This article proposes a rolling optimization strategy (ROS) based on wavelet neural network prediction and dynamic programming (DP) for tram equipped with on-board battery-supercapacitor hybrid energy storage system, and proves the rationality of using RB strategy to replace ROS strategy entirely or partially in some scenarios. This article focuses on …
A power conversion system, Bi-Directional DC-DC converter, and a charge/discharge energy management system are required for the realisation of catenary free system. Modern cities require zero emissions, silent, and energy efficient transport solutions that have low or no visual impact on the environment. On-board energy storage systems have a significant role in providing the …
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 historical operation data, this …
Finance, legal and people roles Regardless of which sector they''re working in, businesses need strong finance, legal and people teams. The energy storage industry is no exception. At Field, they are the glue that holds us together - whether that''s by bringing new ...
The "Two-Field Storage" approach splits the BTES in two fields with different temperature levels: one field covers the heating demand, while the cooling demand is covered by the second field. The project team is confident that this approach will yield in a …
The high energy density and simplicity of storage make hydrogen energy ideal for large-scale and long-cycle energy storage, providing a solution for the large-scale consumption of renewable energy. The rapid development of hydrogen energy provides new ideas to solve the problems faced by current power systems, such as insufficient balancing support capacity and …
energy storage device, a case study is carried out, which compares the energetic performance of a tram without storage device with a tram with a flywheel energy storage system characterized in Tab. 1. The grid parameters are equal in both scenarios andfeed-in
The paper is focused on the tram input LC traction filter stabilization by the Energy Storage System. The input LC filter is almost undamped resonant circuit which is mainly excited by the motor constant torque command. The tram during voltage drops increases the current flow from the LC filter to hold constant torque and thereby further decreases the LC …
This study focuses on minimizing fuel consumption of a fuel cell hybrid tram, operated with electric power from both the fuel cell stack and the energy storage system, by optimizing energy distribution between distinct …
Based on the existing operating mode of a tram on a certain line, this study examines the combination of ground-charging devices and energy storage technology to form a vehicle (with …
The simulation results show that compared with the traditional proportional control strategy, the multi-mode dynamic proportional control Strategy for hybrid-energy-storage tramcar greatly improves the battery life and efficiency. In this paper, a self-adaptive multi-mode dynamic proportional control strategy for hybrid-energy-storage tramcar is proposed. With battery life …
Super-capacitors and super-capacitor/battery hybrid trams are a relatively new addition to catenary-free tram technologies. These trams have evolved from battery-powered or -assisted …
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 integrated optimization (MPIO) …
The characteristics of integrated traction box for energy storage modern tram are presented in this paper. The structure of box,devices arrangement,structural strength,ventilation,heat insulation,water draining ability,EMC design and maintenance of box are described in detail.
2 CURRENT STATUS OF THE RAIL SECTOR Rail is already among the lowest-emitting and most efficient transport sectors. Despite a 9% share of total passenger and freight transport activity, railways account for less than 2% of direct and well-to-wheel ...
This paper introduces an optimal sizing method for a catenary-free tram, in which both on-board energy storage systems and charging infrastructures are considered. To quantitatively analyze the trade-off between available charging time and economic operation, a daily cost function containing a whole life-time cost of energy storage and an expense of …
DOI: 10.1016/j.est.2023.108962 Corpus ID: 262201069 Optimal sizing of battery-supercapacitor energy storage systems for trams using improved PSO algorithm @article{Zhang2023OptimalSO, title={Optimal sizing of battery-supercapacitor energy storage systems for trams using improved PSO algorithm}, author={Zhenyu Zhang and Xiaoqing Cheng and Zongyi Xing and Zihao Wang …
Recently, the National Energy Administration officially announced the third batch of major technical equipment lists for the first (set) in the energy sector. The " 100MW HV Series-Connected Direct-Hanging Energy …
This section provides an overview of the main TES technologies, including SHS, LHS associated with PCMs, TCS and cool thermal energy storage (CTES) systems [].7.2.1 Classification and Characteristics of Storage SystemsThe main types of thermal energy ...
Thermal energy, also known as heat, has been one of the essential needs for humanity since the existence of people. First, they have needed the heat for sheltering and cooking purposes. Then, their needs for the heat have evolved into different purposes such as ...
Compared with the traditional cooling scheme using special air conditioning units, each energy storage system can save 967.16 kW·h per year using air-conditioning waste exhaust cooling, effectively reducing the overall energy consumption of the vehicle.
The paper is concerned with description of the simulation model of the tram equipped by the energy storage system using supercapacitors. This paper is also concerned with the construction of the tram emulation with the energy storage system. The tram accumulates the kinetic energy into supercapacitors during vehicle braking. This energy can be used to …
A hybrid energy storage system (HESS) of tram composed of different energy storage elements (ESEs) is gradually being adopted, leveraging the advantages of each ESE. The optimal sizing of HESS with a reasonable combination of different ESEs has become an important issue in improving energy management efficiency.
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 peak …
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 ...
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 …
To improve the energy efficiency and meet the operation area without catenary, an on-board energy storage systems (OESS) has been utilized in urban transit [4, 5, 6]. For the tram powered by OESS, namely catenary-free …
A hybrid energy storage system (HESS) of tram composed of different energy storage elements (ESEs) is gradually being adopted, leveraging the advantages of each ESE. The optimal sizing of HESS with a reasonable combination of different ESEs has become an important issue in improving energy management efficiency.
Simulation of Regenerative Energy Storage with Supercapacitors in Tatra T3A Type Trams EUROSIM/UKSim2008 : UKSim Tenth International Conference on Computer Modelling and Simulation: Proceedings 2008 Leonards Latkovskis, Viesturs Bražis The article ...
This paper describes a hybrid tram powered by a Proton Exchange Membrane (PEM) fuel cell (FC) stack supported by an energy storage system (ESS) composed of a Li-ion …
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