MODEL OF THE TRACTION ASYNCHRONOUS ELECTRIC DRIVE IN THE MODE ELECTRODYNAMIC BRAKING WITH A SCALAR CONTROL SYSTEM
Journal Title: Збірник наукових праць Українського державного університету залізничного транспорту - Year 2018, Vol 177, Issue 11
Abstract
This article is devoted to the problem of traction asynchronous electric drive operation in normal and abnormal conditions in the mode of electrodynamic braking. The proposed simulation model allows us to study the dynamical processes that arise in a traction asynchronous electric drive while driving on sections with different coupling coefficient of wheel pairs with a rail. The simulation model is rather versatile, which allows us to analyze in detail the electromagnetic and electromechanical processes occurring in a frequency controlled driven asynchronous electric drive taking into account changing conditions of rolling stock operation in electrodynamic braking, to evaluate the energy and operational parameters, to investigate the influence of parameters of the frequency converter, traction engine, parameters links of direct current to the nature of the transition processes, using modern methods of mathematics some simulation. As an example, the results of the simulation of a traction asynchronous electric motor with a scalar control law in the mode of electrodynamic braking with stabilization of the voltage in the DC link and the control of the braking effort, depending on the coupling coefficient of the wheel coupling with the rail, are given. The proposed system of protection against excessive slipping and skid wheel pairs can prevent the occurrence of abnormal operating mode of the traction asynchronous electric drive in the mode of traction and electrodynamic braking with a sharp change in the coupling coefficient of the wheel coupling with a rail, to identify the restoration of a satisfactory coupling coefficient and to analyze the need for adjusting the traction and braking torque of the traction asynchronous electric motor depending on the condition of the surface of the rails.
Authors and Affiliations
S. I. Yatsko, Yaroslav Vashchenko, Anatolii Sydorenko
Keywords
Related Articles
- EP ID EP357366
- DOI 10.18664/1994-7852.177.2018.136575
- Views 53
- Downloads 0
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