A modal coordinate catenary model for the real-time simulation of the pantograph-catenary dynamic interaction

Gregori, S.; Tur, M.; Pedrosa, Ana M.; Tarancón, J. E.; Fuenmayor, F. J.

doi:10.1016/j.finel.2019.05.001

Cited by 15 publications

(9 citation statements)

References 19 publications

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“…This new approach produced higher accuracy results compared to results obtained with conventional finite element strategies. Simulation results showed that the proposed method can be used to perform pantograph HIL tests [88]. In his study, Koyoma investigated faults caused by the wear of the pantograph contact strip and the upward movement of the pantograph.…”

Section: Solution Methods Used In Pantograph-catenary Systems According To the Type Of Faultmentioning

confidence: 99%

Katener-Pantograf Etkileşimi İçin Elektrikli Tren Uygulama Çalışması

Parlakyıldız¹,

Gençoğlu²,

Cengiz³

2020

European Journal of Science and Technology

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Today, electric rail systems that use clean energy and are a fast and reliable means of transportation are used more because of their efficiency. The main purpose of new studies investigating pantograph catenary interaction in Electric Rail Systems is to detect malfunctions. With the spread of high-speed trains in electric rail systems, malfunctions occur in pantograph and catenary systems operating under high current and high voltage. The contact force of the pantograph-catenary system erodes the pantograph surface and arcs occur. For this reason, periodic control is mandatory in pantograph-catenary systems. In this study, new, effective, sensitive, stable, real-time applicable and contactless condition monitoring, analysis, control, and diagnostic methods were investigated for pantographcatenary systems that provide energy transmission from the electric line to the locomotive in electric trains. A literature search and study application after has been carried out for modeling a pantograph-catenary system and analysis of system parameters, instantaneous control of the contact force between the pantograph and catenary to diagnose malfunctions in the pantograph-catenary system. It has been observed that pantograph-catenary interaction is negatively affected and the quality of energy transmission decreases if the system parameters change for any reason. In pantograph-catenary systems, the importance of periodic pantograph control, which will ensure the stable and efficient operation of the system, is understood if the parameters change. Because changes in parameters cause malfunctions. Therefore, periodic control and continuous monitoring of the system is required.

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Section: Solution Methods Used In Pantograph-catenary Systems According To the Type Of Faultmentioning

confidence: 99%

Katener-Pantograf Etkileşimi İçin Elektrikli Tren Uygulama Çalışması

Parlakyıldız¹,

Gençoğlu²,

Cengiz³

2020

European Journal of Science and Technology

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“…The hardware-in-the-loop technique has been widely developed to couple a mimic catenary and realistic pantograph [19], which provide more convincing measured results to analyse the pantograph behaviour. To improve the simulation efficiency, some simplifications are made based on the idea of moving mesh [20], [21] and linearisation [22] without affecting the simulation accuracy. Base on numerical models, the influence of some critical parameters, such as the tension [23], pantograph interval [24], and catenary geometry [25] on the interaction performance are analysed.…”

Section: B Literature Reviewmentioning

confidence: 99%

Assessment of the High-Frequency Response in Railway Pantograph-Catenary Interaction Based on Numerical Simulation

Song

Rönnquist

Nåvik

2020

IEEE Trans. Veh. Technol.

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The numerical model is a well-acknowledged tool to evaluate railway pantograph-catenary interaction performance. The current standard restricts most current simulation tools by a cutoff frequency of 20 Hz. This low-frequency range of interest cannot fully describe the current collection quality of pantographcatenary. This paper includes simulation with cutoff frequencies up to 200 Hz to investigate the high-frequency behaviour of pantograph-catenary interaction. The reference model of pantograph-catenary in the benchmark is taken as the analysis object. Firstly, the effect of key simulation parameters of the resulting contact force is investigated. A small element length in the finite element model is proposed to prevent the frequency range of interest being contaminated by the numerical error. The contact stiffness has an opposite effect on the contact force in low and high-frequency ranges. Then the source and the amplification factor of high-frequency components of contact force are investigated. The results show that the half and quarter of the dropper/steady arm interval length presents the primary source of high-frequency components of the contact force. The corresponding wavelength can also be found in the high-order modes of the catenary. Finally, a variable time step procedure is also proposed to capture the contact loss occurring at high frequencies accurately. The comparison of the results between the variable and constant time steps indicates that the traditional constant time step may result in errors when calculating the contact loss duration.

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“…Under this circumstance, the relationship between the interval of double pantographs and the running speed can be expressed by Eq. (11).…”

Section: Mechanism Of Deterioration Of Trailing Pantograph Current Collection Qualitymentioning

confidence: 99%

“…The measurement data is also collected to validate the validity of numerical models [8]. In order to improve the computational efficiency, the moving mesh method [9], [10] and modal coordinate model [11] are widely used. The importance of damping to improve to structural performance has been widely acknowledged [12].…”

Section: Introductionmentioning

confidence: 99%

Effective Measures to Improve Current Collection Quality for Double Pantographs and Catenary Based on Wave Propagation Analysis

Zhao

Song

Liu

2020

IEEE Trans. Veh. Technol.

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The pantograph installed on the train roof is responsible for collecting the electrical energy via the sliding contact with the catenary constructed along the railroad. To enhance the carrying capacity of the high-speed train, multiple pantographs are normally mounted on the EMU (Electrical Multiple Unit train) to interact simultaneously with the catenary. Especially in China, the double pantographs-catenary interaction is gradually becoming the mainstream in the newly built highspeed network. The biggest challenge of double-pantograph operation is the deterioration of the current collection quality of the trailing pantograph. The mechanical wave excited by the leading pantograph propagates along the contact wire and disturbs the trailing pantograph. This paper attempts to propose effective measures to improve the current collection quality of the trailing pantograph. To improve the understanding of the wave propagation in the contact wire excited by two pantographs, the double pantographs-catenary model is established using a FEM (Finite Element Method) approach. Through the analysis of the contact wire uplift response excited by a single moving force, the optimal interval of double pantographs is discussed. The results indicate that the bad interval appears at the velocity peak of the contact wire uplift, whereas, the good interval appears at the valley value of the contact wire uplift velocity. Based on this idea, the formula of optimal interval of double pantographs is proposed, and its validity is verified using the parameters of the European and China high-speed networks. Then the damper is introduced to the steady arm to reduce the wave intensity. The simulation results show that the slight steady arm damping has a positive effect on the performance of the double pantographs-catenary interaction.

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A modal coordinate catenary model for the real-time simulation of the pantograph-catenary dynamic interaction

Cited by 15 publications

References 19 publications

Katener-Pantograf Etkileşimi İçin Elektrikli Tren Uygulama Çalışması

Katener-Pantograf Etkileşimi İçin Elektrikli Tren Uygulama Çalışması

Assessment of the High-Frequency Response in Railway Pantograph-Catenary Interaction Based on Numerical Simulation

Effective Measures to Improve Current Collection Quality for Double Pantographs and Catenary Based on Wave Propagation Analysis

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