Modeling and Evaluation of Benefits of Trolley Assist System for Mining Trucks

As the exploitation of an open-pit mine is evolving, the depth and therefore the distance traveled by the mine haul trucks increases. As a result, the operational cost of mining operation increases due to the higher consumption of fuel and tires. This work presents the evaluation of the performance...

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Bibliographic Details
Published in:IEEE transactions on industry applications 2018-07, Vol.54 (4), p.3971-3981
Main Authors: Valenzuela Cruzat, Javier, Valenzuela, M. Anibal
Format: Article
Language:English
Subjects:
Converters
Energy consumption
Fuel consumption
Fuels
Haul trucks
Load modeling
mine trucks
Mining
mining process
Open pit mining
Rectifiers
Resistance
Roads
Torque
Traction motors
trolley
truck modeling
Trucks
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Summary:As the exploitation of an open-pit mine is evolving, the depth and therefore the distance traveled by the mine haul trucks increases. As a result, the operational cost of mining operation increases due to the higher consumption of fuel and tires. This work presents the evaluation of the performance of a truck fleet when using a trolley assist system. A model of the trolley system is developed using an active-front-end converter, which in combination with the integrated electric-mechanical model of a mining truck, allows quantifying the production increase, fuel savings, and net energy consumption during an up-down cycle of the truck. A set of evaluations are presented, first on idealized uphill and downhill routes, and then using the coordinates of a route of a copper mine located to the north of Chile. Results show a 44% increase in the upgrade speed, a 16% reduction of the travel time, and a fuel savings of over 85% on each up-down cycle. The tool developed allows evaluating the performance of a truck fleet in any mine facility just knowing the coordinates of the mine routes and the models of the trucks.
ISSN:0093-9994
1939-9367
DOI:10.1109/TIA.2018.2823261