Abstract. A hybrid energy storage system (HESS) of tram composed of different energy storage elements (ESEs) is gradually being adopted, leveraging the …
Despite low energy and fuel consumption levels in the rail sector, further improvements are being pursued by manufacturers and operators. Their primary efforts aim to reduce traction energy demand, replace diesel, and limit the impact of electrified overhead infrastructures.
Hybridization of rolling stock vehicles with onboard energy storage systems in AC and DC electrification system is a realistic future trend that will transform.
Highlights. The release scenario was thermal activation of the pressure release devices on the vehicle''s tanks. Simulations were used to model the release of hydrogen from the fuel-cell vehicle. The simulations were validated by performing tests in a scaled tunnel experiment. Risk analysis indicates that the level of potential risk from such ...
1 Introduction. Energy storage systems (ESS) are increasingly being used in electric traction as a means of more effectively utilizing regenerative braking energy which, in case of rail vehicles, is a significant part of energy taken from power system because of their large mass, or to maintain proper voltage [1].
An on-board energy storage syst em for catenary free operation. of a tram is investigated, using a Lithium Titanate Oxide (LTO) battery system. The b attery unit is charged by trackside power ...
However Toshiba developed a space-saving energy storage system by using the auxiliary power unit, which converts energy for the tram''s on-board lighting and air conditioning to charge the SCiB. As a result, the energy storage system, previously installed under the floor of the tram, can be installed under the passenger seats of trams …
A tram with on-board hybrid energy storage systems based on batteries and supercapacitors is a new option for the urban traffic system. This configuration enables …
On April 28, 2024, a fire broke out at a lithium battery energy storage station located in the commercial district of Nelmore (Lehr district), Germany. Two firefighters were lightly injured while fighting the fire. The police announced that the fire was brought under control ...
Energy management strategy optimization for hybrid energy storage system of tram based on competitive particle swarm algorithms. Zhenyu Zhang, Xiaoqing Cheng, …
The growing interest in the use of energy storage systems to improve the performance of tramways has prompted the development of control techniques and optimal storage devices, displacement, and sizing to obtain the maximum profit and reduce the total installation cost. Recently, the rapid diffusion of renewable energy generation from …
Schematic diagrams of different energy supplies for the catenary-free tram: (a) UC storage systems with fast-charging at each station (US-FC), (b) battery storage systems with slow-charging at ...
Energy storage systems (ESSs) play a significant role in performance improvement of future electric traction systems. This paper investigates an ESS based on supercapacitors for trams as a reliable technical solution with considerable energy saving potential. Operating the ESS onboard a tram brings the following benefits: reduction of …
DOI: 10.1016/j.est.2023.109698 Corpus ID: 265287757 Energy management strategy optimization for hybrid energy storage system of tram based on competitive particle swarm algorithms The traction substation in conventional power supply systems for trams is a ...
Therefore, the optimal sizing method of battery-supercapacitor energy storage systems for trams is developed to investigate the optimal configuration of ESEs based on a constant power threshold. Firstly, the optimal sizing model of HESS taking size, mass, and cost of ESEs as a comprehensive objective function is established.
Compared with traditional tram powered by a DC catenary, energy efficiency of the catenary-free tram can be enhanced considerably due to increased recuperation of braking energy [4], [5]. For traditional tramlines, the regenerative energy of the trams is not stored, but rather immediately delivered to adjacent trams that are in an …
INDUSTRY FOCUS: INNOVATION UND TECHNOLOGY An intelligent direct voltage substation (GUW+) is currently being built at Hannover''s Döhren depot as part of the so-called electric bus offensive. From the end of 2021, it will contribute to supplying the light rail vehicles and electric buses of ÜSTRA Hannoversche Verkehrsbetriebe AG. For the first …
energies Article Optimal Sizing of On-Board Energy Storage Systems and Stationary Charging Infrastructures for a Catenary-Free Tram Ying Yang 1, Weige Zhang 2, Shaoyuan Wei 2 and Zhenpo Wang 3,* 1 ...
Jean Francois Reynaud and others published Comprehensive integration of Onboard Energy Storage ... Line-Voltage Control Based on Wayside Energy Storage Systems for Tramway Networks Article Full ...
This article focuses on the optimization of energy management strategy (EMS) for the tram equipped with on-board battery-supercapacitor hybrid energy storage system. The purposes of the optimization are to prolong the battery life, improve the system efficiency, and realize real-time control. Therefore, based on the analysis of a large number of …
In order to design a well-performing hybrid storage system for trams, optimization of energy management strategy (EMS) and sizing is crucial. This paper proposes an improved EMS with energy interaction between the battery and supercapacitor and makes collaborative optimization on both sizing and EMS parameters to obtain the best working performance …
A tram with on-board hybrid energy storage systems based on batteries and supercapacitors is a new option for the urban traffic system. This configuration enables the tram to operate in both catenary zones and catenary-free zones, and the storage of regenerative braking energy for later usage. This paper presents a multiple phases …
The Paddington tram depot fire occurred on the night of 28 September 1962, and was one of the largest fires in Brisbane ''s history. [1] As well as the depot, 67 trams were destroyed, 20% of the city''s fleet. [2] The destruction of the depot is generally seen as the beginning of the end for Brisbane''s tram system, providing the justification for ...
Trams with energy storage are popular for their energy efficiency and reduced operational risk.An effective energy management strategy is optimized to enable a reasonable distribution of demand power among the storage elements, efficient use of energy as well as enhance the service life of the hybrid energy storage system (HESS).
Further indicators found in the literature may be derived from the above-mentioned indicators of travel time [7,14,16,52], tram travel time [13] (with variability) [12,51,52], and level of service ...
Wärtsilä provides optimised energy storage technology, including energy storage software, hardware, as well as services bined with the deep global resources and expertise, we seamlessly integrate traditional and …
Energy management in Siemens ''Combino Plus'' multimodal tram vehicles when rolling on non-electrified sections: (I) acceleration power is supplied by supercapacitors; (II) cruising/coasting power is supplied by …
There are two kinds of non-grid power supply technologies: sectional ground power supply technology and on-board energy storage technology. The more commonly used is on-board energy storage technology. There are some similarities between a tram with on
Freight tram systems can potentially reduce commercial road vehicle use and, consequently, reduce congestion, accidents, air pollution, noise levels, and road maintenance costs. This paper explores the new application for the urban rail system as a sustainable solution for urban freight distribution. A significant problem in using rail for …
2021 International Fire Code (IFC), Chapter 12, Electric Energy Storage Systems: The 2021 edition of the International Fire Code provides prescriptive requirements and identifies the failure modes to be considered in a hazard mitigation analysis (Section 1207.1.4).
This study is focused on the topical issue of increasing the energy efficiency in DC railway systems, in the context of global concerns for reducing the CO2 emissions by minimizing the energy consumption and energy loss. The main achievements in this complex issue are synthesized and discussed in a comprehensive review, …