Recent Submissions

  • Integration of second-life battery packs for self-consumption applications: analysis of a real experience 

    Soto Cabria, Adrián Upna Orcid; Berrueta Irigoyen, Alberto Upna Orcid; Zorrilla, Pablo; Iribarren Zabalegui, Álvaro; Castillo, Diego H.; Wenceslao E., Rodríguez; Rodríguez, Adolfo J.; Vargas, David T.; Matías Maestro, Ignacio Upna Orcid; Sanchis Gúrpide, Pablo Upna Orcid; Ursúa Rubio, Alfredo Upna Orcid (IEEE, 2021)   Contribución a congreso / Biltzarrerako ekarpena
    This contribution presents a methodology for the integration of Li-ion batteries discarded from electric vehicle into a collective self-consumption installation, showing the technical feasibility of such battery second ...
  • Active control for medium-frequency transformers flux-balancing in a novel three-phase topology for cascaded conversion structures 

    Lumbreras Magallón, David Upna Orcid; Barrios Rípodas, Ernesto Upna Orcid; Navarrete, Manuel; Balda Belzunegui, Julián; González Senosiain, Roberto; Sanchis Gúrpide, Pablo Upna Orcid (IEEE, 2020)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    Efficiency and power density are important parameters in the design of power electronics converters. In many applications, low-frequency transformers are being substituted for medium-frequency and high-frequency transformers ...
  • Generative adversarial networks for bitcoin data augmentation 

    Zola, Francesco; Bruse, Jan Lukas; Etxeberria Barrio, Xabier; Galar Idoate, Mikel Upna Orcid; Orduna Urrutia, Raúl (IEEE, 2020)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    In Bitcoin entity classification, results are strongly conditioned by the ground-truth dataset, especially when applying supervised machine learning approaches. However, these ground-truth datasets are frequently affected ...
  • Copper oxide coated D-shaped optical fibers for the development of LMR refractometers 

    Ozcariz Celaya, Aritz Upna Orcid; Vitoria Pascual, Ignacio Upna; Arregui San Martín, Francisco Javier Upna Orcid; Ruiz Zamarreño, Carlos Upna Orcid (IEEE, 2020)   Contribución a congreso / Biltzarrerako ekarpena
    Lossy mode resonance (LMR) based refractometers obtained by means of copper oxide thin-films fabricated onto side-polished (D-shaped) are presented in this work. The high refractive index of copper oxide combined with the ...
  • Sub-synchronous resonance damper based on the stator voltage feedback for DFIG wind turbines 

    Samanes Pascual, Javier Upna Orcid; Rosado Galparsoro, Leyre; Gubía Villabona, Eugenio Upna Orcid; López Taberna, Jesús (IEEE, 2020)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    Doubly-fed induction generator (DFIG) wind turbines connected to series compensated grids are prone to sub-synchronous resonance (SSR) instability. In this paper we develop a model to analyze SSRs and propose a damping ...
  • Lossy mode resonance sensors based on tungsten oxide thin films 

    Del Villar, Ignacio Upna Orcid; Bohórquez Navarro, Dina Luz Upna Orcid; Caputo, Domanico; Buzzin, Alessio; Chiavaioli, Francesco; Baldini, Francesco; Ruiz Zamarreño, Carlos Upna Orcid; Matías Maestro, Ignacio Upna Orcid (IEEE, 2020)   Contribución a congreso / Biltzarrerako ekarpena
    Tungsten oxide (WO3) thin-films fabricated on glass slides have been proven to generate lossy mode resonances (LMRs) in the visible region. Obtained devices were characterized in transmission by lateral incidence of light ...
  • Rheumatoid arthritis miRNA biomarker detection by means of LMR based fiber-optic biosensor 

    Imas González, José Javier Upna Orcid; Ruiz Zamarreño, Carlos Upna Orcid; Zubiate Orzanco, Pablo Upna Orcid; Campión, J.; Sánchez-Martín, L.; Matías Maestro, Ignacio Upna Orcid (IEEE, 2020)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    Development of miRNA optical biosensors for disease diagnosis and monitoring has acquired relevance in recent years, due to the clinical importance of miRNA and the inherent advantages of optical sensors. Here, we present ...
  • Capacitor current feedback active damping with lagged compensator for DFIG wind turbines with LCL filter 

    Rosado Galparsoro, Leyre; Samanes Pascual, Javier Upna Orcid; Gubía Villabona, Eugenio Upna Orcid; López Taberna, Jesús (IEEE, 2020)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    Several active damping strategies have been proposed in the literature for grid-connected converters with LCL filter but there are not specific strategies for DFIG wind turbines. In this system, there is an interaction ...
  • Optimal strain gauge configurations for the estimation of mechanical loads in the main shaft of HAWT 

    Iriarte Goñi, Xabier; Aginaga García, Jokin; Lerga Valencia, Francisco Javier; Gainza González, Gorka; Ros Ganuza, Javier; Bacaicoa Díaz, Julen (IOP Publishing, 2020)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    In Structural Health Monitoring of wind turbines, measuring the mechanical loads is a key issue. The customary techniques for this task use a full-bridge strain gauge configuration to measure each of the six load components ...
  • Dual-mode soft-transition control for single-phase grid-connected photovoltaic inverters 

