Now showing items 1-20 of 24

    • An efficient fault diagnosis method for PV systems based on operating voltage-window 

      Gokmen, Nuri; Karatepe, Engin; Silvestre Bergés, Santiago; Celik, Berk; Ortega Villasclaras, Pablo Rafael (2013-09)
      Article
      Restricted access - publisher's policy
      With the increasing use of photovoltaic (PV) systems, the research studies to improve the efficiency of PV systems have gained greater interest in recent years, especially under non-uniform operating conditions. However, ...
    • Analysis of current and voltage indicators in grid connected PV (photovoltaic) systems working in faulty and partial shading conditions 

      Silvestre Bergés, Santiago; Kichou, Sofiane; Chouder, Aissa; Nofuentes Garrido, Gustavo; Karatepe, Engin (2015-06-12)
      Article
      Open Access
      To ensure the optimization of the energy generated by grid connected PV (photovoltaic) systems is necessary to plan a strategy of automatic fault detection. The analysis of current and voltage indicators have demonstrated ...
    • Analysis of the dynamic short-circuit resistance in organic bulk-heterojunction solar cells: relation to the charge carrier collection efficiency 

      Voz Sánchez, Cristóbal; Puigdollers i González, Joaquim; Asensi López, José Miguel; Galindo Lorente, Sergi; Cheylan, S.; Pacios, R.; Ortega Villasclaras, Pablo Rafael; Alcubilla González, Ramón (2013-06)
      Article
      Restricted access - publisher's policy
      This work studies the charge carrier collection efficiency in organic bulk-heterojunction solar cells based on polymer:fullerene blends. An equivalent circuit with a specific recombination term is proposed to describe the ...
    • Behavioral data of thin-film single junction amorphous silicon (a-Si) photovoltaic modules under outdoor long term exposure 

      Kichou, Sofiane; Silvestre Bergés, Santiago; Nofuentes Garrido, Gustavo; Torres Ramírez, Miguel; Chouder, Aissa; Guasch Murillo, Daniel (Elsevier, 2016-06-01)
      Article
      Open Access
      Four years'behavioraldataofthin-film single junction amorphous silicon (a-Si)photovoltaic(PV)modules installed in a relatively dry and sunny inland site with aContinental-Mediterranean climate (in thecityofJaén,Spain)are ...
    • Convertidor para recuperación de energía a la red procedente de una planta fotovoltaica 

      Blanco Fernández, Samuel (Universitat Politècnica de Catalunya, 2010-06-17)
      Master thesis (pre-Bologna period)
      Restricted access - author's decision
      En el present treball es dissenya un sistema automàtic per a la representació gràfica de la resposta intrínseca I-V i P-V de generadors fotovoltaics. Aquest sistema s’implementa mitjançant una placa electrònica i un ...
    • Convertidor para recuperación de energía a la red procedente de una planta fotovoltaica 

      Julià Gestí, Marc; Morata Gella, Roberto (Universitat Politècnica de Catalunya, 2010-06-17)
      Master thesis (pre-Bologna period)
      Restricted access - author's decision
      El present document recull el disseny, anàlisi i l’ implementació d’un convertidor estàtic per a la recuperació d’energia des de un sistema fotovoltaic per al posterior enviament cap a la xarxa elèctrica. En ell s’afronten ...
    • Diseño de un seguidor solar de grandes dimensiones de dos ejes para placas fotovoltaicas 

      Montesinos Rodríguez, Pablo; Aparicio Moss, Marcos (Universitat Politècnica de Catalunya, 2011-01)
      Master thesis (pre-Bologna period)
      Restricted access - author's decision
      Un seguidor solar consiste en una estructura que se desplaza, adoptando la posición óptima, para la captación de radiación solar para la producción de energía eléctrica debido a las placas fotovoltaicas que se integran ...
    • Diseño de una instalación fotovoltaica autónoma en un ámbito rural con registro paramétrico de energía 

      Bermejo López-Manzanares, Núria (Universitat Politècnica de Catalunya, 2011-06)
      Master thesis (pre-Bologna period)
      Open Access
      Este proyecto nace de la creciente necesidad de apostar por las energías renovables. Cada vez más se invierte en mejorar el rendimiento de éstas, que no sólo son importantes porque son energías limpias, si no porque es una ...
    • Ephocell project: smart light collecting system for the efficiency enhancement of solar cells - ray trace modeling of system 

      Aubouy, Laurent; Gutiérrez-Tauste, D.; Della Pirriera, Monica; Noriega, G.; Di Lorenzo, M.L.; Avella, M.; Errico, M.E.; Gentile, G.; Kennedy, M.; Doran, J.; Norton, B.; Ahmed, H.; Baluschev, S.; Bistué Guardiola, J.; Hervera, F.; Puigdollers i González, Joaquim; Voz Sánchez, Cristóbal; Daren, S.; Solomon-Tsvetkov, F.; Pashov, A. (2012)
      Conference lecture
      Restricted access - publisher's policy
      PV cell efficiency is limited partly due to the spectral mismatch between the solar spectrum and the PV absorption properties. PV conversion efficiency is enhanced by external modulation of the incident irradiance, by means ...
    • Evaluation of storage energy requirements for constant production in PV power plants 

