Results 61 to 70 of about 454,537 (209)

Power quality phenomena in electrified railways: Conventional and new trends in power quality improvement toward public power systems [PDF]

, 2018
Nowadays, railway electrification is the most efficient way to power the trains. However, power quality (PQ) phenomena toward public power systems (PPSs) have always a main concern to the railway operators, especially when the single phase traction power
Afonso, João L., Carvalho, Adriano S., Martins, Antonio P., Monteiro, Vítor Duarte Fernandes, Sousa, Tiago J. C., Tanta, Mohamed   +5 more
core   +1 more source

Availability Evaluation of Overhead Contact Lines Based on a Stochastic Colored Petri Nets Model

IET Electrical Systems in Transportation, Volume 2025, Issue 1, 2025.
Due to their nonbackup characteristics and constant exposure to outdoor conditions, the performance of overhead contact lines (OCLs) will gradually degrade over time and further result in equipment defects or frequent failures. These issues significantly impact system availability and incur substantial repair costs.
Jingheng Zhou, Shibin Gao, Long Yu, Bohan Li, Youcef Belkhier   +4 more
wiley   +1 more source

Study on electric spark discharge between pantograph and catenary in electrified railway

IET Electrical Systems in Transportation, 2022
The electric spark caused by pantograph‐catenary (PC) electrical contact failure happens frequently, it is a kind of arcing phenomenon which can severely affect the current collection of PC. The theoretical analysis and modelling of PC electric spark are
Hongyi Zhou, Fuchuan Duan, Zhigang Liu, Long Chen, Yang Song, Yexin Zhang   +5 more
doaj   +1 more source

GENETIC ALGORITHM-PID CONTROLLER FOR MODEL ORDER REDUCTION PANTOGRAPHCATENARY SYSTEM [PDF]

, 2021
Controlling the contact force between the pantograph and the catenary has come to be a requirement for improving the performances and affectivity of high-speed train systems Indeed, these performances can also significantly be decreased due to the fact ...
Abboud, Izz K., Al-Awad, Nasir A., Al-Rawi, Muaayed F.   +2 more
core   +2 more sources

Modular and Transformable Six‐Legged Robot: Mathematical Modeling

Journal of Engineering, Volume 2025, Issue 1, 2025.
A transformable limb system is a single‐degree‐of‐freedom linkage connecting three legs of a hexapod, comprising two identical three‐legged platforms. These legs are based on the Peaucellier–Lipkin mechanism. The group of legs attached to the same platform adjusts its movement based on the all‐or‐nothing postures of the transformable limb system.
Ignacio Juárez-Campos, Ricardo Estebané Arroyo-Piñón, Emil Dumic   +2 more
wiley   +1 more source

Research Progress and Prospects on Pantograph-Catenary Arcing in Urban Rail Transit

Chengshi guidao jiaotong yanjiu
［Objective］ Pantograph-catenary (PC) arcing degrades the train current collection quality, causes ablation of pantograph carbon strips and contact wires, and consequently affects safety and stability of train operation.
ZHANG Yuhang, WEI Zhiheng, ZHOU Yuxiang, MA Zhipeng   +3 more
doaj   +1 more source

A New Contactless Fault Diagnosis Approach for Pantograph-Catenary System Using Pattern Recognition and Image Processing Methods

Advances in Electrical and Computer Engineering, 2014
Comfort and safety of railway transport has become more important as train speeds continue to increase. In electrified railways, the electrical current of the train is produced by the sliding contact between the pantograph and catenary. The quality of
AYDIN, I., KARAKOSE, M., AKIN, E.
doaj   +1 more source

Contact Wire Irregularity Stochastics and Effect on High-speed Railway Pantograph-Catenary Interactions

, 2020
In high-speed rail operations, contact wire irregularity (CWI) in a catenary is a common disturbance to the pantograph-catenary interaction performance, which directly affects the quality of current collection.
Liu, Zhendong, Liu, Zhigang, Nåvik, Petter Juell, Rønnquist, Anders, Song, Yang   +4 more
core   +2 more sources

Influence Study on Electric Vehicle-traction Network System Considering Pantograph Arcing

DEStech Transactions on Computer Science and Engineering, 2018
This article analyzes the influence of pantograph arcing phenomenon on the electrical quantity which is related equipment of traction power supply system.
Lisha Cao, Ying Wang, Xiaoqiang Chen, Yan-Long Shen, Ming-Xin Tian   +4 more
semanticscholar   +1 more source

A Review of Quadruped Robots: Structure, Control, and Autonomous Motion

Advanced Intelligent Systems, Volume 6, Issue 6, June 2024.
Quadruped robots are advanced intelligent system. In this article, research achievements in key technical areas of quadruped robots, encompassing structural design, gait planning, traditional control strategies, intelligent control strategies, and autonomous movement, are comprehensively discussed.
Yanan Fan, Zhongcai Pei, Chen Wang, Meng Li, Zhiyong Tang, Qinghua Liu   +5 more
wiley   +1 more source