Application of an energy storage device on a haulage diesel-electric locomotive used in quarry rail transport

The method of improving a locomotive used in quarry rail transport for hauling operations by means of an energy storage device installed on a separate battery section is considered. A mathematical model has been created that allows for the study of train movement taking into account the recommendations and provisions of locomotive traction theory. Studies of train movement were performed with a standard two-section locomotive, as well as with a modernized locomotive consisting of diesel and battery sections. The traction characteristics of the modernized locomotive were formed taking into account the separate loading of the sections. The parameters of train movement on a 9 km section between the iron ore loading point located in the quarry and the enrichment plant at the mining complex were studied and determined. Calculations show that when charging the energy storage device from a stationary power source, it’s most effective to operate with the battery section leading. This approach reduces fuel costs by 30.6% and CO 2 emissions by 38.8% compared to a standard locomotive. When charging the energy storage from a diesel generator, it’s more beneficial to operate with the diesel section leading. This results in a 13.9% reduction in both fuel costs and CO 2 emissions compared to a standard locomotive. In both scenarios, the diesel engine’s utilization is improved. The research results can be used in the improvement and creation of locomotives for quarry rail transport, in developing energy management strategies for traction systems with hybrid power units, and in the study of innovative electrified transport systems, among other applications.