ENERGY BALANCE DURING FREIGHT ELECTRIC LOCOMOTIVE OPERATION

Abstract

The purpose of this work consists in obtaining power indices of a freight electric locomotive at the specified schedule of motion, but at different laws of speed changes and on different track profiles. CAD methods are used, at that, the further comparison of the results obtained with the records of the locomotive crew recorder has shown an actually complete coincidence. As expected, a minimum work performed for a train hauling is achieved in an ideal case – at the motion without stops at a constant speed on a straight horizontal track. When moving along an actual profiled track a work performed for hauling changes by a difference of potential energy of gravity in the initial and end points. Often accelerations and slowdowns result in the work increase for hauling, for that there are obtained quantity values. In order to avoid excess power waste it is necessary to move possibly without sharp accelerations and hard braking. To support motion uniformity it is expedient to use a speed controller. There are obtained the values of a specific work for train hauling in different cases which define limits for a purpose index on the