METHOD AND DEVICE FOR VOLTAGE STABILIZATION IN POWER SUPPLY SYSTEM OF ASYNCHRONOUS AUXILIARY MACHINES OF ALTERNATING CURRENT ELECTRIC LOCOMOTIVES Russian patent published in 2021 - IPC B60L1/00 B60L9/08 B60L9/24 H02P13/06 H01F29/04 

FIELD: electricity.

SUBSTANCE: inventions group relates to the supply of electricity to auxiliary equipment of vehicles. The method for stabilizing a single-phase voltage in the power supply system of asynchronous auxiliary machines of AC electric locomotives so that it remains within ±1% of the nominal value when the supply voltage of the contact network changes in the range from 25 to 29 kV, consists in the fact that auxiliary circuits are alternately connected machines to the main winding of auxiliaries of a traction transformer with a rated operating voltage and to a section of the same winding with a lower rated operating voltage. The device for implementing the method for stabilizing single-phase voltage in the power supply system of asynchronous auxiliary machines of AC electric locomotives consists of a power unit and a microprocessor control unit.

EFFECT: increasing reliability of the auxiliary machines of AC electric locomotives.

2 cl, 3 dwg