Now showing items 26-30 of 30

  • 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 ...