DEVICE FOR RHEOSTATLESS STARTING OF DIRECT CURRENT ELECTRIFIED ROLLING STOCK

摘要

The invention relates to the field of transport, in particular, to electric traction electric drives of electric rolling stock with pulse voltage regulation of electric motors. The purpose of the invention is to reduce the overall dimensions by reducing the power of the converter. The device contains a converter 1 of a constant 14 current into an alternating current, to the output of which is connected an input of bridge output 2. A gate 2 is connected in series to output 2 of a connector 2, traction motors 4 of the first group, separation diode 5, traction motors 6 of the second group and separation diode 7. Converter 1, rectifier 2 and traction motors 4 and 6 are connected to a direct current source by current collectors 8 and 9 and contactors 10, 11, 12, 13 and 14. At the beginning of the start, a contactor 10 is turned on. 1 is adjusted from zero to the voltage of the contact network. Then the contactor 11 is turned on, the converter is turned on in series with the source. The voltage of the converter is again adjusted from zero to the voltage of the contact network. The power of the converter remains constant when the power supplied to the electric motors is doubled. 1 il. Q (L with about with 4 JV CO