Recent Submissions

  • Lithium-ion battery model and experimental validation 

    Berrueta Irigoyen, Alberto Upna Orcid; Irigaray, Víctor; Sanchis Gúrpide, Pablo Upna Orcid; Ursúa Rubio, Alfredo Upna Orcid (2015)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    A simple battery model is useful for: Sizing of the storage system for a particular application; Designing other elements connected to the battery; Managing the storage system operation. This poster consists on: Tests to ...
  • Hydrogen-lithium energy storage for a stand-alone microgrid 

    Berrueta Irigoyen, Alberto Upna Orcid; San Martín Biurrun, Idoia Upna Orcid; Sanchis Gúrpide, Pablo Upna Orcid; Ursúa Rubio, Alfredo Upna Orcid (2016)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    Sizing of the storage system for a stand-alone application: Satisfaction of technical requirements; Based on real data from an experimental microgrid; Long lifetime; Lowest price
  • Compensation of forecast error in large PV plants with battery storage: associated strategies 

    Marcos Álvarez, Javier Upna Orcid; Parra Laita, Íñigo de la Upna Orcid; Muñoz Escribano, Mikel Upna; García Solano, Miguel Upna Orcid; Marroyo Palomo, Luis Upna Orcid (2017)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    As penetration rates of utility-scale photovoltaics (PV) increases, large PV plants will participate in the daily wholesale electricity market in the same way that wind farms. Then, PV plant owner can receive some kind of ...
  • Static and dynamic characterization of a supercapacitor 

    Berrueta Irigoyen, Alberto Upna Orcid; San Martín Biurrun, Idoia Upna Orcid; Ursúa Rubio, Alfredo Upna Orcid; Sanchis Gúrpide, Pablo Upna Orcid (2014)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    Supercapacitors (SCs) have recently received a major boost as a result of the development of multiple applications, such as the electric vehicle and electric microgrids. Storage systems consisting of SCs combined with ...
  • Multichannel refractometer based on lossy mode resonances 

    Fuentes Lorenzo, Omar Upna; Corres Sanz, Jesús María Upna Orcid; Domínguez Rodríguez, Ismel Upna Orcid; Del Villar, Ignacio Upna Orcid; Matías Maestro, Ignacio Upna Orcid (IEEE, 2022)   Artículo / Artikulua
    In this work a new multiparameter sensor platform based on lossy mode resonances is presented. The structure consists of a soda-lime optical slab waveguide butt-coupled to multimode optical fibers. A variable thickness ...
  • Intelligent SDN-based multi-protocol selector for IoT-enabled NMT networks 

    Al-Rahamneh, Anas; Astrain Escola, José Javier Upna Orcid; López Iturri, Peio Upna Orcid; Picallo Guembe, Imanol Upna Orcid; Falcone Lanas, Francisco Javier Upna Orcid (IEEE, 2021)   Contribución a congreso / Biltzarrerako ekarpena
    The popularity of the Internet of Things is increasing and it is being used in many commercial sectors, using customized technologies for specific environments. Applications and protocols, and the unique requirements of ...
  • Flat lens antenna using gap waveguide technology at millimeter waves 

    Pérez, Dayan Upna Orcid; Bilitos, Christos; Ruiz-García, J.; González-Ovejero, D.; Beruete Díaz, Miguel Upna Orcid (IEEE, 2021)   Contribución a congreso / Biltzarrerako ekarpena
    In this paper, a flat lens antenna using Gap Waveguide (GW) technology working in the millimeter waves band was designed. The metamaterial lens is fed using a Groove Gap Waveguide (GGW) horn antenna in order to achieve a ...
  • Silver nanoparticles loaded electrospun nanofibers for humidity optical fiber sensing 

    Urrutia Azcona, Aitor Upna Orcid; Rivero Fuente, Pedro J. Upna Orcid; Goicoechea Fernández, Javier Upna Orcid; Rodríguez, Yoany; Arregui San Martín, Francisco Javier Upna Orcid; Matías Maestro, Ignacio Upna Orcid (2012)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    In this work, a new optical device based on silver loaded electrospun nanofibers (ENFs) for measuring Relative Humidity is proposed. Fiber mats composed of poly(acrylic acid) and β-cyclodextrin were deposited onto an optical ...
  • On the calculation of the STC power of PV generators by using typical monitoring system data 

    Muñoz Escribano, Mikel Upna; Parra Laita, Íñigo de la Upna Orcid; García Solano, Miguel Upna Orcid; Marcos Álvarez, Javier Upna Orcid; Marroyo Palomo, Luis Upna Orcid (2017)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    The properly in-field characterization of the power at Standard Test Conditions, PSTC, of PV generators is becoming increasingly important in order to evaluate their performance and its evolution in time. Within the state ...
  • A tool for the performance evaluation and failure detection of Amareleja PV plant (Acciona) from SCADA 

    Muñoz Escribano, Mikel Upna; Parra Laita, Íñigo de la Upna Orcid; García Solano, Miguel Upna Orcid; Marcos Álvarez, Javier Upna Orcid; Pérez, Miguel (2015)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    This paper describes a tool developed for the performance evaluation and failure detection in a 45.6 MWp PV plant installed by the company Acciona in Amareleja (Portugal). The paper describes the PV plant configuration and ...
  • PV power forecasting using a parametric model 

    Muñoz Escribano, Mikel Upna; Parra Laita, Íñigo de la Upna Orcid; García Solano, Miguel Upna Orcid; Marcos Álvarez, Javier Upna Orcid (2015)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    Nowadays, accurate AC power output forecast of PV plants can play a significant role for both the system operators and PV plant owners. The first group has to program the dispatch of the electric system and the second one ...
  • A comparative study of degradation and performance of thin film photovoltaic generators versus a multi-crystalline generator 

