scholarly journals Improving the safety of train lighting devices in curves

2021 ◽  
Vol 2094 (5) ◽  
pp. 052061
Author(s):  
N O Frolov ◽  
E M Elkin
Keyword(s):  
Light Beam ◽  
Rolling Stock ◽  
Angle Of Deviation

Abstract The article presents a system for correcting the direction of the light beam of a rolling stock searchlight in curved sections of the track. The dependence of the angle of deviation of the axis of the light beam of the searchlight on the angle of inclination of the trolley is determined. The principle of correction of the light beam of a rolling stock searchlight using a matrix LED searchlight is described.

A new way to control axis of headlight light beam in curves

2020 ◽  
pp. 68-74
Author(s):  
Nikolay Olegovich Frolov ◽  
◽  
Evgeniy Mikhaylovich Elkin ◽  
Keyword(s):  
Light Beam ◽  
Deflection Angle ◽  
Beam Axis ◽  
Rolling Stock ◽  
The Deflection Angle

The paper presents a system of changing the deflection angle of an axis of headlight light beam according to the angle of inclination of the rolling stock undercarriage in curves. The authors have carried out the analysis of the existing systems of adjusting the direction of the locomotive headlight light beam. The authors have also determined the dependencies of deflection angle of the headlight light beam axis from the angle of inclination of undercarriage in curves and have calculated possible angles of light beam axis deflection. As a result, the paper proposes and describes an algorithm of a system for changing the deflection angle of matrix headlight light beam axis.

DUAL LIGHT BEAM MODULATION OF PHOTOCARRIER LIFETIME IN INTRINSIC a-Si:H

1981 ◽  
Vol 42 (C4) ◽  
pp. C4-597-C4-600 ◽  
Author(s):  
P. D. Persans ◽  
H. Fritzsche
Keyword(s):  
Light Beam ◽  
Beam Modulation

Analysis and Design of 3.3 kV IGBT Based Three-Level DC/DC Converter with High-Frequency Isolation and Current Doubler Rectifier

2009 ◽  
Vol 25 (25) ◽  
pp. 103-108
Author(s):  
Dmitri Vinnikov ◽  
Tanel Jalakas ◽  
Indrek Roasto
Keyword(s):  
High Voltage ◽  
High Frequency ◽  
Power Converter ◽  
Rolling Stock ◽  
Analysis And Design ◽  
Auxiliary Power ◽  
Igbt Modules ◽  
Isolation Transformer ◽  
New Generation ◽  
Generation Power

Analysis and Design of 3.3 kV IGBT Based Three-Level DC/DC Converter with High-Frequency Isolation and Current Doubler RectifierThe paper presents the findings of a R&D project connected to the development of auxiliary power supply (APS) for the high-voltage DC-fed rolling stock applications. The aim was to design a new-generation power converter utilizing high-voltage IGBT modules, which can outpace the predecessors in terms of power density, i.e. to provide more power for smaller volumetric space. The topology proposed is 3.3 kV IGBT-based three-level neutral point clamped (NPC) half-bridge with high-frequency isolation transformer and current doubler rectifier that fulfils all the targets imposed by the designers. Despite an increased component count the proposed converter is very simple in design and operation. The paper provides an overview of the design with several recommendations and guidelines. Moreover, the simulation and experimental results are discussed and the performance evaluation of the proposed converter is presented.

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