IMPROVING THE INSULATION RELIABILITY OF THE TRACTION ASYNCHRONOUS MOTOR OF A LOCOMOTIVE BY OPTIMIZING ITS DESIGN PARAMETERS

Traction asynchronous electric motors (TAEM) have a key place among locomotive electric drives, ensuring the reliability and efficiency of railway transportation. During TAEM operation, their insulation materials can be exposed to various influences, which lead to aging, degradation and, eventually, to possible emergency situations. In this regard, the assessment of the insulation condition of the rods of the traction asynchronous electric motor of a locomotive with different sections of the rotor windings is an urgent task. A study of the condition of TAEM insulation coatings and the determination of their service life depending on various shapes of the rotor windings based on the method of temperature distribution in the windings is carried out. It is found out that the lowest heating temperatures of the rotor windings are fixed with a trapezoidal section of the stator windings, which results in less wear of TAEM insulating coatings during operation.