Handbook of Railway Vehicle Dynamics

Iwnicki, Simon; Spiryagin, Maksym; Cole, Colin; McSweeney, Tim

doi:10.1201/9780429469398

Cited by 75 publications

(25 citation statements)

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“…The main functions of a railway wheel are guiding the wheelsets and, consequently, the entire rail vehicle along the track, as well as the distribution of normal and traction forces [3]. In most cases, the wheels of rail vehicles are rigidly mounted on a common axle and they constitute a wheelset that forms an unsprung mass, and its specificity of movement consists in selfcentering due to kinematic track guidance.…”

Section: Characteristic Of Wheels Of Rail Vehiclesmentioning

confidence: 99%

Materials used in the construction of rail vehicle wheels

Słowiński¹

2021

Rail Vehicles/Pojazdy Szynowe

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Przedmiotem niniejszego tekstu jest opis materiałów konstrukcyjnych stosowanych w budowie kół pojazdów szynowych. Przedstawiono charakterystykę tego elementu konstrukcyjnego, a także jego wymagania funkcjonalne oraz materiałowe. W dalszej części zaprezentowano opis powszechnie używanych stali węglowych oraz alternatywnych materiałów konstrukcyjnych, takich jak staliwa, żeliwa ADI czy stopy aluminium, które w założeniu miałyby ograniczać zużywanie pary ciernej koło-szyna oraz zmniejszać poziom emitowanego hałasu.

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Section: Characteristic Of Wheels Of Rail Vehiclesmentioning

confidence: 99%

Materials used in the construction of rail vehicle wheels

Słowiński¹

2021

Rail Vehicles/Pojazdy Szynowe

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“…tra in pw r = 0.5 MW tr a in p w r = 1 M W t r a in p w r = 1 . 5 It is possible to identify a correlation between the capacity improvement, in percentage, and the limit for train power factor. These results are presented in Table 4.…”

Section: Mobile Reactive Power Compensationmentioning

confidence: 99%

“…Regarding the electrification aspects, generally the railway infrastructure capacity is directly affected by the current collection quality of the electric train, which is normally determined by both the mechanical and electrical parts. The mechanical part concerns the train-infrastructure interactions, like pantograph-catenary [5,6], and the wheel-rail [7], which determines the stability of electric transmission and is a source of electrical issues. Due to the inductive characteristic of railway transmission line, this will directly affect the quality of supply of electric trains, being also a source of electrical issues.…”

Section: Introductionmentioning

confidence: 99%

New Reactive Power Compensation Strategies for Railway Infrastructure Capacity Increasing

et al. 2020

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In AC railway electrification systems, the impact of reactive power flow in the feeding voltage magnitude is one aspect contributing to the quality of supply degradation. Specifically, this issue results in limitations in the infrastructure capacity, either in the maximum number of trains and in maximum train power. In this paper, two reactive power compensation strategies are presented and compared, in terms of the theoretical railway infrastructure capacity. The first strategy considers a static VAR compensator, located in the neutral zone and compensating the substation reactive power, achieving a maximum capacity increase up to 50% without depending on each train active power. The second strategy adapts each train reactive power, achieving also a capacity increase around 50%, only with an increase of the train apparent power below 10%. With a smart metering infrastructure, the implementation of such compensation strategy is viable, satisfying the requirements of real-time knowledge of the railway electrification system state. Specifically, the usage of droop curves to adapt in real time the compensation scheme can bring the operation closer to optimality. Thus, the quality of supply and the infrastructure capacity can be increased with a mobile reactive power compensation scheme, based on a smart metering framework.

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“…The reduction of operation and maintenance (O&M) costs and the minimization of incidents, which cause service delays and traffic disruption, brings very important challenges for rail transport in order to address modern society demands and to increase its attractiveness and competitiveness with respect to other means of transportation. A number of studies have been developed to understand the influence of train operations on the response of the infrastructure [2][3][4][5][6][7][8][9][10]. Other authors have devoted their attention to the detailed representation of the vehicletrack interaction using co-simulation methodologies encompassing multibody and finite element formulations [11].…”

Section: Introductionmentioning

confidence: 99%