ALTERNATING CURRENT ELECTRIC LOCOMOTIVE FAN RPM AUTOMATED CONTROL SYSTEM Russian patent published in 2024 - IPC B60L1/00 B60K25/00 H02P21/02 

FIELD: vehicles.

SUBSTANCE: invention relates to power supply to auxiliary equipment of vehicles. AC electric locomotive fan rpm automated control system with a DC traction motor, in the armature circuit of which a smoothing reactor is included, contains a current sensor connected to the traction motor armature current circuit, first block of contactors connected to electric locomotive power transformer auxiliary winding and to fan drive motor windings, as well as to one of control microprocessor outputs, the second block of contactors is connected by inputs to the second output of the control microprocessor and to the output of the thyristor converter, and by its output – to windings of the fan drive motor. Claimed system also comprises a ventilation sensor located in the fan air duct, a temperature sensor with a galvanic isolation module installed on the smoothing reactor bus, and a setpoint adjuster, connected to the control microprocessor, a voltage sensor connected by its input to the fan drive motor windings, and by the output through the galvanic isolation unit with one of the inputs of the control microprocessor.

EFFECT: increased energy efficiency and reliability of auxiliary electric drive.

1 cl, 1 dwg