Now showing items 1-20 of 22

  • Aerodynamical study of a photovoltaic solar tracker 

    Gutiérrez Castillo, José Leonardo (Universitat Politècnica de Catalunya, 2016-04-29)
    Bachelor thesis
    Open Access
    State of the art. Literature review about CFD applied to solar panels. Analytic approach of the problem. Application of CFD analysis. Validation of the results. Discussion of the results. Improvements proposal.
  • Análisis visual y energético de las celosías fotovoltaicas: elemento de control y captación en la arquitectura contemporánea 

    Oyarce Cabello, Cristóbal (Universitat Politècnica de Catalunya, 2013)
    Master thesis
    Restricted access - confidentiality agreement
  • An extremely thin and robust interconnecting layer providing 76% fill factor in a tandem polymer solar cell architecture 

    Martinez Otero, Alberto; Liu, Quansheng; Mantilla Perez, Paola; Montes Bajo, Miguel; Martorell Pena, Jordi (Royal Society of Chemistry, 2015-04-17)
    Article
    Open Access
    We report a thin and robust interconnecting layer (ICL) for polymer tandem solar cells. This ICL shows low absorption, good electrical contacts, large work function contrast and robustness. Its use yields tandem cells with ...
  • Cavity-controlled radiative recombination of excitons in thin-film solar cells 

    Vuong, Luat T.; Kozyreff, Gregory; Betancur, Rafael; Martorell Pena, Jordi (2009-12-07)
    Article
    Open Access
    We study the performance of photovoltaic devices when controlling the exciton radiative recombination time. We demonstrate that when high-quantum-yield fluorescent photovoltaic materials are placed within an optical cavity, ...
  • c-Si photovoltaic arrays 

    Bermejo Broto, Sandra; Ortega Villasclaras, Pablo Rafael; Castañer Muñoz, Luis María (IEEE Press. Institute of Electrical and Electronics Engineers, 2009)
    Conference report
    Open Access
    Crystalline silicon small photovoltaic arrays are shown. Electrical isolation of individual cells and series connection between them to integrate series arrays are discussed. High open circuit voltage values in the range ...
  • Desenvolupament d'una plataforma docent per a generació fotovoltàica 

    Vitales Lueza, Hèctor (Universitat Politècnica de Catalunya, 2010-06-17)
    Master thesis (pre-Bologna period)
    Open Access
    Actualment, l’emissió desmesurada de CO2 provoca un interès progressiu orientat a les energies renovables. L’idea d’evolucionar cap a un mon sostenible i energètic fa que s’iniciï un nou moviment de consciència i ...
  • Design of a global maximum power point tracking (GMPPT) for PV array based on precise PV shadow modem 

    García-Gutiérrez, Luis; Bressan, Michael; Jiménez, Fernando; Heras Jiménez, Salvador Augusto de las; Alonso, Corinne (Institute of Electrical and Electronics Engineers (IEEE), 2018)
    Conference lecture
    Open Access
    This paper presents the modeling of a photovoltaic system under complex shading conditions. The approach integrates a complete PV array with each cell modeled separately including shadow coefficients depending on a ...
  • Dynamic modelling and control of a PV generator for large scale applications 

    Cabrera Tobar, Ana; Aragüés Peñalba, Mònica; Gomis Bellmunt, Oriol (Institute of Electrical and Electronics Engineers (IEEE), 2018)
    Conference report
    Restricted access - publisher's policy
    As large scale photovoltaic power plants are increasing their capacity, the new grid codes are requiring that these power plants have similar performance as conventional power plants do. Because of this, it is essential ...
  • Effect of variable solar irradiance on the reactive power response of photovoltaic Generators 

    Cabrera Tobar, Ana; Aragüés Peñalba, Mònica; Gomis Bellmunt, Oriol (2018)
    Conference report
    Restricted access - publisher's policy
    New grid requirements for large scale photovoltaic power plants (LS-PVPPs) demanding ancillary services make necessary the enhancement of photovoltaic (PV) generator's control. One of the challenges is the reactive power ...
  • Enhanced light harvesting in semitransparent organic solar cells using an optical metal cavity configuration 

    Pastorelli, Francesco; Romero Gómez, Pablo; Betancur Lopera, Rafael; Martinez Otero, Alberto; Mantilla Perez, Paola; Bonod, Nicolas; Martorell Pena, Jordi (2015-01-21)
    Article
    Open Access
    An optical metal cavity configuration is used to trap near infrared light in a semitransparent organic solar cell. The efficiency for such cell, which has a higher than 20% transparency in the visible region, is equal to ...
  • FPGA-based design of a step-up photovoltaic array emulator for the test of PV grid-connected inverters 

