Results 21 to 30 of about 783 (177)
IET Electrical Systems in Transportation, 2022 Medium‐voltage DC (MVDC) electric railway systems have several advantages over conventional DC and AC railway electrification systems. These advantages include higher capacity, possibility of connecting to power networks at lower voltage, removal of ...
Sina Sharifi +4 more
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ANALYSIS OF THE SMART GRID CONCEPT IN THE RAILWAY TRACTION POWER SUPPLY SYSTEM
POWER ENGINEERING: economics, technique, ecologyThe Smart Grid network system is a concept of a fully integrated, self-regulating and renewable electric power system, which has a network topology and includes all generating sources, trunk and distribution networks and all types of electric energy consumers, managed by a single network of information and control devices and systems in real time mode.
Volodymyr Nerubatskyi, Denys Hordiienko
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IEEE Access, 2020 To solve the three-phase unbalance and reactive power problems in the electric railway power supply system, this paper proposes a Scott transformer based hypotenuse hybrid traction power system (Scott-HHPS).
Leilei Zhao +4 more
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Sensors, 2021 This paper describes an innovative integrated solution for monitoring and protection of the power supply system of electric traction. The development of electronics devices, new possibilities to communicate (wireless), and new sensors makes it possible ...
Mihai Andrusca +3 more
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Research on the monitoring system for induced voltage and ground current of 27.5 kV cable sheath in railways [PDF]
Railway SciencesPurpose – The purpose of this study is to address the deficiency in safety monitoring technology for 27.5 kV high-voltage cables within the railway traction power supply by analyzing the grounding methods employed in high-speed railways and developing an
Zehui Zhang +5 more
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Optimization Research on the Traction System Changing Scheme with ETCS
Kongzhi Yu Xinxi Jishu, 2022 In order to meet the needs of cross-border railway transportation in Europe and improve the efficiency of cross-border railway transportation, cross-border transportation trains must not only be compatible with the railway signaling systems of various ...
ZHENG Yi +5 more
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Carbon emission assessment of tunnel infrastructures: From construction to operation
Deep Underground Science and Engineering, EarlyView.This study develops a lifecycle carbon accounting framework for tunnel infrastructures, covering design, construction, operation, maintenance, and dismantling. Applied to a subsea tunnel case, the framework reveals the carbon emission distribution among four typical tunnel types and highlights potential carbon offset methods for low‐carbon tunnel ...
Luyuan Long +4 more
wiley +1 more source
Energies, 2021 To relieve the contradiction between supply and demand, a multi-port power conditioner (MP-PC) and control strategy with renewable energy access for a railway traction system is presented, which is mainly composed of full-bridge-based MMC and isolated DC/
Fujun Ma +5 more
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Energy Optimization Models for the Locomotive Assignment Problem
Networks, EarlyView.ABSTRACT Reducing energy consumption is a key objective in transportation. Using detailed infrastructure data, this study introduces the Green Locomotive Assignment Problem (GLAP) to minimize energy consumption in railway operations by efficiently assigning locomotives to pre‐scheduled trains.
Gislind Baumgartner +3 more
wiley +1 more source
Quality and Reliability Engineering International, EarlyView.ABSTRACT Electric multiple unit (EMU) trains, widely used in modern railway transportation, use Nickel–Cadmium (Ni–Cd) batteries to power auxiliary systems on board, including lighting, ventilation, control electronics, and emergency systems. These batteries are often connected in parallel to ensure a wider power supply range for electrical loads that ...
Christian Capezza +4 more
wiley +1 more source