ROLLING STOCK SYSTEM AND METHOD OF ITS CONTROL Russian patent published in 2013 - IPC B60L9/12 

FIELD: transport.

SUBSTANCE: invention relates to electrified railway vehicle and aims at perfecting rolling stock power supply system. Proposed system comprises electric locomotive with current collector 101 to be connected with overhead line contact wire. Detector 161 detects overhead line wire voltage and phase. Power is fed from accumulator 150 to auxiliary winding 112 via power converter 141 so that power transformer primary 110 has the same voltage and phase as overhead line wire for reverse excitation of transformer 110. When power transformer voltage has the same phase as overhead line wire 101, interrupter 162 operates to lift current collector to connect wire 200 and power transformer 110, hence, ruled out is excitation current surge to power transformer 110.

EFFECT: higher reliability.

19 cl, 7 dwg