SPEED CONTROL DEVICE OF ELECTRIC ROLLING STOCK Russian patent published in 2017 - IPC B60L9/02 B60L15/08 H02P7/00 

FIELD: physics, control and alarm system.

SUBSTANCE: invention relates to the electric traction systems of the vehicles powered by the external energy source. The speed control device of the electric rolling stock includes traction DC motors, armature windings (1) - (4) and field windings (11), (12), (15), (16), contactors (6), (7) (8), (17), (19), (23), (26), (27), a switching converter (10), brake switch contacts (24), (29), thyristors (14), (22) GTO-thyristors (18), (20), (21), diodes (9), (13), (25), (28), a reactor (30), a snap action switch (31) and a resistor (32). The switching converter (10) is between the armature coils (1) - (4) and field windings (11), (12), (15), (16). The contactor (19) is connected to the first band of the field windings with the first terminal and to the anode of the GTO-thyristor (20), the second group of the field windings, the cathode of the diode (13) and the anode of the thyristor (14) with the second terminal. The cathode of the thyristor (14) is connected to the anode of the diode (13), the first group terminal of the field windings, the GTO-thyristor cathode (18) and the first terminal of the contactor (17). The second terminal of the contactor (17) is connected to the earth.

EFFECT: increase in the number of the speed control modes of the electric rolling stock with the traction and regenerative braking through the use of the additional contactors, the thyristor and the diode.

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