Results 211 to 220 of about 17,915,433 (247)

Load distribution of herringbone gears in high-speed EMUs under track irregularity

Journal of Vibration and Control
Owing to its low axial force and high load-bearing capacity, herringbone gear transmission shows significant potential for application in high-speed heavy-haul railway transportation.
Hao Wu, Jing Wei, Jia-Xing He, Yi Liu, Ya-Yun Qi   +4 more
semanticscholar   +1 more source

High speed EMU modeling based on the measured data

2009 International Conference on Sustainable Power Generation and Supply, 2009
Based on a large amount of actual measured data on railway line, this paper presents a modeling method using curve-fitting and probabilistic density functions for a high speed EMU. This method better simulates the real world and can be used to build a rapid data exchange between the trains and the traction power system simulation.
null Yang Shaobing, null Huang Mei, null Wu Mingli   +2 more
openaire   +1 more source

Investigating the Influence of Rotation Speed on Ventilation System of Traction Motors to Driving High-speed EMUs

International Conference on Electrical Machines and Systems, 2019
The power loss of traction motor causes a severe problem of heat generation. Ventilation system is one of the most significant heat dissipation components of the traction motor.
Yun Feng, B. Xiong, Hua-Lin Shi
semanticscholar   +1 more source

Research on the Optimization Control Strategy of the Four-Quadrant Rectifiers for High-Speed EMUs

2024 IEEE International Conference on Electrical Energy Conversion Systems and Control（IEECSC)
The four-quadrant rectifier is an important component of electric multiple units (EMUs), and the optimization of its control strategy is a hot spot. First, this paper introduces the traditional control strategy and explores the influence of the presence ...
Rui-Feng Shi, Xia Lin, Guang-Tian Shi
semanticscholar   +1 more source

Speed Simulator Design for Braking System Validation of High-Speed EMUs

International Conference on Information Technology in Medicine and Education, 2018
It is necessary to continuously validate whether the function and performance of braking system meet the requirements of the specification during the producing, commissioning and maintaining of the high-speed EMU (Electric Multiple Units) trains.
Bo Li
semanticscholar   +1 more source

Analysis on Load Spectrum of Bogie Frame for High-Speed EMU

Applied Mechanics and Materials, 2014
The load spectrum, on which there is not a thorough research, is the key factor of the safe operation of EMU. A dynamic model of some high-speed EMU is established and the load time history of main load on frame is obtained through simulation and analysis based on the Beijing-Tianjin route.
Yu Guang Wang, Da Fu Zhang
openaire   +1 more source

Effects of Crosswind to Running Safety of High-Speed EMU

International Conference on Transportation Engineering 2009, 2009
The derailment accident of the train caused by the too big crosswind was often occurred in the world. It was a serious danger to the running safety of the railway train and the people's life and treasure. The highest running speed of the EMU has reached 350 km/h and the biggest wind speed nearly 30 m/h at the running area of the EMU, so running safety ...
openaire   +1 more source

Optimization of high speed EMU suspension parameters for vibration reduction

Journal of Mechanical Science and Technology, 2013
Various designs of high speed EMU (electric multiple units) operating at maximum speed of 400 km/h or above are under active development in many countries. Driving at such extreme high speed, the EMUs that are equipped with multiple power units and non articulated bogies normally experience severe level of vibration.
Seung-Guk Baek, Bumsik Shin, Sang Won Lee, Yeon-Sun Choi, Jinhyun Kim, Ja Choon Koo   +5 more
openaire   +1 more source

Strength and Modal Analysis of High Speed EMU Gearbox Housing

2019
With the continuous increase of China’s high-speed railway and the improvement of passenger vehicle dynamics and static performance requirements, the gearbox housing of the core component of power transmission is facing a severe test. Based on theoretical mechanics and finite element method, this paper calculates the static strength and modal state of ...
Haijun Huang, Bichao Yin, Chaowen Wang, Haiyan Zhu   +3 more
openaire   +1 more source

Experimental Modal Analysis of High-Speed EMU Carbody Structure

2012
Modal is the natural characteristic of structural vibration, each mode has a specific frequencies, damping and modal shape. Modal parameters reflect the dynamic properties of the structure. The dynamic characteristics of car-body structure play an important role to the stability and comfort of the High-speed EMU (Electric Multiple Unit).
Yanchuang Ding, Qiang Li, Zhencheng Chang, Wenzhong Zhao   +3 more
openaire   +1 more source