AUTOMATED ANTISLIPPING PROTECTIVE DEVICE FOR ELECTRIC STOCK WHEEL SETS Russian patent published in 2015 - IPC B60L3/10 B61C15/08 B61C15/14 B61C15/10 

FIELD: electricity.

SUBSTANCE: invention is referred to electric equipment of eclectic stock. The device comprises electric stock (ES) control system, wheel set (WS) frequency sensors connected to WS rotation frequency unit, traction electric motors (TEM) - two motors for each of two bogies, sand feeder control unit, TEM winding voltage regulator made with four levels of voltage regulation, reversible converter (RC) installed at each bogie for its two TEMs, each of them equipped with two contactors. ES control system consists of microprocessor unit (MCU), contactor control unit, sand feeder control unit, at that output of WS rotation frequency unit is connected to the first MCU input, which input-output is connected to input-output of contactors control unit, the first MCU output is connected to RC inputs of each bogie while the second MCU output is connected to input of the sand feeder control unit, the third output is connected to input of TEM winding voltage regulator. RC is connected by two circuits to windings of the first and second traction electric motor of the bogie respectively. RC outputs of two bogies are connected to the second MCU input; contactors control unit has four pair of outputs, each of them is intended for closure or opening of the first and second TEM contactors.

EFFECT: reduced consumption of sand and saving of electric energy feeding traction electric motors.

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