      Beltran, Hector; Bilbao, Endika; Belenguer, Enrique; Etxeberria Otadui, Ion; Rodríguez Cortés, Pedro (IEEE Press. Institute of Electrical and Electronics Engineers, 2012-03-01)
      Article
      Restricted access - publisher's policy
      This paper analyzes the minimum energy capacity ratings that an energy-storage (ES) system should accomplish in order to achieve a defined constant power production in a photovoltaic (PV) power plant. ES is a key issue for ...
    • High voltage ultrathin-photovoltaic minimodules: fabrication technology and application to bioimplantable telesupplying 

      Bermejo Broto, Sandra; Silvestre Bergés, Santiago; Ortega Villasclaras, Pablo Rafael (2014-05-01)
      Article
      Restricted access - publisher's policy
      In this work we show small (0.49 cm2) and thin (<70 µm) photovoltaic mini-generators capable of providing open circuit voltages up to 99 V and short circuit currents of 43 µA, achieving a maximum density power of 4.8 mW/cm2. ...
    • Identification and maximum power point tracking of photovoltaic generation by a local neuro-fuzzy model 

      Rouzbehi, Kumars; Miranian, Arash; Luna Alloza, Álvaro; Rodríguez Cortés, Pedro (2012)
      Conference report
      Restricted access - publisher's policy
      With the rapid proliferation of the DC distribution systems, special attentions are paid to the photovoltaic (PV) generations. This paper addresses the problem of maximum power point tracking (MPPT) for PV systems using a ...
    • Influencia de los parámetros de diseño de un inversor fotovoltaico en la estabilidad de una microred 

      Rodríguez Villarreal, José Raúl; Biel Solé, Domingo; Guinjoan Gispert, Francisco (2012)
      Conference report
      Restricted access - publisher's policy
      El incremento de la generación de energía distribuida en la red eléctrica ha despertado inquietudes respecto a la estabilidad de la misma. Los generadores fotovoltaicos conectados a la red eléctrica tienen que lidiar con ...
    • Instal·lació fotovoltaica connectada a xarxa 

      Alcover Gomila, Juan Miguel (Universitat Politècnica de Catalunya, 2011-02)
      Master thesis (pre-Bologna period)
      Restricted access - author's decision
      En aquest projecte és realitza l’estudi necessari per a la instal·lació d’una central fotovoltaica connectada a xarxa a sobre d’una nau industrial. Aquesta nau industrial es troba en el polígon de Manacor, Mallorca, en ...
    • Lithium ion batteries ageing analysis when used in a PV power plant 

      Beltran, H.; Swierczynski, M.; Aparicio, N.; Belenguer, E.; Teodorescu, Remus; Rodríguez Cortés, Pedro (2012)
      Conference report
      Restricted access - publisher's policy
      This paper analyzes the integration of lithium ion (Li-ion) batteries into large scale grid-connected PV plants. It performs a systematic analysis on both the operation improvement obtained by a PV+ES power plant and the ...
    • LPV model for PV cell and fractional control of DC-DC converter for photovoltaic systems 

      Martínez González, Rubén; Bolea Monte, Yolanda; Grau Saldes, Antoni; Martínez García, Herminio (IEEE, 2011)
      Conference report
      Restricted access - publisher's policy
      This paper deals with the fractional modelling of a DC-DC converter, suitable in solar-powered electrical generation systems, and the design of a fractional controller for the aforementioned switching converter. A new model ...
    • Lumogen violet dye as luminiscent down-shifting layer for C-silicon solar cells 

      Ahmed, H.; Kennedy, M.; Confrey, T.; Doran, J.; McCormack, S.J.; Galindo Lorente, Sergi; Voz Sánchez, Cristóbal; Puigdollers i González, Joaquim (2012)
      Conference lecture
      Restricted access - publisher's policy
      In this investigation Naphtalimide based Lumogen Violet organic dye [BASF] is characterized for inclusion in luminescent downshifting (LDS) layers. A PV device made up of an LDS layer of Lumogen Violet deposited on top ...
    • Maximum power point tracking based on slidingmode control for output-series connected converters in photovoltaic systems 

      Cabal, Cédric; Martínez Salamero, Luis; Séguier, Lionel; Alonso, Corinne; Guinjoan Gispert, Francisco (2014-04-01)
      Article
      Restricted access - publisher's policy
      A perturb and observe algorithm based on both the power-current characteristic of a photovoltaic (PV) panel and the sliding-mode control of the input inductor current of an associated converter is investigated in a static ...
    • Monitoring, modelling and simulation of PV systems using LabVIEW 

      Chouder, Aissa; Silvestre Bergés, Santiago; Taghezouit, Bilal; Karatepe, Engin (2013-05)
      Article
      Restricted access - publisher's policy
      This paper presents a detailed characterization of the performance and dynamic behaviour of photovoltaic systems by using LabVIEW real-time interface system. The developed software tool integrates several types of instruments ...
    • Optimization of the small-scale off-grid PV systems using HOMER 

      Piquer Garcia, Maria (Universitat Politècnica de Catalunya, 2018-01)
      Bachelor thesis
      Open Access
      The object of this project is to optimize a PV power system for a domestic application by using the software HOMER. First, we have analyzed the different types of PV systems in reference to the relationship with the grid. ...