Modeling of the traction electric drive of a diesel train taking into account the use of a rubber-cord coupling during wheelset slippage

Abstract

The issues of development and research of models for the AC electric drive of a diesel train are considered. A review of literary sources on the specified topic and an analysis of existing approaches to solving problems related to the development of control systems that ensure increased efficiency of the electric drive under operating conditions, including possible wheelset slippage, are conducted. Both generally accepted approaches to studying the processes of wheelset slippage through modeling and proposed approaches are examined. Computer components of the electromechanical system of the diesel train have been developed, taking into account elastic connections under the condition of ensuring quality indicators of the control system in its elements during slippage, as well as a model describing the possible slippage process. The presented models can be used to study the automatic regulation system of the electric transmission and to clarify its parameters, as well as to determine the parameters of the rubber-cord coupling (RCC) and subsequently implement them in the form of corresponding computer components of the diesel train control system. The proposed model has been investigated both in terms of its adequacy and its applicability for the development of a control system that ensures the efficiency of the electric drive with RCC during slippage. The research results are presented in the form of graphs of processes of characteristic phase variables and tables containing numerical values of characteristic variables of the control system depending on control signals.