    Chavarría Roé, Javier; Biel Solé, Domingo; Guinjoan Gispert, Francisco; Poveda López, Alberto; Masana Nadal, Francisco; Alarcón Cot, Eduardo José (Institute of Electrical and Electronics Engineers (IEEE), 2014)
    Conference report
    Restricted access - publisher's policy
    In this work, a proof of concept prototype for a photovoltaic array emulator based on a DC-DC Boost converter is presented. This design arises from the need to study in the laboratory new PV inverters based on Silicon ...
  • Front contact optimization of industrial scale CIGS solar cells for low solar concentration using 2D physical modeling 

    Delgado Sánchez, José María; López González, Juan Miguel; Orpella García, Alberto; Sánchez-Cortezón, Emilio; Alba, Maria D.; López López, Carmen; Alcubilla González, Ramón (2017-02-01)
    Article
    Open Access
    Cu(In,Ga)Se2 (CIGS) technology is one of the best absorber materials with record efficiencies among photovoltaic thin-film technologies (22.3% at lab scale and 16% at large commercial module). Although research on this ...
  • High dielectric constant donors and acceptors for organic photovoltaics 

    Vázquez Fernández, Naiara Ilía (Universitat Politècnica de Catalunya / Rijksuniversiteit Groningen, 2013)
    Bachelor thesis
    Restricted access - author's decision
    Organic solar cells bear the potential to develop a long-term technology that is environmentally clean and economically promising for large-scale power generation. Thanks to higher absorption coefficient, organic materials ...
  • HIT intermediate-band solar cells with self-assembled colloidal quantum dots and metal nanoparticles 

    Tobias, Ignacio; Mendes, Manuel; Boronat Moreiro, Alfredo; Lopez, Ester; garcia linares, pablo; Artacho, Irene; Martí, Antonio; Silvestre Bergés, Santiago; Luque, Antonio (Institute of Electrical and Electronics Engineers (IEEE), 2015)
    Conference lecture
    Restricted access - publisher's policy
    The particular opto-electronic properties of chemically synthesized colloidal nanoparticles can be promising for functional materials, as those required for high efficient photovoltaic (PV) devices. In particular, ...
  • Identifiying causes of power reduction in photovoltaic systems 

    Silvestre Bergés, Santiago; Chouder, Aissa (IEEE Press. Institute of Electrical and Electronics Engineers, 2010)
    Conference lecture
    Open Access
    A procedure for the identification of main causes of power reduction in PV systems, based on the continuous check of the real measured losses and his comparison to simulation results obtained for the same parameter, ...
  • Influence of a gold seed in transparent V2Ox/Ag/V2Ox selective contacts for dopant-free silicon solar cells 

    Nguyen, Hieu Trung; Ros Costals, Eloi; Bertomeu Balaguero, Joan; Asensi López, José Miguel; Andreu Batallé, Jordi; Martín García, Isidro; Ortega Villasclaras, Pablo Rafael; Garin Escriva, Moises; Puigdollers i González, Joaquim; Voz Sánchez, Cristóbal; Alcubilla González, Ramón; Tom, Thomas (2018-11-05)
    Article
    Open Access
    Dielectric/metal/dielectric structures based on vanadium pentoxide with a thin silver interlayer have been optimized to replace traditional transparent electrodes. As would be expected, there is a tradeoff in the metal ...
  • Mixing local and distributed reactive power control for balancing inverters' effort in grid-connected photovoltaic systems 

    Velasco García, Manel; Martí Colom, Pau; Camacho Santiago, Antonio; Miret Tomàs, Jaume; Castilla Fernández, Miguel (2013)
    Conference report
    Restricted access - publisher's policy
    Reactive power control methods have been proven to be a successful technique for maintaining voltages of photovoltaic (PV) distributed generators (DG) within the admissible limits without enforcing to reduce the production ...
  • Multi-period power management optimization for operating isolated hybrid microgrids 

    Galceran-Feixas, M.; Aragüés Peñalba, Mònica; Bullich Massagué, Eduard; Vidal Clos, J.-A; Gomis Bellmunt, Oriol (2018)
    Conference report
    Restricted access - publisher's policy
    The aim of this study is to develop an algorithm for ensuring optimal operation of isolated microgrids. The generic microgrid considered consists of a set of distributed controllable generators integrated to a distribution ...
  • On the use of sun trackers to improve maximum power point tracking controllers applied to photovoltaic systems 

    Jaen Fernandez, Carles; Pou Félix, Josep; Capellá Frau, Gabriel José; Arias Pujol, Antoni; Lamich Arocas, Manuel (2009)
    Conference report
    Open Access
    Nowadays power supply systems based on photovoltaic cells have two main drawbacks, even the primary energy is free and renewable. They are: production cost and efficiency. In order to increase their efficiency, it should ...
  • Radiation damage evaluation on AlGaAs/GaAs solar cells 

    García, E; Alcubilla González, Ramón; Prat Viñas, Lluís; Castañer Muñoz, Luis María (1988-01)
    Article
    Open Access
    A computer model to evaluate radiation damage on AlGaAs-based solar cells is reported. The model is based on a piecewise approach that divides the cell structure in an adaptive number of slices. Inside a particular slice ...