dc.contributor.author |
Numbi, B.P. (Bubele Papy)
|
|
dc.contributor.author |
Zhang, Jiang
|
|
dc.contributor.author |
Xia, Xiaohua
|
|
dc.date.accessioned |
2014-10-07T09:11:07Z |
|
dc.date.available |
2014-10-07T09:11:07Z |
|
dc.date.issued |
2014-04 |
|
dc.description.abstract |
This paper develops two optimal control models for the energy management of a mining crushing
process based on jaw crushers. The performance index for both models is defined as the energy cost to be
minimized by accounting for the time-of-use electricity tariff. The first model is referred to as a variable
load-based optimal control with the feeder speed and closed-side setting of the jaw crusher as control
variables. The second model is the optimal switching control. From the simulation results, it is
demonstrated that there is a potential of reducing the energy cost and energy consumption associated
with the operation of jaw crushing stations in deep mines while meeting technical and operational
constraints. Due to the inefficiency of the jaw crushing machine, whose no-load power consumption is
between 40 and 50% of its rated power, the optimal switching control technique is shown to be a better
candidate in reducing both energy cost and consumption of the jaw crushing station. The benefit of
having an ore pass with a big storage capacity is shown to be of great importance in achieving more
energy cost reduction of the primary jaw crushing station while improving the switching frequency
profile associated with the switching controller. |
en_US |
dc.description.librarian |
hb2014 |
en_US |
dc.description.sponsorship |
National Research Foundation (NRF) of South Africa grant number 88744, National Hub for Energy Efficiency and Demand Side Management (EEDSM). |
en_US |
dc.description.uri |
http://www.elsevier.com/locate/energy |
en_US |
dc.identifier.citation |
Numbi, BP, Zhang, J & Xia, X 2014, 'Optimal energy management for a jaw crushing process in deep mines', Energy, vol. 68, pp. 337-348. |
en_US |
dc.identifier.issn |
0360-5442 (print) |
|
dc.identifier.issn |
1873-6785 (online) |
|
dc.identifier.other |
10.1016/j.energy.2014.02.100 |
|
dc.identifier.uri |
http://hdl.handle.net/2263/42263 |
|
dc.language.iso |
en |
en_US |
dc.publisher |
Elsevier |
en_US |
dc.rights |
© 2014 Elsevier Ltd. All rights reserved. Notice : this is the author’s version of a work that was accepted for publication in Energy. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Energy, vol. 68, pp. 337-348, 2014. doi : 10.1016/j.energy.2014.02.100. |
en_US |
dc.subject |
Energy management |
en_US |
dc.subject |
Optimal control |
en_US |
dc.subject |
Deep mines |
en_US |
dc.subject |
Jaw crushing process |
en_US |
dc.subject |
Time-of-use tariff |
en_US |
dc.title |
Optimal energy management for a jaw crushing process in deep mines |
en_US |
dc.type |
Postprint Article |
en_US |