Integrated Simulation between Flexible Body of Catenary and Active Control Pantograph for Contact Force Variation Control

Abstract

Railway transport has been developed for a variety of requirements with a diversity of studies and technologies in recent years. In particular, the intercity railway transport that can be operated at speed of more than 350 km/h is the goal for the railway industry. Due to vibration and drag forces at high speed, contact force variation occurs between pantograph and catenary. This variation also causes instability in the pantograph and catenary interaction. In this study, multibody dynamics analysis is used to model the catenary. The integration of the catenary model and the pantograph model in the simulation flow produces contact force variations. A sinusoidal feed forward force and a simple feedback control force are applied to control the wave-like contact force fluctuations by means of active dampers. Evaluation of the combination of active control forces will produce optimized forces that may be able to maintain, thus improve the contact force variations.

Embedded Fuzzy Logic Controllers in Electric Railway Transportation Systems

“…For flow speeds over 350km/h, on special lines built and equipped for this purpose, one can find in the literature active control solutions of contact force through "classical" methods [22] [23] [24] [25] [26] or advanced methods [27], [28], [29].…”

Analysis of Contact Force Variation between Contact Wire and Pantograph Based on Multibody Dynamics

“…The previous catenary and pantograph interaction model (9) is used for the element performance analysis. In this analysis, the number of element is changed accordingly to study its convergence solution.…”

“…The same concept is applied for catenary analysis where the number of element per spacing (Esc) is changed from 5 to 20. Each spacing of the catenary is equal to the spacing between 2 holders, in this case, the span length is 50 m, and each span is supported with 10 holders (9) . Therefore, the higher the value Esc the smaller the size of one element.…”

“…The use of linear finite element formulation in modeling the overhead wire (8) does not account for the coupling effects and nonlinearities. Active control approaches via simulation have also been investigated previously (9) . While the modeling technique seemed appealing, the validation is feeble and not supported by any experimental result.…”

Detection of pantograph geometric model based on fuzzy logic and image processing

“…Bu sistemlerde arıza teşhis sistemi genel olarak iki farklı şekilde gerçekleştirilmektedir. Elektrikli trenin kullandığı elektrik enerjisinin akım ve gerilim değerleri kontrol edilerek yapılan arıza teşhis yöntemi, bilinen arıza teşhis yöntemlerinden biridir [5][6][7][8][9]. Midya ve diğ.…”