METHOD FOR CONTROL OF TRACTION INDUCTIVE ELECTRIC DRIVE TORQUE Russian patent published in 2008 - IPC H02P8/14 

FIELD: electrical engineering, applicable in electric rolling stock for control of inductive electric motors, in particular, traction thyratroninductive motors.

SUBSTANCE: in the method for torque control, depending on the sign of the difference between the preset and mean torque values, the value of torque at the output of the intensity set-point device is changed. The pulse length of the supply voltage depending on the torque value is determined, and the pulse at the phase winding is formed, whose beginning and end are determined in accordance with the angle of turn of the inductive motor rotor.

EFFECT: improved antislippage properties of the traction inductive electric drive due to enhanced flatness of traction characteristics and the mean value of the motor torque, as well as due to formation of the necessary length and orientation of the voltage pulse at the motor phase winding.

2 cl, 3 dwg