Tractive effort modelling and design of hybrid powertrain for a diesel-hydraulic cane haul locomotive

Sebastian, B.R., Kenny, O.P., Situ, R., and Santarossa, L.G. (2015) Tractive effort modelling and design of hybrid powertrain for a diesel-hydraulic cane haul locomotive. In: Proceedings of the 37th Annual Conference of the Australian Society of Sugar Cane Technologists (37), pp. 395-405. From: ASSCT 2015: 37th Annual Conference of the Australian Society of Sugar Cane Technologists, 28-30 April 2015, Bundaberg, QLD, Australia.

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Abstract

Wilmar owns and operates a mixed fleet of diesel hydraulic locomotives that operate on two foot narrow gauge rail in its Queensland operations. This network serves as an effective transport system, hauling approximately fifteen million tonne of cane annually. An assessment of the practicality of converting Wilmar's diesel locomotives to a hybrid powertrain design provides an opportunity for improving energy efficiency of cane transport and requires the duty cycle performance of the locomotive to be assessed prior to further work. This paper presents a novel method to determine the tractive effort and energy requirements for the duty cycle, using track dependant physical equations of propulsion dynamics, as the conventional methods of dynamometer car measurements and empirical equations are restricted to broad-gauge rail. A simulation model was developed in MATLAB to determine the performance parameters of a modifiable real–time diesel-hydraulic train configuration. Additionally, the performance requirements of the hybrid powertrain in comparison to the diesel-hydraulic powertrain was demonstrated by developing an optimisable real-time model of a series-hybrid locomotive in SIMSCAPE, an interactive tool for physical systems simulation in MATLAB.

Testing and validation using field data obtained from on-board sensors, the locomotive's Programmable Logic Controller (PLC) and a track profile extraction method exclusively developed for this research, demonstrated that the model was capable of accurately predicting the performance parameters and energy consumption of the diesel-hydraulic locomotive for a particular duty cycle. The hybrid model developed in SIMSCAPE exhibited superior traction performance and significant improvements in fuel efficiency and emissions compared to the diesel-hydraulic locomotive for the same duty cycle.

Item ID: 43547
Item Type: Conference Item (Refereed Research Paper - E1)
Keywords: locomotives, real-time modelling, tractive effort, hybrid powertrain
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ISSN: 0726-0822
Date Deposited: 14 Apr 2016 01:40
FoR Codes: 09 ENGINEERING > 0902 Automotive Engineering > 090205 Hybrid Vehicles and Powertrains @ 40%
09 ENGINEERING > 0913 Mechanical Engineering > 091303 Autonomous Vehicles @ 30%
09 ENGINEERING > 0915 Interdisciplinary Engineering > 091599 Interdisciplinary Engineering not elsewhere classified @ 30%
SEO Codes: 88 TRANSPORT > 8801 Ground Transport > 880101 Rail Freight @ 40%
85 ENERGY > 8506 Energy Storage, Distribution and Supply > 850603 Energy Systems Analysis @ 40%
88 TRANSPORT > 8898 Environmentally Sustainable Transport > 889802 Management of Greenhouse Gas Emissions from Transport Activities @ 20%
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