SYSTEM FOR UNINTERRUPTED POWER SUPPLY OF ELECTRIC LOCOMOTIVE Russian patent published in 2021 - IPC H02J3/10 B60L50/53 

FIELD: railway engineering.

SUBSTANCE: invention relates to electrical engineering. The system contains a contact network, a power filter made with the possibility of connecting to a DC contact network, an inverter that converts direct current into three-phase alternating current of a quasi-sinusoidal shape with a transformer output, a control rectifier unit, a voltage monitoring relay with opening contacts that perform the functions of high-voltage switches; a block of separating diodes, a battery, a battery inverter with an additional winding introduced into a three-winding transformer, to the secondary windings of which three-phase consumers of cars are connected. If there is high voltage in the contact network, it passes through a power filter, an inverter, a three-winding transformer and is supplied to all consumers of cars, while the battery is not discharged due to the actions of the diode of the separation diode block. When voltage in the contact network disappears, the diode of the separation diode block opens, the battery begins to discharge to the battery inverter, the winding of which ensures the creation of a magnetic flux in the transformer, and EMF occurs in all the windings of the latter, ensuring the operation of consumers. The voltage monitoring relay turns off the main inverter and the voltage of the primary winding is supplied to a rectifier designed for the entire power of the device, the rectified voltage is supplied to the power filter and the voltage on the contact network is restored, thereby the consumers of the electric locomotive and cars are provided with electric energy continuously.

EFFECT: technical result is the provision of electric energy for an electric locomotive and electric equipment of electric train cars in motion and during brief stops in the presence of contact network voltage and in its absence.

1 cl, 1 dwg