Analisys of a belt conveyor start-up with a frequency-controlled drive

Abstract

Based on the belt conveyor motion model, the influence of the settings of modern
frequency-controlled drives on the characteristics during a conveyor start-up has been investigated.
The mechanical part of the mathematical model describes the motion of many reduced masses and
moments of inertia of the conveyor. In the calculations, the dynamic mechanical characteristic of
the asynchronous electric motor of the belt conveyor has been used. All the results obtained in the
paper have been found by numerical integration of a system of nonlinear differential equations.
A series of computational experiments have been carried out in which the characteristics and
duration of the frequency rise of the drive motor served as independent factors. Evaluation of the
start-up of the conveyor has been performed using a set of indicators: the RMS value and the
multiplicity of the maximum values of the dynamic and energy characteristics. In work on the basis
of the performed comparative analysis, rational settings of frequency-controlled conveyor drives are
established which provide a significant reduction in unwanted indications during its start-up.
Directions for further research are given.