REVERSIBLE DIRECT CURRENT DRIVE WITH SEQUENTIAL EXCITATION MOTOR (VERSIONS) Russian patent published in 2009 - IPC H02P1/22 H02P3/14 B60L7/12 B60L15/04 

FIELD: electrics.

SUBSTANCE: electric drive includes contacts of two reverse contactors in armature circuit, adjustable key connecting motor excitation winding over additional low-voltage source and two diodes with armature outputs, two other diodes connected between excitation winding outputs and power source clamp. Another motor power source clamp is connected to one or another low-voltage power source. Contact of additional contactor closed in traction mode and open in recuperate halt braking mode is connected between power source clamp connected to second diode couple and commutation elements of reverse switch.

EFFECT: provisions for recuperate halt braking mode of electric drive.

2 cl, 2 dwg