    Parra Laita, Íñigo de la Upna Orcid; García Solano, Miguel Upna Orcid; Marcos Álvarez, Javier Upna Orcid; Marroyo Palomo, Luis Upna Orcid (2013)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    Thin film solar cells (TFSC) are supposed to have higher energy yield rates than crystalline silicon (Si-x) mainly possible by some enhancements like lower temperature coefficient and higher absorption of diffuse light. ...
  • A novel camera phone-based platform for Sol-Gel-derived fluorescence pH sensing 

    Urrutia Azcona, Aitor Upna Orcid; Wencel, D.; O’Driscoll, S.; O’Reilly, B.; Abel, T.; Somers, M.; Rivero Fuente, Pedro J. Upna Orcid; Arregui San Martín, Francisco Javier Upna Orcid; McDonagh, C. (2013)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    In this work a novel camera phone system for fluorescence-based sol-gel-derived pH sensing is presented. The sol-gel based pH material, a microfluidic chip and a camera phone have been combined to obtain a fluorescence-based ...
  • Optical sensor based on polymer electrospun nanofibers for sensing humidity 

    Urrutia Azcona, Aitor Upna Orcid; Rivero Fuente, Pedro J. Upna Orcid; Goicoechea Fernández, Javier Upna Orcid; Arregui San Martín, Francisco Javier Upna Orcid; Matías Maestro, Ignacio Upna Orcid (2011)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    A novel humidity sensor based on polymer electrospun nanofibers coating onto an optical fiber is proposed in this work. The coating is composed of poly(acrylic acid), and its fabrication was performed by the electrospinning ...
  • Humidity sensor based on a long-period fiber grating coated with a hydrophobic thin film 

    Urrutia Azcona, Aitor Upna Orcid; Rivero Fuente, Pedro J. Upna Orcid; Goicoechea Fernández, Javier Upna Orcid; Arregui San Martín, Francisco Javier Upna Orcid; Matías Maestro, Ignacio Upna Orcid (2010)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    In this work it is proposed a novel fiber optic humidity sensor based on a functionally coated long-period fiber grating (LPG). The coating is composed of tetraorthosilicate matrix functionalized with perfluorooctyltriethoxysilane ...
  • An antibacterial surface coating composed of PAH/SiO2 nanostructurated films by Layer by Layer 

    Urrutia Azcona, Aitor Upna Orcid; Rivero Fuente, Pedro J. Upna Orcid; Ruete Ibarrola, Leyre; Goicoechea Fernández, Javier Upna Orcid; Matías Maestro, Ignacio Upna Orcid; Arregui San Martín, Francisco Javier Upna Orcid (2009)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    In this article we propose a novel antibacterial coating composed of SiO2 and the polymer Poly(allylamine hydrochloride) (PAH) on glass slides by the technique Layer-by- Layer (LbL)1. This technique has already used in ...
  • Effect of the inner current loop on the voltage regulation for three-phase photovoltaic inverters 

    Urtasun Erburu, Andoni Upna Orcid; Sanchis Gúrpide, Pablo Upna Orcid; Marroyo Palomo, Luis Upna Orcid (IEEE, 2020)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    In three-phase grid-connected PV inverters, regulating the input voltage is a fundamental requirement. In order to reduce the influence of the PV non-linear behavior and ensure stability in the whole operating range, the ...
  • Fiber-based label-free D-dimer detection for early diagnosis of venous thromboembolism 

    Zubiate Orzanco, Pablo Upna Orcid; Urrutia Azcona, Aitor Upna Orcid; Ruiz Zamarreño, Carlos Upna Orcid; Fernández Irigoyen, Joaquín Upna Orcid; Giannetti, Ambra; Baldini, Francesco; Díaz Lucas, Silvia Upna Orcid; Matías Maestro, Ignacio Upna Orcid; Arregui San Martín, Francisco Javier Upna Orcid; Santamaría, Enrique; Del Villar, Ignacio Upna Orcid; Chiavaioli, Francesco (SPIE, 2020)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    D-dimer is a useful diagnostic biomarker for deep vein thrombosis or pulmonary embolism, collectively referred to as venous thromboembolism (VTE). The ability to detect in real-time the amount of D-dimer with a fast and ...
  • SnO2-MOF-Fabry-Pérot humidity optical sensor system based on Fast Fourier transform technique 

    López Aldaba, Aitor Upna; López Torres, Diego Upna Orcid; Ascorbe Muruzabal, Joaquín Upna Orcid; Rota Rodrigo, Sergio Upna; Elosúa Aguado, César Upna Orcid; López-Amo Sáinz, Manuel Upna Orcid; Arregui San Martín, Francisco Javier Upna Orcid; Corres Sanz, Jesús María Upna Orcid; Auguste, Jean-Louis; Jamier, Raphael; Roy, Philippe (SPIE, 2016)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    In this paper, a new sensor system for relative humidity measurements based on a SnO2 sputtering deposition on a microstructured optical fiber (MOF) low-finesse Fabry-Pérot (FP) sensing head is presented and characterized. ...
  • Modulated fiber ring laser and its application in high-sensitivity temperature sensors 

    Pérez Herrera, Rosa Ana Upna Orcid; Tainta Ausejo, Santiago Upna Orcid; Erro Betrán, María José Upna Orcid; López-Amo Sáinz, Manuel Upna Orcid (SPIE, 2016)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
    This work presents an experimental demonstration of a scheme based on an internally modulated fiber ring laser for high-sensitivity temperature sensing. The attained temperature resolution has been as low as ± 2pm even ...

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