SPEED REGULATION DEVICE FOR ELECTRIC ROLLING STOCK Russian patent published in 2017 - IPC B60L9/02 B60L15/08 B60L7/22 H02P7/00 

FIELD: electricity.

SUBSTANCE: speed control device includes the armature winding and the DC motor traction excitation winding, a static exciter, a series-connected short-circuit resistor shunted by a high-speed switch, and a reactor, two contactors, a diode, and three controlled semiconductor key elements. The excitation coil is shunted in the opposite direction by a fully controlled semiconductor key element. The control device further comprises a second resistor shunted by a fully controllable semiconductor key element. The resistor is connected to the other terminal of the second contactor and to the second lead of the armature winding and to the anode of the diode. The diode cathode is connected to the common junction point of the susceptor and the first input of the static exciter.

EFFECT: increasing the energy efficiency of regenerative-rheostat inhibition.

1 dwg