Development of a complex of diagnostic parameters for assessing the technical state of traction electric motors of rolling stock

The article develops the topical issue of choosing diagnostic parameters to assess the technical condition of the collector profile of traction electric motors of rolling stock. The results of experimental studies of the collector profile after repair and after carrying out acceptance tests for various traction electric motors of mainline locomotives: TL-2K1 (VL-10), EK810Ch (2ES6), ED133 (2TE116U) are presented. The relationship between the calculated parameters for assessing the reservoir profile using the mathematical apparatus of correlation analysis with a ranking on the Chaddock scale is revealed. A different degree of relationship has been established between the diagnostic parameters that characterize the state of the traction motor collector profile, while most of the known diagnostic parameters have a pronounced correlation with each other. A variety of diagnostic parameters are considered, which can be described by generalized parameters characterizing the reservoir profile. It is concluded that it is possible to use identical diagnostic parameters to assess the surface condition of the traction motor collector at various stages of repair and maintenance. On the basis of the studies carried out, diagnostic parameters have been identified that have diagnostic value and are not related to each other by correlations.