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This paper goes over the fundamentals of train performance, and describes how these principles can be used to create models to simulate railway system performance and gives an overview of applications of simulation in railway system design and development.
The design of railway power supplies must account for a wide range of factors such as the performance of the rolling stock, the track alignments, the level of service to be provided as well as basic issues such as the choice of AC or DC and the level of supply security desired. The interaction between all these factors is very complex and the only really feasible way to assess proposed designs is...
This paper gives an overview of electric systems in common use, covering traction supply systems and traction equipment. The paper goes over the fundamentals of train performance, and described how these principles can be used to create models to simulate railway system performance. The paper gives an overview of applications of simulation in railway system design and development.
Electrical energy storage has a significant role to play in improving the performance of future electric traction systems. This paper proposes a new power electronics topology that integrates the energy storage power electronics with those of the inverter drive system. This topology reduces weight and component count compared with previous topologies but still allows the use of standard machines....
The London Underground Sub Surface Railway (SSR) is due for a major upgrade by 2018. The upgrade will include the procurement of new rolling stock, a new signalling control system, a significant increase in service frequencies, and a significant power supply infrastructure upgrade. Investigation of energy efficiency measures, such as optimal rolling stock power with use of coasting in the run profiles,...
Measurements from a real system are vital to validate any modelling work conducted. This paper describes measurements made on the Blackpool Tramway to analyse the energy consumed by a vehicle and assess the voltage regulation on the system. Modelling of such systems is becoming widespread to optimise power use and plan for maximum vehicle capacity. The research highlights the input of the driver’s...
This paper describes the development of a model for electrified transit systems. The model is developed for the analysis of power quality in a DC tram system. This paper presents a new, more computationally efficient modular approach to modelling electrified transit systems. The technique applied separates the train movement analysis from the electrical network analysis and uses differential equations...
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