Xavier Roboam

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The French national railways company (SNCF) is involved in a new project called PLATHEE (energy- efficient and environmentally friendly train platform) which aims at investigating and testing energy- efficient and environmentally friendly traction systems. In particular, the design of a hybrid locomotive called LHyDIE has been started at 2005. This paper(More)
OATAO is an open access repository that collects the work of Toulouse researchers and makes it freely available over the web where possible. Abstract—The French National Railways Company (SNCF) is interested in the design of a hybrid locomotive based on various storage devices (accumulator, flywheel, and ultracapacitor) and fed by a diesel generator. This(More)
This paper investigates the influence of recombination and self-adaptation in real-encoded Multi-Objective Genetic Algorithms (MOGAs). NSGA-II and SPEA2 are used as example to characterize the efficiency of MOGAs in relation to various recombination operators. The blend crossover, the simulated binary crossover and the breeder genetic crossover are compared(More)
In this paper, we have designed a micro-generation energy system obtained by interconnecting a wind turbine with a photovoltaic generator and characterized by very low voltage (VLV) node coupled to a battery storage and DC loads. The control strategies of the sources are based on power, voltage and current control with maximum power point tracking (MPPT).(More)
In this paper the authors have developed an isolated network for very low voltage (VLV) decentralized energy production and storage based on renewable energy (hybrid system: photovoltaic and wind). An energy based model of stand-alone hybrid photovoltaic-wind generating system is presented, using bond graph approach. An equivalent average modeling of a(More)
This paper deals with a hybrid electrical network for an aircraft in emergency operation. The principle of this network is to hybridize, through a bidirectional DC/DC converter, a high speed Ram Air Turbine (RAT) with an electrochemical Lithium Ion accumulator. A design study of DC/DC power converters, according to the voltage of the accumulator, is(More)