High-speed train traction force control method and system

Abstract

This invention provides a traction control method for high-speed trains, comprising: acquiring the current operating speed of the train; calculating the maximum traction output capacity and the maximum braking output capacity based on the speed and preset speed-traction force characteristic curves and speed-braking force characteristic curves, respectively; acquiring the handle position requirement and calculating a first output value based on the two maximum output capacities; acquiring traction system operating parameters and performing power limitation calculations to obtain a second output value; when the over-phase condition signal is valid, calculating the over-phase output based on the auxiliary system power consumption and the second output value to obtain a third output value; when the output value changes, controlling the rate of change according to a preset slope to generate a final output command. This invention, through multi-level fusion calculation and slope smoothing control, solves the problems of unsmooth traction / braking force and over-phase impact under multi-mode switching and multi-constraint coupling, achieving safe, comfortable, and stable output control for the train.

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