    Elizondo Martínez, David; Urtasun Erburu, Andoni Upna Orcid (IEEE, 2018)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    Single-phase grid-connected inverters for photovoltaic power generation have been strongly analysed for improvement. Dual-mode control for two-stage inverters makes it possible to improve the efficiency by alternating ...
  • Enhancing the efficiency of the interval-valued fuzzy rule-based classifier with tuning and rule selection 

    Sanz Delgado, José Antonio Upna Orcid; Asmus, Tiago Upna; Osa Hernández, Borja de la Upna; Bustince Sola, Humberto Upna Orcid (Springer, 2020)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    Interval-Valued fuzzy rule-based classifier with TUning and Rule Selection, IVTURS, is a state-of-the-art fuzzy classifier. One of the key point of this method is the usage of interval-valued restricted equivalence functions ...
  • A gap waveguide fed circular polarization antennas in the millimeter wave range 

    Pérez, Dayan Upna Orcid; Torres García, Alicia E. Upna Orcid; Ederra Urzainqui, Íñigo Upna Orcid; Beruete Díaz, Miguel Upna Orcid (IEEE, 2020)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    In this work, a novel circular polarization (CP) antennas in ridge gap waveguide (RGW) working in the V-band of the millimeter-wave spectrum is presented. CP is generated in a simple and effective way by means of two ...
  • Worst expected ramp rates from cloud speed measurements 

    Wang, Guang Chao; Bosch, Juan Luis; Kurtz, Ben; Parra Laita, Íñigo de la Upna Orcid; Wu, Elynn (IEEE, 2019)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    Large PV power ramp rates are of concern and sometimes even explicitly restricted by grid operators. Battery energy storage systems can smooth the power output and maintain ramp rates within permissible limits. To enable ...
  • Optical fiber vacuum sensor based on modal interferometer and PDMS coating 

    Ascorbe Muruzabal, Joaquín Upna Orcid; Fuentes Lorenzo, Omar Upna; Corres Sanz, Jesús María Upna Orcid; Arregui San Martín, Francisco Javier Upna Orcid; Matías Maestro, Ignacio Upna Orcid (IEEE, 2019)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    This work studies the behavior of polydimethylsiloxane (PDMS) as a transducer for optical vacuum pressure measurements. The optical structure chosen for this device is a modal interferometer achieved by splicing a coreless ...
  • New hexagonal CORPS-BFN for multibeam antenna applications 

    Biurrun Quel, Carlos Upna Orcid; Montesano, Antonio; Ederra Urzainqui, Íñigo Upna Orcid; Iriarte Galarregui, Juan Carlos Upna Orcid; Río Bocio, Carlos del Upna Orcid (IEEE, 2020)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    This work presents a new topology of a Coherently Radiating Periodic Structure - Beam Forming Network (CORPS-BFN) and its application for multibeam systems. A unit cell, consisting of a transition from a coaxial input to ...
  • Comparison of modified Soret lenses for dual band integrated detectors 

    Torres García, Alicia E. Upna Orcid; Pérez Escudero, José Manuel Upna Orcid; Gonzalo García, Ramón Upna Orcid; Ederra Urzainqui, Íñigo Upna Orcid (IEEE, 2020)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    This paper presents the comparison of different modified Soret lenses suitable for a millimeter and submillimeterwave dualband integrated pixel detectors. The approach is based on the modification of a printed planar Soret ...
  • An empirical study on supervised and unsupervised fuzzy measure construction methods in highly imbalanced classification 

    Uriz Martín, Mikel Xabier Upna; Paternain Dallo, Daniel Upna Orcid; Bustince Sola, Humberto Upna Orcid; Galar Idoate, Mikel Upna Orcid (IEEE, 2020)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    The design of an ensemble of classifiers involves the definition of an aggregation mechanism that produces a single response obtained from the information provided by the classifiers. A specific aggregation methodology ...
  • Additional feature layers from ordered aggregations for deep neural networks 

    Domínguez Catena, Iris Upna Orcid; Paternain Dallo, Daniel Upna Orcid; Galar Idoate, Mikel Upna Orcid (IEEE, 2020)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    In the last years we have seen huge advancements in the area of Machine Learning, specially with the use of Deep Neural Networks. One of the most relevant examples is in image classification, where convolutional neural ...
  • Development of energy management strategies for the sizing of a fast charging station for electric buses 

    Ojer Palacios, Iñaki Upna; Berrueta Irigoyen, Alberto Upna Orcid; Pascual Miqueleiz, Julio María Upna Orcid; Sanchis Gúrpide, Pablo Upna Orcid; Ursúa Rubio, Alfredo Upna Orcid (IEEE, 2020)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    The electric vehicle contributes to reduce greenhouse gases emissions and get a greater integration of renewable energy. In this context, the implementation of urban buses implies the development of new grid infrastructures ...
  • Aggregation functions based on the Choquet integral applied to image resizing 

    Bueno, Jéssica C. S.; Dias, Camila A.; Pereira Dimuro, Graçaliz Upna Orcid; Santos, Helida; Bustince Sola, Humberto Upna Orcid (Atlantis Press, 2019)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    The rising volume of data and its high complexity has brought the need of developing increasingly efficient knowledge extraction techniques, which demands efficiency both in computational cost and in accuracy. Most of ...

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