Now showing items 16-30 of 30

  • Linear identification and model adjustment of a PEM fuel cell stack 

    Husar, Attila Peter; Kunusch, Cristian; Puleston, Paul; Mayosky, Miguel Á.; Moré, J.J. (Elsevier, 2008)
    Article
    Open Access
    In the context of fuel cell stack control a mayor challenge is modeling the interdependence of various complex subsystem dynamics. In many cases, the states interaction is usually modeled through several look-up tables, ...
  • LPV model-based fault diagnosis using relative fault sensitivity signature approach in a PEM fuel cell 

    Lira Ramírez, Salvador de; Puig Cayuela, Vicenç; Quevedo Casín, Joseba Jokin; Husar, Attila Peter (IEEE Press. Institute of Electrical and Electronics Engineers, 2010)
    Conference report
    Restricted access - publisher's policy
    In this paper, a model-based fault diagnosis methodology for PEM fuel cell systems is presented. The methodology is based on computing residuals using a LPV observer. Fault detection is based on using adaptive threshold ...
  • LPV Observer design for PEM fuel cell system: Application to fault detection 

    Lira Ramírez, Salvador de; Puig Cayuela, Vicenç; Quevedo Casín, Joseba Jokin; Husar, Attila Peter (2011-02-01)
    Article
    Restricted access - publisher's policy
    In this paper, the modelling of an energy generation system based on polymer electrolyte membrane fuel cell (PEMFC) system through a parameter varying approach (LPV model), that takes in to account model parameter variation ...
  • Modelado dinámico y validación experimental de una pila de combustible PEM 

    Husar, Attila Peter; Kunusch, Cristian; Puleston, Paul; Mayosky, Miguel Á. (2008)
    Conference report
    Open Access
    Resumen: En el presente trabajo se desarrolla un modelo dinámico apto para el diseño de control de un sistema de celdas de combustible experimental tipo PEM (Polymer Electrolyte Membrane). El sistema bajo análisis está ...
  • Numerical Model for Polymer Electrolyte Membrane Fuel Cells with Experimental Application and Validation 

    Alonso Mora, Javier; Husar, Attila Peter; Serra, Maria; Riera Colomer, Jordi (2009)
    Article
    Open Access
    The 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 ...
  • Observador de estado de un sistema de generación de energía de tipo celda de combustible PEM mediante un modelo lineal variante 

    Lira Ramírez, Salvador de; Puig Cayuela, Vicenç; Quevedo Casín, Joseba Jokin; Husar, Attila Peter (2010)
    Conference report
    Restricted access - publisher's policy
    En este trabajo se presenta el modelado de un sistema generador de energía basado en pilas de combustible PEM mediante un modelo variante con el punto de operación (modelo LPV). Dicho modelo ha sido obtenido mediante la ...
  • Performance improvement by temperature control of an open-cathode PEM fuel cell system 

    Strahl, Stephan; Perrier, Michel; Husar, Attila Peter; Riera Colomer, Jordi; Serra, Maria (2013)
    Conference report
    Open Access
    The 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 

    Strahl, Stephan; Husar, Attila Peter; Puleston, Paul Federico; Riera Colomer, Jordi (2014-06-01)
    Article
    Restricted access - publisher's policy
    The 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 indicators for the dynamics modeling and control of PEMFC systems 

    Husar, Attila Peter (Universitat Politècnica de Catalunya, 2012-03-07)
    Doctoral thesis
  • Propulsión del Segway RMP 200 mediante pilas de combustible tipo PEM 

    Asunción Escorsa, Enric; Castañeda Mañe, Eduard; Husar, Attila Peter (2011)
    Conference report
    Open Access
    Utilizando las últimas innovaciones en las tecno-logias de pilas de combustible y en el de almace-namiento de hidrogeno disponibles en el mercado, en este trabajo se pretende equiparar las presta-ciones de un prototipo a ...
  • Robust LPV model-based sensor fault diagnosis using relative fault sensitivity signature and residual directions approaches in a PEM fuel cell 

    Lira Ramírez, Salvador de; Puig Cayuela, Vicenç; Quevedo Casín, Joseba Jokin; Husar, Attila Peter (2010)
    Conference report
    Open Access
    In this paper, a model-based fault diagnosis methodology for PEM fuel cell systems is presented. The methodology is based on computing residuals using an LPV observer. Sensor fault detection faces the problem of robustness ...
  • State observers design for PEMFC systems 

    Luna Pacho, Julio Alberto; Husar, Attila Peter; Serra, Maria (2014)
    Conference report
    Restricted access - publisher's policy
    This work presents the development of a nonlinear state observer to estimate the values of the different gas species concentration profiles in a Proton Exchange Membrane Fuel Cell (PEMFC) energy system. The selection of ...
  • Study of hydrogen purge effects on performance and efficiency of a PEM fuel cell system 

    Strahl, Stephan; Husar, Attila Peter; Riera Colomer, Jordi (2012)
    Conference report
    Open Access
    Experimental 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 ...
  • Water transport study in high temperature fuel cell stack 

    Bezmalinovic, Dario; Husar, Attila Peter (2012)
    Conference report
    Open Access
    This work presents analysis of water transport phenomena in the 120 Wel high temperature PEM fuel cell stack. Phosphoric acid doped PBI membranes are known for their abilities to work with dry gases; however water in the ...
  • Water transport study in high temperature proton exchange membrane fuel cell stack 

    Bezmalinovic, Dario; Strahl, Stephan; Roda Serrat, Vicente; Husar, Attila Peter (2014)
    Article
    Open Access
    A study of water transport in a high temperature phosphoric acid doped polybenzimidazole (PBI) membrane fuel cell stack is reported. Tests with different stoichiometries of dry cathode and different humidity levels of anode ...