Study of the asynchronous traction drive's operating modes by computer simulation. Part 1: Problem formulation and computer model

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Transport Problems

Silesian University of Technology

Subject: Economics, Transportation, Transportation Science & Technology

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VOLUME 10 , ISSUE 2 (June 2015) > List of articles

Study of the asynchronous traction drive's operating modes by computer simulation. Part 1: Problem formulation and computer model

Pavel KOLPAHCHYAN / Alexander ZARIFYAN Jr

Keywords : electric locomotive, asynchronous traction drive, computer modeling of electro-mechanical processes

Citation Information : Transport Problems. Volume 10, Issue 2, Pages 125-136, DOI: https://doi.org/10.21307/tp-2015-028

License : (CC BY-SA 4.0)

Published Online: 21-April-2017

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In this paper, the problems arising from the design of electric locomotives with asynchronous traction drive (with three-phase AC induction motors) are considered as including the debugging of control algorithms. The electrical circuit provides the individual (by axle) control of traction motors. This allows realizing the operational disconnection/connection of one or more axles in the automatic mode, with account of actual load. In perspective, the evaluation of locomotive's energy efficiency at the realization of various control algorithms must be obtained. Another objective is to research the dynamic processes in various modes of the electric locomotive operation (start and acceleration, traction regime, coasting movement, wheel-slide protection, etc). To solve these problems, a complex computer model based on the representation of AC traction drive as controlled electromechanical system, is developed in Part 1. The description of methods applied in modeling of traction drive elements (traction motors, power converters, control systems), as well as of mechanical part and of "wheel-rail" contact, is given. The control system provides the individual control of the traction motors. Part 2 of the paper focuses on the results of dynamic processes modeling in various modes of electric locomotive operation.  

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