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Research Papers

Numerical and Hardware-In-the-Loop Tools for the Design of Very High Speed Pantograph-Catenary Systems

[+] Author and Article Information
Stefano Bruni, Giuseppe Bucca, Andrea Collina

Alan Facchinetti

 Dipartimento di Meccanica,Politecnico di Milano,Via G. La Masa, 1, 20156 Milan, Italyalan.facchinetti@polimi.it

J. Comput. Nonlinear Dynam 7(4), 041013 (Jul 10, 2012) (8 pages) doi:10.1115/1.4006834 History: Received November 30, 2011; Revised April 27, 2012; Published July 10, 2012; Online July 10, 2012

To be competitive with other transport means for a wider distance range, high-speed trains need to increase their revenue service speed. Due to this need, improving the pantograph-catenary interaction to ensure appropriate current collection in spite of the increased dynamic effects and the larger electrical power required represents one of the most serious technical issues to be solved. The aim of this paper is to discuss the use of numerical and hybrid (hardware in the loop) simulation tools in the design of new overhead lines for a speed of 360 km/h. A validation of both simulation tools is performed using line measurements as a point of comparison; then the validated simulation approaches are used to quantitatively assess the effectiveness of some catenary design options.

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Copyright © 2012 by American Society of Mechanical Engineers
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Figures

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Figure 11

Standard deviation of the contact force evaluated in the 0-30 Hz frequency range versus train speed for the C270 catenary (30 kN contact wire tension) equipped with traditional wire droppers and with elastic ring droppers

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Figure 12

Maximum catenary uplift at the suspension versus train speed for the C270 catenary (30 kN contact wire tension) equipped with traditional wire droppers and with elastic ring droppers

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Figure 1

Mechanical characteristics of catenary droppers. Upper subfigure: conductor wire dropper [9], lower subfigure: elastic ring dropper [23]

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Figure 2

Mathematical model of a pantograph with a double collector, including the deformability of the articulated frame

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Figure 3

The hardware-in-the-loop test stand

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Figure 4

The real-time catenary model

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Figure 5

Comparison of simulations and line measurements for the ATR95 pantograph and C270 catenary, speed 300 km/h; the 1/3 octave band frequency spectra of the contact force (upper subplot), and of the contact point vertical displacement (lower subplot)

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Figure 6

Comparison of simulations and line measurements for the ATR95 pantograph and C270 upgraded catenary (T = 30 kN), speed 300 km/h; the 1/3 octave band frequency spectra of the contact force (upper subplot), and of the contact point vertical displacement (lower subplot)

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Figure 7

Standard deviation of the contact force versus train speed for the C270 catenary with 20 kN and 30 kN contact wire tension

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Figure 8

Standard deviation of the contact force versus train speed, for the C270 catenary with 30 kN contact wire tension considering an alternative static preload setting (compare with Fig. 7)

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Figure 9

Schemes of one catenary span with traditional wire droppers (upper scheme) and with elastic ring droppers near suspension (lower scheme)

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Figure 10

Standard deviation of the contact force versus train speed for the C270 catenary (30 kN contact wire tension) with traditional wire droppers and with elastic ring droppers

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