Recent Submissions

  • Gas detection using LMR-Based optical fiber sensors 

    Dreyer, Julián José; Ozcariz Celaya, Aritz; Ascorbe Muruzabal, Joaquín; Zubiate Orzanco, Pablo; Vitoria Pascual, Ignacio; Martelli, Cicero; Cardozo da Silva, Jean Carlos; Ruiz Zamarreño, Carlos Upna Orcid (The Institution, 2018)   Artículo / Artikulua  OpenAccess
    This work presents a first approach to the utilization of Lossy Mode Resonance (LMR) based optical fiber sensors for gas detection. The optical sensor is based on a SnO2 thin-film fabricated onto the core of cladding ...
  • Strain sensing based on resonant states in 2D dielectric photonic quasicrystals 

    Andueza Unanua, Ángel María Upna Orcid; Pérez Conde, Jesús Upna Orcid; Sevilla Moróder, Joaquín Upna Orcid (Optica, 2021)   Artículo / Artikulua  OpenAccess
    This paper reports the numerical and experimental study of the strain sensing effect of bidimensional quasiperiodic structures made with dielectric cylinders. Structures of around 100 cylinders arranged following a Penrose ...
  • A dual-wavelength fiber laser sensor with temperature and strain discrimination 

    Sánchez-González, Arturo; Pérez Herrera, Rosa Ana Upna Orcid; Roldán Varona, Pablo; Durán Escudero, Miguel; Rodríguez Cobo, Luis; López Higuera, José Miguel; López-Amo Sáinz, Manuel Upna Orcid (MDPI, 2022)   Artículo / Artikulua  OpenAccess
    This work presents a dual-wavelength C-band erbium-doped fiber laser assisted by an artificial backscatter reflector. This fiber-based reflector, inscribed by femtosecond laser direct writing, was fabricated into a single ...
  • Analysis of inter-train wireless connectivity to enable context aware rail applications 

    Picallo Guembe, Imanol Upna Orcid; López Iturri, Peio Upna Orcid; Celaya Echarri, Mikel; Azpilicueta Fernández de las Heras, Leyre Upna Orcid; Astrain Escola, José Javier Upna Orcid; Falcone Lanas, Francisco Upna Orcid (Springer, 2021)   Contribución a congreso / Biltzarrerako ekarpena
    Train systems are fundamental players within multi-modal transit systems, providing efficient transportation means for passengers and goods. In the framework of Smart Cities and Smart Regions, providing context aware ...
  • Gender analysis on the Ph.D. theses defended in Spain in the field of Optics and Photonics 

    Pérez Herrera, Rosa Ana Upna Orcid; Baralida Tomás, María; Santamaría, Beatriz; Heras, Alba de las; Benedi García, Clara; Gómez Varela, Ana Isabel; Delgado Pinar, Martina; González Fernández, Verónica (IEEE, 2022)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    Unconscious perceptions and decisions are influenced by gender bias. In this work, we provide an exhaustive data analysis of the Ph.D. theses defended in the field of optics and photonics in Spain by filtering key descriptors ...
  • Applied method to model the thermal runaway of lithium-ion batteries 

    Lalinde Sainz, Iñaki; Berrueta Irigoyen, Alberto Upna Orcid; Sanchis Gúrpide, Pablo Upna Orcid; Ursúa Rubio, Alfredo Upna Orcid (IEEE, 2021)   Contribución a congreso / Biltzarrerako ekarpena
    The thermal runaway (TR) is one of the most dangerous phenomena related to lithium-ion batteries. For this reason, there are different proposals in the literature for its modelling. Most of these proposed models take into ...
  • Zero-loss switching in DC-DC series resonant converters under discontinuous conduction mode 

    Elizondo Martínez, David Upna Orcid; Barrios Rípodas, Ernesto Upna Orcid; Sanchis Gúrpide, Pablo Upna Orcid (IEEE, 2021)   Contribución a congreso / Biltzarrerako ekarpena
    Many thriving applications where isolation is required, such as traction and EV fast charging, implement solid-state transformers (SST). Half-cycle discontinuous-conduction-mode series resonant converters (HC-DCM-SRC) are ...
  • Incremental capacity analysis of lithium-ion second-life batteries from electric vehicles under cycling ageing 

