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The Internal Impedance of Traction Rails for DC Railways in the 1–100 kHz Frequency Range

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3 Author(s)
Filippone, F. ; Dipt. di Ingegneria Elettrica, Universita di Genova ; Mariscotti, A. ; Pozzobon, P.

The electrical behavior of the sample steel traction rails is analyzed, considering the resistance and internal inductance. Measurements are performed on a sample rail with a circulation of audiofrequency current (with frequency regulated on a wide frequency interval range of 1-100 kHz) superimposed on a dc supply current. The results complete the other measurement results obtained with a 50-Hz bias current; the resistance values are 30%-50% smaller, whereas the internal inductance is almost similar

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Instrumentation and Measurement, IEEE Transactions on  (Volume:55 ,  Issue: 5 )