Production of new nanostructures for modification of steels and cast irons

Application of regenerative braking on electric rolling stock

“…The main disadvantages of electric braking are the implementation of the braking effect only by the moving axles of the locomotives, the complication of electrical equipment and the control system for the operation of the power equipment of the electric rolling stock, and an increase in the heating temperature of the TEM windings [7]. Also, an obstacle to the use of recuperation energy in a larger volume can be malfunctions of electrical circuits, the presence of empty and lightweight cars in the head of the train (danger of squeezing out the cars) [11,14,15].…”

Modern methods for diagnosing electric circuits of electric trains

“…Depending on the tasks of diagnosing locomotives, hardware or software tools, built-in or external technical means are used that implement the developed diagnostic algorithm. When researching, developing, and implementing the processes of technical diagnostics of locomotives, another problem is solved, associated with the development and implementation of the control process as a whole [14][15][16][17]. Along with the listed tasks, priority ones are also being solved -the study of the physical properties of objects and their malfunctions, construction of mathematical models of objects and models of faults, analysis of the object model in order to obtain the data necessary for the construction There are the following types of technical diagnostics systems:…”

Diagnostics and reliability of current receivers

“…As can be seen from the table, the largest number of faults is associated with the deformation or breakage of structural elements of current collectors [4]. Reasons for deformation and breakage of pantograph frame structures [5,[13][14][15]: Constructive imperfection of the current collector unit of the pantograph;…”