filtering by means of a properly sized winding in a multicoil traction transformer for high power applications to limit psophometric Currents


In high power railway traction applications the modulation of traction converters, at low switching carriers, produces harmonic currents in the range of audio frequencies. To ensure correct operation modes of the signalling circuits, the interference magnitudes levels have to be reduced. Psophometric current (p.c.) gives an index of the interference level… (More)


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