Modeling soft start of belt conveyor induction motor

The study aims at justification of soft start of conveyor belt. A straightforward start of a loaded conveyor entails the increased inertia and overload of pull chains and drives. The excessive takeaway moment can induce slipping between the belt and driving drum, vibrations of the empty belt branch and frictional sliding of drive. This results in the belt wear and failure of the equipment. The belt conveyor studies used a finite-dimensional model in the problem space. This article describes the SimPowerToolbox and Simulink modeling of soft start of a short-circuited induction motor and a thyristor-motor drive. The modeling results allow comparing the two types of the belt start. The soft start reduces in-rush current, eliminates jerks in power transmission, saves power and protects the equipment. The soft start involves a longer running-in of the conveyor but the concentrated masses move smoother and with a little vibration, the forces in the belt change gently, and pulling gets stabilized without readjustment. The developed model enables analyzing the dynamic behavior of the motor and mechanisms of the conveyor, forces in the belt, the belt sliding and pulling ratio. The results of this research can be used in the belt tension and pulling control in the starting and breaking conditions, to avoid frictional sliding of the motor and slipping of the belt when adjusting the belt velocity subject to the volume of random load flow on the conveyor.

Keywords: belt conveyor, induction motor with short-circuited rotor, integrated mathematical belt conveyor–induction motor model, straightforward start, soft start device, thyristor converter, discrete phase control, dynamic forces in belt, conveyor pulling ratio.
For citation:

Dmitrieva V. V., Sobyanin A. A., Sizin P. E. Modeling soft start of belt conveyor induction motor. MIAB. Mining Inf. Anal. Bull. 2022;(6):77-92. [In Russ]. DOI: 10.25018/0236_1493_2022_6_0_77.

Issue number: 6
Year: 2022
Page number: 77-92
ISBN: 0236-1493
UDK: 621.313.334
DOI: 10.25018/0236_1493_2022_6_0_77
Article receipt date: 01.12.2021
Date of review receipt: 05.04.2022
Date of the editorial board′s decision on the article′s publishing: 10.05.2022
About authors:

V.V. Dmitrieva1, Cand. Sci. (Eng.), Assistant Professor, e-mail:,
A.A. Sobyanin1, Master’s Degree Student, e-mail:,
P.E. Sizin, Cand. Sci. (Phys. Mathem.), Assistant Professor, e-mail:, Institute of Basic Education, National University of Science and Technology «MISiS», 119049, Moscow, Russia,
1 Gubkin Russian State University of Oil and Gas (National Research University), 119991, Moscow, Russia.


For contacts:

P.E. Sizin, e-mail:


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