    Braco Sola, Elisa Upna; San Martín Biurrun, Idoia Upna Orcid; Sanchis Gúrpide, Pablo Upna Orcid; Ursúa Rubio, Alfredo Upna Orcid (IEEE, 2021)   Contribución a congreso / Biltzarrerako ekarpena
    Nowadays, the reuse of batteries from electric vehicles is considered a promising solution to benefit from their remaining energy and extend their lifespan. Yet, the economic viability of these second-life batteries is ...
  • Analysis of a CIS based PV generator versus a multicrystalline generator under outdoor long-term exposure 

    Parra Laita, Íñigo de la Upna Orcid; Guerra Menjívar, Moisés Roberto; Marcos Álvarez, Javier Upna Orcid; García Solano, Miguel Upna Orcid; Marroyo Palomo, Luis Upna Orcid (IEEE, 2021)   Contribución a congreso / Biltzarrerako ekarpena
    The worldwide growth of the PV market has been almost exponential during the last years. Together with conventional crystalline (c-Si) PV modules, “new” commercially available PV technologies such as copper indium ...
  • DC capacitance reduction in photovoltaic inverters based on PV voltage feed-forward compensation 

    Urtasun Erburu, Andoni Upna Orcid; Sanchis Gúrpide, Pablo Upna Orcid; Marroyo Palomo, Luis Upna Orcid (IEEE, 2021)   Contribución a congreso / Biltzarrerako ekarpena
    In the case of photovoltaic (PV) inverters, an adequate input voltage regulation is fundamental to maximize or limit the power. When employing the traditional control, the input capacitance requires to be oversized in order ...
  • Dynamic modeling and simulation of a pressurized alkaline water electrolyzer: a multiphysics approach 

    Iribarren Zabalegui, Álvaro Upna; Barrios Rípodas, Ernesto Upna Orcid; Ibaiondo, Harkaitz; Sánchez-Ruiz, Alain; Arza, Joseba; Sanchis Gúrpide, Pablo Upna Orcid; Ursúa Rubio, Alfredo Upna Orcid (IEEE, 2021)   Contribución a congreso / Biltzarrerako ekarpena
    In this paper a dynamic model for the simulation of pressurized alkaline water electrolyzers is presented. The model has been developed following a multiphysics approach, integrating electrochemical, thermodynamic, heat ...
  • Learning CAN bus communication with a remote laboratory 

    Del Villar, Ignacio Upna Orcid; Rodriguez-Gil, Luis; Orduña, Pablo (IEEE, 2022)   Contribución a congreso / Biltzarrerako ekarpena
    CAN bus is a very important communications protocol. Its usage is extended to many applications and it is key to know some fundamentals in an introductory course to industrial communications. A collaborative experience ...
  • New design alternatives for a hybrid photovoltaic and doubly-fed induction wind plant to augment grid penetration of renewable energy 

    Goñi, Naiara; Sacristán Sillero, Javier; Berrueta Irigoyen, Alberto Upna Orcid; Rodríguez Rabadan, José Luis; Ursúa Rubio, Alfredo Upna Orcid; Sanchis Gúrpide, Pablo Upna Orcid (IEEE, 2021)   Contribución a congreso / Biltzarrerako ekarpena
    Reducing carbon emissions is essential to stop climate change. The grid-share of renewable generation plants is increasing, being wind and photovoltaic plants the most common ones, whereas conventional plants are the ...
  • Optimized DFIG electrical design under voltage sags 

    Urtasun Salinas, Ibai; Larrea León, Pablo; López Taberna, Jesús Upna Orcid (IEEE, 2021)   Contribución a congreso / Biltzarrerako ekarpena
    This paper addresses the dual problem (electrical-mechanical) of DFIG-based wind turbines under voltage sags and proposes an optimized solution that, starting from a design aimed to mitigate the mechanical loads in the ...
  • Particularised Kalman filter for the state-of-charge estimation of second-life lithium-ion batteries and experimental validation 

