Calculation of Load Diagrams and Static Characteristics of Multimotor Electric Drive Systems using the Methods of Equivalent Forces and Reduced Moments
This paper presents the calculations and construction of load diagrams and the static characteristics of individual mechanisms of a mining roadheader, which form a multimotor electric drive system, using the methods of equivalent forces and reduced moments. The productivity of the mine and the r...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Universitas Indonesia
2020-12-01
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| Series: | International Journal of Technology |
| Subjects: | |
| Online Access: | https://ijtech.eng.ui.ac.id/article/view/4541 |
| Summary: | This paper presents the calculations and construction
of load diagrams and the static characteristics of individual mechanisms of a
mining roadheader, which form a multimotor electric drive system, using the
methods of equivalent forces and reduced moments. The productivity of the mine
and the roadheader are calculated. The operating forces of idle and on-load
mechanisms are calculated, and operation time intervals and a complete working
cycle are determined. The load diagrams of mechanisms are constructed and their
kinematic diagrams are designed. Based on the calculations performed,
asynchronous motors with a short-circuit rotor, which have the closest power
values and are suitable in terms of voltage and mode of operation, were
selected from the catalogue. The gear reduction ratio is calculated, static
resistance moments, and operation speeds to the motor shaft are specified. The
static characteristics of the most powerful electric motor of a mining
roadheader – or cutter – are formulated. The high accuracy of the calculations
was confirmed by computer simulation, which showed minimum errors. |
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| ISSN: | 2086-9614 2087-2100 |