I. Introduction
Quantitative parameters for controlling the movement of a train along railway tracks related with the physical traction force of locomotives [1], implemented in accordance with the specified traction function [2]. Imperfect of rail tracks [3], unstable environment, torque redistribution on wheel sets when turning, uphill or downhill [4]–[6] leads to wheel sets slippage along the rail and the slipping occurrence of, leads to wear of the rails and wheels bandages [7], which increases the power consumption of the electric locomotive. The industrial shunting electric locomotive NPM2 [8], [9] developed by the Novocherkassk Electric Locomotive Plant specifically for use at the production site of PJSC Magnitogorsk Metallurgical Plant quipped by adjustable AC traction electric drives designed according to the FC-AM system [10] with an automatic control system based on microprocessor controllers [11], the new algorithms of which [12], [13] will make it possible to effectively use slipping in controlling the speed modes of wheel sets and the entire electric locomotive as a whole.