    Berrueta, Javier; Berrueta Irigoyen, Alberto Upna Orcid; Soto Cabria, Adrián; Sanchis Gúrpide, Pablo Upna Orcid; Ursúa Rubio, Alfredo Upna Orcid (IEEE, 2021)   Contribución a congreso / Biltzarrerako ekarpena
    A critical issue for a proper energy management of a lithium-ion (Li-ion) battery is the estimation of its state-of-charge (SOC). There are various methods available for the SOC estimation, being some of them robust and ...
  • Design and on-field validation of an embedded system for monitoring second-life electric vehicle lithium-ion batteries 

    Castillo Martínez, Diego Hilario; Rodríguez Rodríguez, Adolfo Josué; Soto Cabria, Adrián Upna Orcid; Berrueta Irigoyen, Alberto Upna Orcid; Vargas Requena, Dávid Tomás; Matías Maestro, Ignacio Upna Orcid; Sanchis Gúrpide, Pablo Upna Orcid; Ursúa Rubio, Alfredo Upna Orcid; Rodríguez Rodríguez, Wenceslao Eduardo (MDPI, 2022)   Artículo / Artikulua  OpenAccess
    In the last few years, the growing demand for electric vehicles (EVs) in the transportation sector has contributed to the increased use of electric rechargeable batteries. At present, lithium-ion (Li-ion) batteries are the ...
  • Inertial response and inertia emulation in DFIG and PMSG wind turbines: emulating inertia from a supercapacitor-based energy storage system 

    Sacristán Sillero, Javier; Goñi, Naiara; Berrueta Irigoyen, Alberto Upna Orcid; López Taberna, Jesús Upna Orcid; Rodríguez Rabadan, José Luis; Ursúa Rubio, Alfredo Upna Orcid; Sanchis Gúrpide, Pablo Upna Orcid (IEEE, 2021)   Contribución a congreso / Biltzarrerako ekarpena
    The increasing wind power penetration in electrical power systems results in a reduction of operative conventional power plants. These plants include synchronous generators directly connected to the grid. Facing a change ...
  • Impact of micro-cycles on the lifetime of lithium-ion batteries: an experimental study 

    Soto Cabria, Adrián Upna Orcid; Berrueta Irigoyen, Alberto Upna Orcid; Mateos Inza, Miren; Sanchis Gúrpide, Pablo Upna Orcid; Ursúa Rubio, Alfredo Upna Orcid (Elsevier, 2022)   Artículo / Artikulua  OpenAccess
    Experimental aging studies are commonly conducted on lithium-ion batteries by full charge and discharge cycles. However, such profiles may differ from the actual operation of batteries in electric vehicles and stationary ...
  • Láseres de fibra óptica basados en reflectores clásicos, estrechados y microperforados 

    Sánchez-González, Arturo; Pérez Herrera, Rosa Ana Upna Orcid; Roldán Varona, Pablo; Rodríguez Cobo, Luis; López Higuera, José Miguel; López-Amo Sáinz, Manuel Upna Orcid (SEDOPTICA, 2021)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    En este trabajo se presenta un estudio comparativo entre distintos láseres de fibra óptica altamente dopada con erbio, con cavidades lineales conformadas tanto por reflectores puntuales clásicos como reflectores distribuidos. ...
  • Femtosecond laser inscription of diffraction gratings in CYTOP fibers for optical fiber sensing 

    Lomer, Mauro; Roldán Varona, Pablo; Algorri, J. F.; Rodríguez Cobo, Luis; Pérez Herrera, Rosa Ana Upna Orcid; López-Amo Sáinz, Manuel Upna Orcid; López Higuera, José Miguel (SEDOPTICA, 2021)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    The use of the new CYTOP fibers for the inscription of optical structures and the sensing of different parameters has started to gain importance in the last decade. This work presents the design and manufacture of a CYTOP ...

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