LOCOMOTIVE ELECTRODYNAMIC BRAKE CONTROLLER Russian patent published in 2016 - IPC B60L7/04 B60T8/17 B60L15/20 H02P3/12 

FIELD: machine building.

SUBSTANCE: invention relates to electrodynamic brake systems for vehicles. Locomotive electrodynamic brake controller comprises a chopper consisting of a transistor, which serves to maintain invariable brake force, bypassed by a reverse diode and connected in series by an emitter with a power diode cathode. Herewith the collector and the emitter of chopper transistor are connected via a contactor to the traction motor armature winding. Control inputs of the chopper are connected to the control unit which forms a PWM signal in accordance with the duty ratio value set by the locomotive control system. Data outputs of the control system are connected to the control unit and to the contactor control input. One lead of the damping capacitor is connected to the chopper power diode anode, and the other one is connected to the chopper transistor collector. Braking resistor is connected in parallel to the damping capacitor and via the chopper power diode and the contactor - to the traction motor armature winding.

EFFECT: higher reliability of locomotive electrodynamic brake controller is achieved.

1 cl, 1 dwg