FIELD: converter equipment us a voltage step-up converter, in particular, used as an input converter of the traction electric drive of the alternating current electric locomotives.
SUBSTANCE: the converter power factor is enhanced due to the fact that the input current attains the required value in all conversion intervals, in this case, at low values of the supply voltage and when the input current does not attain the required value in the prevision conversion interval, the current in the next interval is formed by the sum of the input and output voltages.
EFFECT: enhanced technical-and-operating indices of the electric locomotive.
5 dwg
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