Assessment of energy-saving techniques in direct-current-electrified mass transit systems

López-López, Álvaro J.; Pecharromán, Ramón Rodríguez; Fernández-Cardador, Antonio; Cucala, Asunción P.

doi:10.1016/j.trc.2013.10.011

Cited by 67 publications

(31 citation statements)

References 41 publications

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“…In addition to the energy consumption of the traction system, the consumption of the auxiliaries has to be taken into account [25,26]. Main consumers are for example the steering support, the compressor and the air condition.…”

Section: Energy Consumptionmentioning

confidence: 99%

Fast Charging Battery Buses for the Electrification of Urban Public Transport—A Feasibility Study Focusing on Charging Infrastructure and Energy Storage Requirements

2015

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Abstract:The electrification of public transport bus networks can be carried out utilizing different technological solutions, like trolley, battery or fuel cell buses. The purpose of this paper is to analyze how and to what extent existing bus networks can be electrified with fast charging battery buses. The so called opportunity chargers use mainly the regular dwell time at the stops to charge their batteries. This results in a strong linkage between the vehicle scheduling and the infrastructure planning. The analysis is based on real-world data of the bus network in Muenster, a mid-sized city in Germany. The outcomes underline the necessity to focus on entire vehicle schedules instead on individual trips. The tradeoff between required battery capacity and charging power is explained in detail. Furthermore, the impact on the electricity grid is discussed based on the load profiles of a selected charging station and a combined load profile of the entire network.

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Section: Energy Consumptionmentioning

confidence: 99%

Fast Charging Battery Buses for the Electrification of Urban Public Transport—A Feasibility Study Focusing on Charging Infrastructure and Energy Storage Requirements

2015

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“…The energy consumption of urban rail trains is divided into two parts [7], [8] as shown in upper half of Fig. 4.…”

Section: Energy Consumption In Urban Rail Trainsmentioning

confidence: 99%

A Survey on Energy-Efficient Train Operation for Urban Rail Transit

Yang

Ning

et al. 2016

IEEE Trans. Intell. Transport. Syst.

314

133

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Due to rising energy prices and environmental concerns, the energy efficiency of urban rail transit has attracted much attention from both researchers and practitioners in recent years. Timetable optimization and energy-efficient driving, as two mainly used train operation methods in relation to the tractive energy saving, make major contributions in reducing the energy consumption that has been studied for a long time. Generally speaking, timetable optimization synchronizes the accelerating and braking actions of trains to maximize the utilization of regenerative energy, and energy-efficient driving optimizes the speed profile at each section to minimize the tractive energy consumption. In this paper, we present a fully comprehensive survey on energy-efficient train operation for urban rail transit. First, a general energy consumption distribution of urban rail trains is described. Second, the current literature on timetable optimization and energy-efficient driving is reviewed. Finally, according to the review work, it is concluded that the integrated optimization method jointly optimizing the timetable and speed profile has become a new tendency and ought to be paid more attention in future research.

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“…Bin presented an integrated method to optimize train headway by adjusting the train arrival time at platforms to improve train headway regulation [11]. The use of train regenerative braking is recognized as the main method to improve railway energy efficiency [12,13]. In order to achieve a global optimality of driving strategy and optimal timetable, Shuai Su analyzed a hierarchy of energy-efficient train operation and proposed an integrated algorithm to generate a globally optimal operation schedule [14,15].…”

Section: Introductionmentioning

confidence: 99%