• Development of control systems and state observers for efficiency and durability improvement in PEM fuel cell based systems 

    Luna Pacho, Julio Alberto (Universitat Politècnica de Catalunya, 2017-02-27)
    Tesis
    Acceso abierto
    Proton exchange membrane (PEM) fuel cells, which use hydrogen as fuel, provide high power densities while operating at lower temperatures, reducing the cost of materials and maintenance. PEM fuel cells are suitable for a ...
  • Distributed parameter nonlinear state observer with unmatched disturbance estimation for PEMFC systems 

    Luna Pacho, Julio Alberto; Usai, Elio; Husar, Attila Peter; Serra, Maria (2015)
    Texto en actas de congreso
    Acceso abierto
    In this paper a nonlinear state observer based on a distributed parameter model is proposed for a proton exchange membrane fuel cell (PEMFC). The estimation technique is implemented using a model-based nonlinear observer ...
  • Nonlinear distributed parameter observer design for fuel cell systems 

    Luna Pacho, Julio Alberto; Husar, Attila Peter; Serra, Maria (2015-09-14)
    Artículo
    Acceso abierto
    This 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 

    Luna Pacho, Julio Alberto; Jemei, Samir; Yousfi-Steiner, Nadia; Husar, Attila Peter; Serra, Maria (2016)
    Texto en actas de congreso
    Acceso abierto
    The 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 

    Luna Pacho, Julio Alberto; Usai, Elio; Husar, Attila Peter; Serra, Maria (2016-11-16)
    Artículo
    Acceso abierto
    This 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 

    Luna Pacho, Julio Alberto; Jemei, Samir; Yousfi-Steiner, Nadia; Husar, Attila Peter; Serra, Maria; Hissel, Daniel (2016)
    Artículo
    Acceso abierto
    In 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 ...
  • Nonlinear predictive control for the concentrations profile regulation in a PEM fuel cell anode gas channel 

    Luna Pacho, Julio Alberto; Ocampo-Martínez, Carlos; Serra, Maria (Institute of Electrical and Electronics Engineers (IEEE), 2014)
    Texto en actas de congreso
    Acceso abierto
    In this work, a nonlinear model predictive control (NMPC) strategy is proposed to regulate the concentrations of the different gas species inside a Proton Exchange Membrane Fuel Cell (PEMFC) anode gas channel. The purpose ...
  • Nonlinear predictive control for the concentrations profile regulation under unknown reaction disturbances in a fuel cell anode gas channel 

    Luna Pacho, Julio Alberto; Ocampo-Martínez, Carlos; Serra, Maria (2015-05)
    Artículo
    Acceso abierto
    In this work, a nonlinear model predictive control (NMPC) strategy is proposed to regulate the concentrations of the different gas species inside a Proton Exchange Membrane Fuel Cell (PEMFC) anode gas channel. The purpose ...
  • Nonlinear predictive control for the four-tanks plant flow regulation 

    Luna Pacho, Julio Alberto; Acevedo Valle, Juan M.; Rosanas Boeta, Noe; Costa Castelló, Ramon (2014)
    Texto en actas de congreso
    Acceso restringido por política de la editorial
    The four-tanks system is well-known and a considerable number of works study it in the existent literature. This work proposes a nonlinear model predictive control (NMPC) design to regulate the water ¿ow inputs of the four ...
  • Observation of the electrochemically active surface area in a proton exchange membrane fuel cell 

    Luna Pacho, Julio Alberto; Usai, Elio; Husar, Attila Peter; Serra, Maria (Institute of Electrical and Electronics Engineers (IEEE), 2016)
    Texto en actas de congreso
    Acceso abierto
    In 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) ...
  • Observation of the internal states of a PEMFC anode gas channel 

    Luna Pacho, Julio Alberto; Batlle Arnau, Carles; Kunusch, Cristian; Riera, Jordi (Riera Colomer); Sarmiento Carnevali, María Laura; Serra, Maria (2013)
    Texto en actas de congreso
    Acceso abierto
    In 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 ...
  • State estimation in fuel cell systems : a sliding mode approach 

    Luna Pacho, Julio Alberto; Usai, Elio; Husar, Attila Peter; Serra, Maria (2015)
    Texto en actas de congreso
    Acceso abierto
    In this paper, a nonlinear distributed parameter observer (NDOP) is developed for the estimation of the internal condi-tions of a proton exchange membrane fuel cell (PEMFC). In particular, the estimation of the internal ...
  • State Observers Design for PEMFC Systems 

    Luna Pacho, Julio Alberto (Universitat Politècnica de Catalunya, 2014-06)
    Projecte Final de Màster Oficial
    Acceso restringido por decisión del autor
    A series of nonlinear state observers are developed to estimate unmeasurable variables in a Proton Exchange Membrane Fuel Cell (PEMFC) system. A study of the most relevant variables to estimate which will improve the e ...
  • State observers design for PEMFC systems 

    Luna Pacho, Julio Alberto; Husar, Attila Peter; Serra, Maria (2014)
    Texto en actas de congreso
    Acceso restringido por política de la editorial
    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 ...