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Overall capacity allocation of energy storage tram with ground
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
Hybrid energy storage system topology approaches for
This paper has critically reviewed the hybridization of various energy storage systems, including batteries with high-power ESSs such as SCs, superconducting magnetic energy storage systems,
Position-Based T-S Fuzzy Power Management for Tram With
This paper investigates an ESS based on supercapacitors for trams as a reliable technical solution with considerable energy saving potential. Operating the ESS
Supercapacitor and accelerating contact lines hybrid tram system
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).
Optimization of Energy Management Strategy and
The common on-board energy storage system of trams includes a battery system, a supercapacitor system, a flywheel system, a hybrid system of an internal combustion engine and battery or
Research on heat dissipation optimization and energy
DOI: 10.1007/s42768-024-00196-0 Corpus ID: 270683983; Research on heat dissipation optimization and energy conservation of supercapacitor energy storage tram @article{Deng2024ResearchOH, title={Research on heat dissipation optimization and energy conservation of supercapacitor energy storage tram}, author={Yibo Deng and
An On-board Energy Storage System for Catenary Free Operation of a Tram
Renewable Energy and Power Quality Journal (RE&PQJ) ISSN 2172-038 X, No.15 April 2017. An On-board Energy Storage System for Catenary Free Operation of a Tram. H. M. Al-Ezee, S. Tennakoon, I
Technical and economic feasibility of increasing tram system
The undiscounted annual cash flow of using EV battery as the energy storage for the tram system (ACF EV) is therefore calculated via Equation (6). (6) ACF EV = A n n u a l I n c o m e-OPEX M-OPEX C. where OPEX M is the annual OPEX related to maintenance, and the OPEX C is the annual OPEX related to the compensation provided
Comprehensive integration of Onboard Energy Storage
Hybridization of rolling stock vehicles with onboard energy storage systems in AC and DC electrification system is a realistic future trend that will transform the railway industry.
An On-board Energy Storage System for Catenary Free
2. Power Delivery Technologies A. On-board Energy storage options . Batteries: A battery is a collection of electro-chemical cells either parallel or series connected to obtain a required power
Optimal Sizing of On-Board Energy Storage Systems and Stationary Charging Infrastructures for a Catenary-Free Tram
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
A Hybrid Energy Management Strategy based on Line Prediction and Condition Analysis for the Hybrid Energy Storage System of Tram
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
Energy-efficient Control of Energy Storage Tram with Signaling
Trajectory optimization for energy storage tram (EST) aims at finding the optimal speed profile that can reduce the discharge energy of energy storage system (ESS) and absorb the regenerative braking energy as much as possible. This paper proposes a two-level programming framework considering the operational and signaling constraints as well as
What Is Energy Storage? | IBM
Energy storage is the capturing and holding of energy in reserve for later use. Energy storage solutions for electricity generation include pumped-hydro storage, batteries, flywheels, compressed-air energy storage, hydrogen storage and thermal energy storage components. The ability to store energy can reduce the environmental
Energy efficiency of tram emulation with energy storage system
The same HESS is used in electric vehicles in which UC voltage is maintained higher than battery voltage to provide peak energy and peak instantaneous power, respectively [16]. In [17], the load
Multi-mode Dynamic Proportional Energy Management
In this paper, a self-adaptive multi-mode dynamic proportional control strategy for hybrid-energy-storage tramcar is proposed. With battery life and system efficiency as optimization objectives, power distribution between two sources is carried out by pseudo-spectral method. According to the optimization results, an on-line dynamic proportional EMS is
Graphene-based hybrid materials and their applications in energy
Graphene attracts more and more scientists and researchers owing to its superior electronic, thermal, and mechanical properties. For material scientists, graphene is a kind of versatile building blocks, and considerable progress has been made in recent years. Graphene-based hybrid materials have been prepared by incorporating inorganic
Tram LC Filter Stabilization by Energy Storage System
As mentioned in Section 4.2, the minimum allowable voltage in the trolleybus overhead traction line is 400 V. As the power load in urban transportation systems is variable and random, the charging
Energy management strategy optimization for hybrid energy
Trams with energy storage are popular for their energy efficiency and reduced operational risk. An effective energy management strategy is optimized to
Stationary and on-board storage systems to enhance energy and
The most natural way to reuse this energy is either to send it back into other trains that need it or to store into some storage means. The situation is depicted in Fig. 1 and Fig. 2 Fig. 1 the braking energy from train A is sent into train B, while in Fig. 2 it is partly sent into B, partly stored in the storage system located around ESS2. The next
Autonomous-rail Rapid Transit Tram: System Architecture, Design
Secondly, it introduces the core subsystems of ART tram vehicle structure, electrical system, and energy storage system. Thirdly, it focuses on analyzing the structure composition and control principles of the Automatic All-Wheel Steering System, which includes two key core subsystems: path tracking control subsystems and trajectory
Integrated Optimization of Speed Profiles and Power Split for a Tram
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
Optimization of Energy Management Strategy and Sizing in Hybrid Storage
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
Stochastic optimization of a stationary energy storage system
Hence, the charging demands of the tramline are uncertain, due to uncertainties in arrival time and amount of charged energy requested by the tram''s OESS. Installing a stationary energy storage system (SESS) has been proposed to support the electric grid of urban public transport in many studies, such as the fast-charging station of
Optimal Sizing of On-Board Energy Storage Systems and
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
Supercapacitor and accelerating contact lines hybrid tram
A supercapacitor and accelerating contact line hybrid tram system is proposed. •. A tram consumes high energy during acceleration but, low energy thereafter. •. Supercapacitors can be charged fast but, they have low energy density. •. During acceleration, a tram draws power from accelerating contact line. •.
Onboard energy storage in rail transport: Review of
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
A Hybrid Energy Management Strategy based on Line Prediction
Abstract: This article focuses on the optimization of energy management strategy (EMS) for the tram equipped with on-board battery-supercapacitor hybrid energy storage system.
siemenscomrailelectriication Sitras HES
The Sitras® HES hybrid energy storage system will be used for rail vehicles and enables the storage of the braking energy and the operation without overhead contact line. It combines the advantages of powerful double-layer capacitors and traction batteries. Due to its modular design Sitras HES can be adapted proj-ect specific to the according
Advances in thermal energy storage: Fundamentals and
Section 2 delivers insights into the mechanism of TES and classifications based on temperature, period and storage media. TES materials, typically PCMs, lack thermal conductivity, which slows down the energy storage and retrieval rate. There are other issues with PCMs for instance, inorganic PCMs (hydrated salts) depict
Position-Based T-S Fuzzy Power Management for Tram With Energy Storage
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