Exploració per autor "Riera, Jordi (Riera Colomer)"
Ara es mostren els items 14-33 de 33
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Energy management strategies based on efficiency map for fuel cell hybrid vehicles
(2009-05)
Article
Accés obertThe addition of a fast auxiliary power source like a supercapacitor bank in fuel cellbased vehicles has a great potential because permits a significant reduction of the hydrogen consumption and an improvement of the vehicle ... -
Energy management strategies for fuel cell-hybrid vehicles
(2008)
Text en actes de congrés
Accés obertThis paper presents an analysis and a comparative study between three new proposed Energy Management Strategies oriented to Fuel Cell-Hybrid Vehicles (FCHVs). The vehicle in study is powered by a fuel cell and a supercapacitor ... -
Ethanol catalytic membrane reformer for direct PEM FC feeding
(2013)
Article
Accés restringit per política de l'editorialIn this paper an ethanol reformer based on catalytic steam reforming with a catalytic honeycomb loaded with RhPd/CeO2 and palladium separation membranes with an area of 30.4 cm2 has been used to generate a pure hydrogen ... -
Experimental characterization and identification of the voltage losses in an open cathode PEM fuel cell stack
(2011)
Text en actes de congrés
Accés obertFor the past 20 years remarkable progress has been made in PEM fuel cell materials, component design, production, and system power density im-provements. However, there is still a lot to be done in the field of fuel cell ... -
Experimental characterization methodology for the identification of voltage losses of PEMFC: applied to an open cathode stack
(2012)
Article
Accés obertThe objective of this study is to describe the methodology used to isolate the main voltage loss indicators through a simple and effective treatment of a current interrupt and current sweep. The voltage loss indicators are ... -
Experimental methodology for modeling water diffusion transport in a PEMFC stack with respect to membrane temperature and resistance
(Elsevier, 2008)
Text en actes de congrés
Accés obertThis work proposes an experimental methodology for modeling water diffusion transport in a PEMFC, which is applied to a commercially available fuel cell stack. The effective water vapor diffusion coefficient and its dynamical ... -
Experimental study of hydrogen purge effects on performance and efficiency of an open-cathode proton exchange membrane fuel cell system
(2013)
Article
Accés obertThe performance and efficiency of an open-cathode PEM fuel cell system in dead-ended anode (DEA) configuration and hydrogen purges is analyzed in this work. Excess water and crossed-over nitrogen in the anode decrease the ... -
Fault-tolerant MPC control of PEM fuel cells
(IFAC, 2008)
Text en actes de congrés
Accés restringit per política de l'editorialIn this paper, fault-tolerant MPC control of PEM fuel cells is addressed. MPC is a suitable control methodology to control fuel cell systems because of their multivariable and complex behaviour. Additionally, MPC is one ... -
Identification of partially known models of the Susqueda hydroelectric power plant
(Universidad Nacional del Sur, 2003-10)
Article
Accés obertThis paper presents the identification of a hydroelectric power turbine dynamics. Knowledge of power plant behaviour is fundamental to obtain reliable and efficient operation of power systems. Starting from models already ... -
Numerical Model for Polymer Electrolyte Membrane Fuel Cells with Experimental Application and Validation
(2009)
Article
Accés obertThe aim of this paper is to present a simple 3D computational model of a Polymer Electrolyte Membrane Fuel Cell (PEMFC) that simulates over time the heat distribution, energy and mass balance of the reactant gas flows in ... -
Observation of the internal states of a PEMFC anode gas channel
(2013)
Text en actes de congrés
Accés obertIn this work a non-linear, model-based state observer is developed. Dynamics of the system described by a distributed parameter, partial differential equations model. Forward and backward discretization of the model to ... -
Performance improvement by temperature control of an open-cathode PEM fuel cell system
(2013)
Text en actes de congrés
Accés obertThe work presented in this article combines experimental analysis and theoretical studies of temperature effects on the performance of an open-cathode, self-humidified PEM fuel cell system for the design of optimization ... -
Performance improvement by temperature control of an open-cathode PEM fuel cell system
(2014-06-01)
Article
Accés restringit per política de l'editorialThe work presented in this article combines experimental analysis and theoretical studies of temperature effects on the performance of an open-cathode, self-humidified PEM fuel cell system for the design of optimal control ... -
Performance improvement of a PEMFC system controlling the cathode outlet air flow
(Elsevier S.A., 2007)
Article
Accés obertThis paper presents a stationary and dynamic study of the advantages of using a regulating valve for the cathode outlet flow in combination with the compressor motor voltage as manipulated variables in a fuel cell system. ... -
Sliding Mode Strategy for PEM Fuel Cells Stacks Breathing Control Using a Super-Twisting Algorithm
(2009-01)
Article
Accés obertA second-order sliding mode strategy to control the breathing subsystem of a polymer electrolyte membrane fuel cell stack for transportation applications is presented. The controller is developed from a design model of ... -
Study of hydrogen purge effects on performance and efficiency of a PEM fuel cell system
(2012)
Text en actes de congrés
Accés obertExperimental analysis and CFD modeling is used in this work to analyze system efficiency related to hydrogen purge based water management in an open-cathode PEM fuel cell system. Excess water in a deadended anode decreases ... -
Test de interrupción de la humidificación para la diagnosis en pilas PEM
(APPICE, 2008)
Text en actes de congrés
Accés obertOne of the most demanding research topics related to the Polymer Electrolyte Membrane Fuel Cell concerns its reliability. Apart from the security aspects, it is basic to have a diagnosis of the internal state of the fuel ... -
Test de interrupción de la humidificación para la diagnosis en pilas PEM
(2008)
Text en actes de congrés
Accés restringit per política de l'editorialUno de los principales temas de investigación relacionados con las pilas de combustible del tipo de membrana de electrolito polimérico es su fiabilidad. Además de los aspectos de seguridad, es básico hacer una diagnosis ... -
Topological analysis of powertrains for refusecollecting vehicles based on real routes – Part I: Hybrid hydraulic powertrain
(2016-10-03)
Article
Accés obertIn this two-part paper, a topological analysis of powertrains for refuse-collecting vehicles (RCVs) based on the simulation of different architectures (internal combustion engine, hybrid electric, and hybrid hydraulic) on ... -
Topological analysis of powertrains for refusecollecting vehicles based on real routes – Part II: Hybrid electric powertrain
(2016-10-03)
Article
Accés obertIn this two-part paper, a topological analysis of powertrains for refuse-collecting vehicles (RCVs) based on simulation of different architectures (internal combustion engine, hybrid electric, and hybrid hydraulic) on real ...
