POWER SUPPLY SYSTEM OF ELECTRIC TRAIN WITH ASYNCHRONOUS TRACTION DRIVE Russian patent published in 2011 - IPC B60L9/16 

FIELD: transport.

SUBSTANCE: invention relates to electrified railway transport and aimed to improvement of electric power supply scheme of electric train with asynchronous traction drive. Electric power supply scheme is used as power supply for non-traction on-board consumers during operation from alternating current overhead system. Energising of low-voltage power consumers and accumulator battery charging of electric train is carried out using half-controlled rectifier and high-frequency inverter where rectifier input can be connected either to additional winding of the main power transformer connected with ~25 kV overhead system or to ~380 V, 50 Hz industrial three-phase system. Using of two-winding and multi-winding high-frequency transformers provides power supply for low-voltage power consumers both from =3 kV direct-current and ~25 V alternating- current high-voltage overhead systems as well as from accumulator battery of =110 V.

EFFECT: decrease in dimensions and weight, higher efficiency and reliability of power supply for on-board consumers.

3 cl, 1 dwg