Browsing by Author "Husar, Attila Peter"
Now showing items 21-40 of 52
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Experimental decoupling of single cell polarization losses
(2015)
Conference report
Open AccessThe decoupling of the current sweep with the Ohmic resistance is a very powerful tool to determine the magnitude of the voltage losses inside of a fuel cell. In a time frame of seconds, the fuel cell can be diagnosed and ... -
Experimental methodology for modeling water diffusion transport in a PEMFC stack with respect to membrane temperature and resistance
(Elsevier, 2008)
Conference report
Open AccessThis 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
Open AccessThe 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 ... -
Improved supervisory controller design for a fuel cell hybrid electric vehicle
(Institute of Electrical and Electronics Engineers (IEEE), 2024-04-01)
Article
Open AccessIn this paper, a fuel cell system supervisory controller is developed for a fuel cell-based hybrid electric vehicle to safely control the interactions between powertrain components, maximize efficiency and minimize the ... -
Linear identification and model adjustment of a PEM fuel cell stack
(Elsevier, 2008)
Article
Open AccessIn 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, ... -
Load profile effect on durability of proton exchange membrane fuel cells
(2019)
Conference report
Open AccessProton Exchange Membrane Fuel Cells (PEMFC) are a promising technology for substitution of hydrocarbon powerdrives and battery based electrical supply systems. However, below-required durability is still an important factor ... -
LPV model-based fault diagnosis using relative fault sensitivity signature approach in a PEM fuel cell
(IEEE Press. Institute of Electrical and Electronics Engineers, 2010)
Conference report
Restricted access - publisher's policyIn 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
(2011-02-01)
Article
Restricted access - publisher's policyIn 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 ... -
Mathematical modeling, numerical simulation and experimental comparison of the desorption process in a metal hydride hydrogen storage system
(2018-01-01)
Conference lecture
Open Access -
Modelado dinámico y validación experimental de una pila de combustible PEM
(2008)
Conference report
Open AccessResumen: 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 ... -
Modelización y gestión térmica de una pila de combustible SOFC
(2017)
Conference report
Open Access
Covenantee: Balart EnginyersIn the present work, a dynamic lumped parameter model of the electrochemical and thermal behavior of a Solid Oxide Fuel Cell (SOFC) has been developed. The model is implemented in the MATLAB-Simulink visual programming ... -
Modelling liquid water effect on proton-exchange membrane fuel cells
(2019)
Conference report
Open AccessThis work introduces our ongoing research in developing accurate models for predicting and analyzing Proton-Exchange Membrane Fuel Cells performance. An initial model, whose response is compared with experimental data is ... -
Modelling of solid oxide electrolizer and hydrogen leak estimation
(2019)
Conference report
Open AccessSolid Oxide Elecyrolizers (SOEC) are electrochemical devises that produce hydrogen from water using the energy of an electric power source. SOEC operate at high temperatures (around 800ºC) and have efficiencies around 53% ... -
Nonlinear distributed parameter observer design for fuel cell systems
(2015-09-14)
Article
Open AccessThis paper presents the development of a nonlinear state observer to estimate the different gas species concentration profiles in a Proton Exchange Membrane Fuel Cell energy system. The selection of the estimated states ... -
Nonlinear model predictive control methodology for efficiency and durability improvement in a fuel cell power system
(2016)
Conference report
Open AccessThe main contribution of this work is the improvement of the efficiency of a PEMFC power system while guaranteeing conditions that also improve its durability. Adopting the NMPC scheme with the distributed parameter model ... -
Nonlinear observation in fuel cell systems: a comparison between disturbance estimation and High-Order Sliding-Mode techniques
(2016-11-16)
Article
Open AccessThis paper compares two Nonlinear Distributed Parameter Observers (NDPO) for the observation of a Proton Exchange Membrane Fuel Cell (PEMFC). Both NDPOs are based on the discretisation of distributed parameters models and ... -
Nonlinear predictive control for durability enhancement and efficiency improvement in a fuel cell power system
(2016)
Article
Open AccessIn this work, a nonlinear model predictive control (NMPC) strategy is proposed to improve the efficiency and enhance the durability of a proton exchange membrane fuel cell (PEMFC) power system. The PEMFC controller is based ... -
Numerical Model for Polymer Electrolyte Membrane Fuel Cells with Experimental Application and Validation
(2009)
Article
Open AccessThe 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
(2010)
Conference report
Restricted access - publisher's policyEn 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 ... -
Observation of the electrochemically active surface area in a proton exchange membrane fuel cell
(Institute of Electrical and Electronics Engineers (IEEE), 2016)
Conference report
Open AccessIn this paper a methodology for the estimation of the Electrochemically active Surface Area (ECSA) of a Proton Exchange Membrane Fuel Cell (PEMFC) is developed. Specifically, the ECSA in the Cathode Catalyst Layer (CCL) ...
