Analytical study of starting current of the induction motor stator

Estimating the Probability of the Emergency Operation of the Quarry Electric Locomotive Traction Electric Drive

“…During the slippage the load is distributed irregularly between the traction motors. Motors with a higher load overheat and quickly fail also due to the presence of low-quality electricity in the contact network [8][9][10][11][12][13][14]. Motors are repaired at specialized repair enterprises allowing the following deviation of the output parameters according to the GOST state standard: the armature winding -10% and the excitation winding -2% [11][12][13][14][15][16][17][18].…”

“…Admissible 10% deviation of the armature winding parameters in repaired traction motors is determined according to heat condition [7,8,9,10,[13][14][15] and, if forced ventilation of the motors is available, allows long-term operation. However, it should be taken into consideration that an electric locomotive is equipped with 12 traction motors that are not especially selected for the operation in a multi-motor electric drive system as they are motors of the same type.…”