Studies of the electromechanical wear of contact pairs in the current collection devices of electric transports

Sidorov, O. A.; Philippov, Victor; Ступаков, С. А.

doi:10.3103/s1068366615050128

Cited by 7 publications

(4 citation statements)

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“…Electricity is transmitted to the traction rolling stock by means of an electric sliding contact, while for high-speed movement the magnitude of the traction current flowing through a pair of "contact wire -contact element" can reach 3.5 kA. Such current values cause increased heating of the elements of the contact pairs of current collector devices, and its thermal effect significantly increases electrical and electromechanical wear [3]. At Omsk State Transport University a program and methodology for conducting experimental studies of contact pairs of electric current collection devices has been developed and successfully tested.…”

Section: Methodsmentioning

confidence: 99%

“…It should be noted that the mathematical model given in [3] takes into account the majority of those shown in Fig. 1 factors, however, its use for predicting wear under conditions of high-speed movement will not be sufficiently accurate due to the lack of consideration of the aerodynamic effects of air flow and the speed of movement of rolling stock on processes occurring in an electric sliding contact.…”

Section: Methodsmentioning

confidence: 99%

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Modeling the mechanical wear of the contact elements of pantograph during high-speed movement

Philippov

Smerdin

2020

E3S Web Conf.

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The use of contact elements with an extended service life is one of the most economical and least costly ways to ensure reliable, economical and environmentally friendly transmission of electricity to rolling stock. To evaluate the service life in OSTU, a methodology for conducting experimental studies of contact pairs of pantograph has been developed and successfully tested, involving bench tests for each pair of contact materials “contact insert - contact wire” in order to determine their optimal combination to reduce wear and increase service life. Assessment of the amount of wear and prediction of the life of the contact elements are made, including using mathematical modeling. The purpose of this article is to improve the mechanical component of the wear model of the contact elements of pantograph in high-speed conditions. The results of experimental studies and theoretical calculations of the mechanical wear of contact elements are presented. The analysis of the graphs allows us to conclude that it is possible to use an improved mathematical model for modeling the mechanical component of the wear process of the elements of contact pairs with a maximum error value of not more than 5%.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Modeling the mechanical wear of the contact elements of pantograph during high-speed movement

Philippov

Smerdin

2020

E3S Web Conf.

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“…Dependence of wear rate from contact force γ(Pcf) is a U-shaped curve, the shape of the curve is determined by the contact materials, current density in the contact and other factors. For each pair of materials in contact, the U-shaped curve is determined by the results of experimental studies [2].…”

Section: Theorymentioning

confidence: 99%

Improvement of automatic control system for high-speed current collectors

Sidorov

Goryunov

Golubkov

2018

J. Phys.: Conf. Ser.

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Abstract. The article considers the ways of regulation of pantographs to provide quality and reliability of current collection at high speeds. To assess impact of regulation was proposed integral criterion of the quality of current collection, taking into account efficiency and reliability of operation of the pantograph. The study was carried out using mathematical model of interaction of pantograph and catenary system, allowing to assess contact force and intensity of arcing at the contact zone at different movement speeds. The simulation results allowed us to estimate the efficiency of different methods of regulation of pantographs and determine the best option.

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“…Most of the high-speed railway lines operate electric rolling stock, which has high requirements for the reliability of all its components, including pantographs, therefore ensuring reliable and economical current collection is one of the main tasks when organizing high-speed traffic [1,2].…”

Section: Introductionmentioning

confidence: 99%

The use of PI-algorithm for high-speed electric rolling stock automatic control system

Sidorov,

Smerdin,

Mikhailov

et al. 2024

E3S Web Conf.

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The article is devoted to analysis of automatic control systems used to optimize current collection on high-speed railway electric rolling stock. A classification of automatic control systems has been developed. The use of automatic control systems that change the pantograph static force can significantly improve the quality of the current collection. However, their use changes the compression of the elastic elements of the panhead suspension, which can ultimately lead to its complete compression and breakaways. To solve this problem, authors propose using intra-spring pneumatic elements in panhead suspension. The automatic control system must simultaneously control the pantograph static force and the panhead suspension static characteristics. The authors proposed and described an automatic control system of the pantograph contact force and the panhead suspension static characteristics. To test the prospects of the proposed automatic control system, a three-mass mathematical model of a pantograph equipped with intra-spring pneumatic elements in panhead suspension has been developed and implemented in the MATLAB Simulink software package. The obtained results indicate the possibility of using intra-spring pneumatic elements in panhead suspension when using an automatic control system. It allows you to avoid vertical impacts causing a sharp increase in contact force and breakaways of the panhead.

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Studies of the electromechanical wear of contact pairs in the current collection devices of electric transports

Cited by 7 publications

References 0 publications

Modeling the mechanical wear of the contact elements of pantograph during high-speed movement

Modeling the mechanical wear of the contact elements of pantograph during high-speed movement

Improvement of automatic control system for high-speed current collectors

The use of PI-algorithm for high-speed electric rolling stock automatic control system

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