Results 21 to 30 of about 839 (175)

Operational Diagnostics System for Asymmetric Emergency Modes in Traction Drives with Direct Torque Control

Applied Sciences, 2023
This article presents an analysis of the causes behind the development of asymmetric modes in a traction drive system that features direct torque control (DTC) of a rolling stock with asynchronous traction motors.
Sergey Goolak, Borys Liubarskyi, Vaidas Lukoševičius, Robertas Keršys, Artūras Keršys   +4 more
doaj   +1 more source

Optimization of stator ventilation structure of high‐speed railway traction motor based on the genetic algorithm

IET Electric Power Applications, 2023
Aiming at the problems of high power density and difficult heat dissipation of high‐speed train traction motors, this study takes a 600 kW asynchronous traction motor as a research object and optimises the motor cooling structure through the fluid ...
Junci Cao, Hua Yan, Wenlong Li, Dong Li, Yu Wang   +4 more
doaj   +1 more source

Application of permanent magnet synchronous direct-drive traction system on Xuzhou metro line 1

机车电传动, 2022
Metro trains have the advantages of high starting acceleration, high operating speed, punctuality and large carrying capacity, but energy consumption is also an important issue that needs close attention in metro operation.
ZENG Yun, CHEN Qihui, ZENG Xiaofan, LI Ke   +3 more
doaj  

Analysis of the traction motor electrical parameters of the trolleybus

Vestnik MGTU, 2022
The technical equipment of modern trolleybuses (increased power of traction motors, regenerative-rheostatic braking, anti-slip and anti-lock systems, an on-board computer for monitoring and controlling the operation of the traction drive, GLONASS ...
Vlasov A. B., Buev S. A., Kucherenko V. V., Urvantsev V. I.   +3 more
doaj   +1 more source

Improving the Robustness of Visual Teach‐and‐Repeat Navigation Using Drift Error Correction and Event‐Based Vision for Low‐Light Environments

Advanced Robotics Research, EarlyView.
Visual teach‐and‐repeat (VTR) navigation allows robots to learn and follow routes without building a full metric map. We show that navigation accuracy for VTR can be improved by integrating a topological map with error‐drift correction based on stereo vision.
Fuhai Ling, Ze Huang, Tony J. Prescott
wiley   +1 more source

Analysis on Asynchronous Power Generation System for Diesel Locomotive

机车电传动, 2021
Aiming at the problem of low power factor and efficiency of the asynchronous motor in the steady-state operation of the asynchronous generator in the traction power generation system of the diesel locomotive, the zero reactive power and the maximum ...
Haibo FENG, Jisheng HU
doaj  

Ultrafast Optoacoustics Reveals Intricate 3D Anisotropic Elasticity in Nanocrystalline Membranes

Advanced Science, EarlyView.
Ultrafast optoacoustic spectroscopy combined with a Sagnac interferometer enables non‐contact, simultaneous characterization of thickness and the full three‐dimensional anisotropic elastic constants in freestanding nanocrystalline copper membranes. By capturing gigahertz Lamb waves and zero‐group‐velocity resonances followed by SAFE‐GA inversion, the ...
Shuchang Zhang, Yi He, Guojie Luo, Jie Huang, Pak San Yip, Haoyu Cui, Wanglinhan Zhang, Zijian Wang, Lin Ye, Yang Lu, Zhongqing Su, Yehai Li   +11 more
wiley   +1 more source

Artificial Intelligence for Advanced Functional Materials: Progress and Emerging Frontiers

Advanced Intelligent Systems, EarlyView.
Artificial intelligence is transforming the discovery of functional materials by linking synthesis, characterization, simulation, and design in unified workflows. Advances in machine learning, autonomous experimentation, and foundation models are accelerating innovation across energy, electronics, and biomedicine, while revealing new frontiers for ...
Cristiano Malica, Kostya S. Novoselov, Seongmin Kim, Yousung Jung, Silvana Botti, Miguel A. L. Marques, Tigany Zarrouk, Miguel A. Caro, Sanggyu Chong, Michele Ceriotti, Marivi Fernandez‐Serra, Sara Navarro‐Rodriguez, Aakash Ashok Naik, Janine George, Ömer Hasan Omar, Victor Trinquet, Gian‐Marco Rignanese, Andrey Ustyuzhanin, Sonia Conesa‐Boj, Juan Rojo, Minh‐Tuan Dau, Simon M.‐M. Dubois, Jean‐Christophe Charlier, Jose H. Garcia, Romain Gautier, Rachid Laref, Junfeng Qiao, Giovanni Pizzi, Nicola Marzari, Camilla Coletti, Antonio Rossi, Jean‐Lucas Uslu, Chiara Zanardi, Vincenzo Palermo, Wide Hogenhout, Natalia Konchakova, Peter Klein, Tejs Vegge, Stephan Roche   +38 more
wiley   +1 more source

Knowing education in Thailand like a global expert organisation: Politics, context and data

British Educational Research Journal, EarlyView.
Abstract Global expert organisations play increasingly significant roles in the way that education is understood and governed internationally, including by influencing the discourses through which education is conceptualised and shaping norms of what counts as success, failure, progress and the most desirable visions for the future.
Steve Puttick, Chris Atkin, Wayne Dyble, Nick Gee, Ami Montgomery, Chawin Pongpajon, Waewalee Waewchimplee   +6 more
wiley   +1 more source

Synthesis of the Current Controller of the Vector Control System for Asynchronous Traction Drive of Electric Locomotives

Energies, 2022
This paper deals with the analysis of the operating conditions of traction drives of the electric locomotives with asynchronous traction motors. The process of change of the catenary system voltage was found to have a stochastic character.
Sergey Goolak, Viktor Tkachenko, Svitlana Sapronova, Vaidas Lukoševičius, Robertas Keršys, Rolandas Makaras, Artūras Keršys, Borys Liubarskyi   +7 more
doaj   +1 more source