| 摘要 |
FIELD: railway transport. ^ SUBSTANCE: invention can be used I vehicles with dc traction motors. Proposed device to prevent skidding contains series-connected supply source, armature winding of first and second dc traction motors, field windings of first and second dc traction motors, and ground. Cathode of thyristor is connected to common terminal of armature winding of second dc traction motor, and first winding of first dc traction motor. Skidding check unit, resistor, capacitor and voltage-stabilizing diode are introduced additionally. Anode of thyristor is connected with cathode of voltage-stabilizing diode and common terminal of resistor and capacitor. Free lead of resistor and first input of skidding check unit are connected to common terminal of supply source and armature winding of first dc traction motor. Second input is connected with common terminal of armature windings of first and second dc traction motors. Third input of skidding check unit is connected to common terminal of armature winding of second dc traction motor and field winding of first dc traction motor. Output of skidding check unit is connected with thyristor control electrode. Free lead of capacitor and anode of voltage-stabilizing diode are connected to ground. ^ EFFECT: improved reliability and reduced energy consumption. ^ 1 dwg |
