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This paper presents a technique on how two simulators at different levels of abstraction can interact for the design and sizing of a booster power unit. The system is constituted by an ultracapacitor bank and a converter to boost voltage sags in a railway application. Full steps to determine Thevenin equivalent circuit of a dc railway is obtained based on exact modeling of the system components. Example...
This paper discusses the track layout of a light rail vehicle application (LRV) to be simulated along with an Energy Storage System (ESS) aiming to counteract voltage sags. It also describes the train modeling technique used in a train run simulator and a network simulator including the ESS. It compares experimental results with simulation. A sensitivity analysis to ESS and algorithm parameters is...
The article describes the design of an electric train network simulator. The proposed software aims to help designing electric train power supply networks. It consists of two combined simulators namely a run time simulator and a network simulator. A case study of an energy Storage System (ESS) project is presented to demonstrate its usefulness in estimating and calculating energy savings for a Sacramento,...
A modeling technique of a subway network is performed in order to quantify the effect of insulated negative current rail on resonance frequencies. A DC track circuit is modeled by means of transmission line modeling (TLM) approach to perform line current and voltage calculation. Impedance and admittance required by TLM equations are first derived. System impedance is expressed in terms of internal...
This paper describes the energy minimization process of the longitudinal profile between two metro station platforms. Two algorithms are discussed: the genetic algorithms (GAs) with the profile coding process, and the Hook and Jeeves (H&J) direct search algorithm. GAs is a novelty for subway tunnel profile optimization. The results show that GAs perform better than the H&J algorithm
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