YN,vd connection transformer constituted railway engine traction cophase supply device

• Main Authors: LIU WEI, MA QINGAN, GUO KAI, ZHANG LIYAN, HE JIANMIN, ZHANG WENLI, YI DONG, GAO SHIPAI, ZHANG LI, LI QUNZHAN, XIE SHAOFENG, YU JUNXIANG
• Format: Patent
• Language: Chinese; English
• Published: 14.05.2008
• Subjects: CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION; SYSTEMS FOR STORING ELECTRIC ENERGY

The utility model relates to a railway locomotive traction cophase supply device formed by YN vd wiring transformer, wherein, the traction transformer is a YN vd wiring three-phase to two-phase balance transformer (T); a rectification inverter (Z) is connected between a line voltage output (b, c) and a phase voltage output (a, x) of the transformer (T), and the line voltage output (b, c) or the phase voltage output (a, x) is used as a power end (V1, V2) of the traction locomotive; meanwhile, a controller of the rectification inverter (Z) is connected with the power end (V1, V2) of the traction locomotive. The utility model has the advantages that cophase supply can be completely realized in railway without phase splitting; power supply voltage in each traction substation section is stable, ensuring high-speed and heavy-load operation of the locomotive; the power supply system of the railway traction load are powered by public grid in a three-phase way, eliminating the influence of the railway traction load on