Omelchenko E.Ya., Tanich V.O., Lymar A.B. Slipping Process of Four-Axle Shunting Electric Locomotive with Inverter Powered Asynchronous Traction Electric Drive

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Abstract

For a four-axle shunting electric locomotive, a mathematical description of the wheel set slipping process is made in the case of using the electric drive system "frequency converter - asynchronous motor". The relevance of the work lies in the possibility of using a computer model in the development and study of the asynchronous motor operation processes for the traction electric drive of an electric locomotive in various operating modes. The purpose of the article is to study transient slipping processes on a dynamic computer model of a traction asynchronous electric drive using the FC-AD system for a four-axle electric locomotive. The mathematical modeling methods in the Matlab Simulink environment, the basic provisions of physics, theoretical mechanics, the electric drive theory, electric machines theory, the theory of electric drive control systems, as well as a dynamic computer model of an asynchronous electric drive are used. The NPM2 industrial shunting electric locomotive developed by the Novocherkassk Electric Locomotive Plant specifically for use at the production site of PJSC MMK was taken as the basis for creating the model. The developed computer model of the electric drive is tuned to the specific parameters of the traction motors, it allows you to calculate transients in the FC-IM system taking into account the choice of gaps in the coupling and slipping. The article gives a brief description of the wheel set slipping processes, describes the main types of these processes according to the conditions of the occurrence, developed differential equations of motion during slipping and structural diagrams of mathematical models that take into account the operation of the traction electric drive taking into account various control systems and slipping of a four-axle electric locomotive. The research group carried out assessment of transient processes for selected gaps of coupling devices along the entire train length, conditions for stable slipping are obtained, conclusions are made about the feasibility of introducing a linear speed sensor into the automatic control system of locomotive electric drives.

Keywords

four-axle electric locomotive, slipping, shunting locomotive, wheel set, traction electric drive, traction force, slippage, adhesion force, wheel-rail system, frequency converter, asynchronous motor, computer model, control systems

Evgeniy Ya. Omelchenko D.Sc. (Engineering), Professor, Department of Automated Electric Drive and Mechatronics, Nosov Magnitogorsk State Technical University, Magnitogorsk, Russia, This email address is being protected from spambots. You need JavaScript enabled to view it.

Vasiliy O. Tanich Associate Professor (Engineering), Department of Automated Electric Drive and Mechatronics, Nosov Magnitogorsk State Technical University, Magnitogorsk, Russia,This email address is being protected from spambots. You need JavaScript enabled to view it., https://orcid.org/0000-0003-0098-6431

Alexey B. Lymar Assistant Professor, Department of Automated Electric Drive and Mechatronics, Nosov Magnitogorsk State Technical University, Magnitogorsk, Russia, This email address is being protected from spambots. You need JavaScript enabled to view it., https://orcid.org/0000-0003-2783-3662

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Omelchenko E.Ya., Tanich V.O., Lymar A.B. Slipping Process of Four-Axle Shunting Electric Locomotive with Inverter Powered Asynchronous Traction Electric Drive. Elektrotekhnicheskie sistemy i kompleksy [Electrotechnical Systems and Complexes], 2022, no. 3(56), pp. 28-35. (In Russian). https://doi.org/10.18503/2311-8318-2022-3(56)-28-35

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