Equipping suburban diesel–electric multiple unit with a hybrid power unit

• The paper considers the use of an energy storage device in the traction system of a diesel train for suburban transport. • Simulations are carried out for three variants of using an energy storage device in the traction system of a diesel train with electric power transmission when it moves on a section of track. • According to the modelling results, it is shown that the use of the energy storage device in the plug-in mode leads to the lowest cost of fuel and energy resources. Improving the competitiveness of railway passenger transport requires low fuel and energy resource expenses. A promising direction in this regard is using energy storage in the traction systems of autonomous rolling stock. The paper considers the use of energy storage in the traction system of a diesel train for suburban transport. The modeling of a diesel train movement is carried out to determine the parameters of movement and consumption of fuel and energy resources. The movement of a diesel train on the Liubotyn-Boromlya section is considered. Three options for using an energy storage device in the traction system of a diesel train are investigated. It is established that the energy accumulation in the on-board storage device is 25 % of the energy consumed for traction. According to the results of the calculations, it was determined that using an energy storage device reduces fuel consumption by 22…28 %. In the case of charging the energy storage device of the plug-in traction system, the reduction in the cost of fuel and energy resources is 36.5…40.4 %. According to the study results, it is predicted that using a plug-in traction system is a priority for diesel trains engaged in suburban transport.