Application Research on CHR2 Type EMU Braking System

2017 ◽  
Vol 1 (1) ◽  
Author(s):  
Lei Pan
Keyword(s):  
High Speed ◽  
Power Source ◽  
Drive System ◽  
Application Research ◽  
Power Sources ◽  
Traction Drive ◽  
Braking System ◽  
Multi Level ◽  
Traction Power

CRH2 high-speed EMU is power source of traction drive system. The whole system is evenly distributed among the four basic units of the whole EMU, forming a complete combination of power sources. Large traction power, start smooth, fast and efficient, effectively inhibit the idle and taxi protection in place and other characteristics, and with a number of system chain control, to achieve smooth operation, multi-level speed and accurate parking.

Design of a Self-Actuating, Traction Drive System for High-Speed Ratios

2003 ◽  
Author(s):  
Michael J. Harper ◽  
Donald R. Flugrad ◽  
Abir Z. Qamhiyah
Keyword(s):  
High Speed ◽  
Power Transmission ◽  
Drive System ◽  
Speed Ratio ◽  
Rolling Motion ◽  
Traction Drive ◽  
Rolling Elements ◽  
Drive Systems ◽  
Two Stages ◽  
Efficient Power

Traction drive systems offer unique advantages over geared systems. They will typically run quieter and they can be designed to eliminate all backlash. Furthermore, rolling elements are easy to manufacture and the rolling motion will produce very efficient power transmission. In this paper the authors describe a two-stage, self-actuating, traction drive system that has been fabricated to produce a speed ratio of 50:1. Given specific values for coefficients of friction, the geometry of each stage of the device must be designed to ensure self-actuation. In addition, dimensions of the drive rollers and output rings for the two stages must be selected to ensure that one stage does not cause the other stage to overrun.

scholarly journals Performance Availability Assessment of Combined Multi Power Source Traction Drive Considering Real Operational Conditions

2016 ◽  
Vol 17 (3) ◽  
pp. 179-191 ◽  
Author(s):  
Ilia Frenkel ◽  
Igor Bolvashenkov ◽  
Hans-Georg Herzog ◽  
Lev Khvatskin
Keyword(s):  
Electric Power ◽  
Power Source ◽  
Propulsion System ◽  
Operating Conditions ◽  
Transform Method ◽  
Power Sources ◽  
Traction Drive ◽  
Operational Conditions ◽  
The Impact ◽  
Availability Assessment

Abststract The present paper deals with the vehicle’s traction electric drive, consisting of several various electric power sources. One of the main requirements for such systems are the safety and sustainable operations, achieved largely the implementation of an uninterrupted supply of the vehicle’s propulsion system with an electric power. One way of realization of the required level of operational sustainability is usage of Multi Power Source Traction Drive. This type of vehicle’s propulsion systems is widely applied on the ships, trains, planes, heavy trucks. The most important impact on the sustainability of functioning of the ship’s propulsion system have operational conditions, especially for the cargo ship, operating in Arctic region. This paper presents the application of the LZ-transform method to assessing the important parameter of the vehicle’s operational sustainability - availability of the multi-state (MSS) Multi Power Source Traction Drive, which includes Diesel-Generators and Gas-Turbine-Generators considering the impact of the real operating conditions. Straightforward Markov method applied to solve this problem will require building of a system’s model with numerous numbers of states and solve a corresponding system of multiple differential equations. LZ-transform method, drastically simplified the solution.

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