Now showing items 1-20 of 663

    • 4-terminal tandem photovoltaic cell using two layers of PTB7:PC71BM for optimal light absorption 

      Mantilla Perez, Paola; Martinez Otero, Alberto; Romero Gómez, Pablo; Martorell Pena, Jordi (2015-08-26)
      Article
      Open Access
      A 4-terminal architecture is proposed in which two thin active layers (<100 nm) of PTB7:PC71BM are deposited on a two-sided ITO covered glass substrate. By modeling the electric field distribution inside the multilayer ...
    • A GIS-based methodology for PV Solar Parks Site Selection and regional solar potential assessment: case study in the shire of La Segarra, Catalonia 

      Morales I Bellsolà, Javier (Universitat Politècnica de Catalunya, 2020-12-07)
      Master thesis
      Open Access
      Covenantee:   École Polytechnique Paris
      Transitioning to a society with almost null fossil fuel usage based on an alternative energetic model not dependent on fossil fuels nor nuclear power and based on decentralized energy system 100% renewable based with own ...
    • A high step-up Z-source-flyback converter with integrated inductors for photovoltaic applications 

      Hamed, Moradmand Jazi; Davoodi, Bita; Soltani, Mohsen; Martínez García, Herminio; Velasco Quesada, Guillermo (2021-12-30)
      Article
      Restricted access - publisher's policy
      Increasing the voltage gain by means of Z-source network will provide some features such as low voltage stress of semiconductor devices, low duty cycle of the switch and low reverse recovery problem of output diode that ...
    • A novel methodology for determination of soiling on PV panels by means of grey box modelling 

      Castellà Rodil, Marc; Patarroyo Montenegro, Juan; Kampouropoulos, Konstantinos; Andrade Rengifo, Fabio; Romeral Martínez, José Luis (2019)
      Conference report
      Restricted access - publisher's policy
      This article presents a novel methodology for the determination of soiling appearance on photovoltaic panels by means of data analysis of their energy production and operating conditions. The proposed methodology is based ...
    • A photovoltaic three-phase topology to reduce common mode voltage 

      Vázquez Guzmán, Gerardo; Kerekes, Tamas; Rocabert Delgado, Joan; Rodríguez Cortés, Pedro; Teodorescu, Remus; Aguilar, Daniel (2010)
      Conference report
      Open Access
      At the present time most of the photovoltaic (PV) applications require to be integrated to the electrical grid. There are mainly two types of PV systems: with galvanic isolation (transformer) and transformerless. PV ...
    • A review of energy storage technologies for large scale photovoltaic power plants 

      Bullich Massagué, Eduard; Cifuentes-García, Francisco-Javier; Glenny Crende, Ignacio; Cheah Mañé, Marc; Aragüés Peñalba, Mònica; Díaz González, Francisco; Gomis Bellmunt, Oriol (2020-09-15)
      Article
      Restricted access - publisher's policy
      Energy storage can play an essential role in large scale photovoltaic power plants for complying with the current and future standards (grid codes) or for providing market oriented services. But not all the energy storage ...
    • A simple and efficient MPPT method for low-power PV cells 

      Penella López, María Teresa; Gasulla Forner, Manuel (2014-01-01)
      Article
      Open Access
      Small-size PV cells have been used to power sensor nodes. These devices present limited computing resources and so low complexity methods have been used in order to extract the maximum power from the PV cells. Among them, ...
    • A statistical based approach for fault detection and diagnosis in a photovoltaic system 

      Garoudja, Elyes; harrou, fouzi; Sun, Ying; kara, kamel; Chouder, Aissa; Silvestre Bergés, Santiago (Institute of Electrical and Electronics Engineers (IEEE), 2017)
      Conference report
      Open Access
      This paper reports a development of a statistical approach for fault detection and diagnosis in a PV system. Specifically, the overarching goal of this work is to early detect and identify faults on the DC side of a PV ...
    • A two-resonance tapping cavity for an optimal light trapping in thin-film solar cells 

      Liu, Quan; Romero Gómez, Pablo; Mantilla Perez, Paola; Colodrero, Silvia; Toudert, Johann; Martorell Pena, Jordi (2017-09-20)
      Article
      Open Access
      An optimal photon absorption in thin film photovoltaic technologies can only be reached by effectively trapping the light in the absorber layer provided a considerable portion of the photons is rejected or scattered out ...
    • A unified current loop tuning approach for grid-connected photovoltaic inverters 

      Zhang, Weiyi; Remón Rodríguez, Daniel; Mir Cantarellas, Antonio; Rodríguez Cortés, Pedro (2016-09-01)
      Article
      Open Access
      High level penetration of renewable energy sources has reshaped modern electrical grids. For the future grid, distributed renewable power generation plants can be integrated in a larger scale. Control of grid-connected ...
    • A virtual power plant model for time-driven power flow calculations 

      Guerra Sánchez, Luis Gerardo; Martínez Velasco, Antonio Benito (2017-11-13)
      Article
      Open Access
      This paper presents the implementation of a custom-made virtual power plant model in OpenDSS. The goal is to develop a model adequate for time-driven power flow calculations in distribution systems. The virtual power plant ...
    • Abastiment d’energia fotovoltaica en una nau industrial 

      Sánchez Gómez, Gerard (Universitat Politècnica de Catalunya, 2022-05-03)
      Bachelor thesis
      Open Access
      El progrés tecnològic governat al llarg dels últims temps, ha generat implícitament una gran demanda energètica precisament per poder dur-lo a terme. Durant aquest temps aquesta demanda ha sigut coberta a partir d’energies ...
    • Active and reactive power control of a PV generator for grid code compliance 

      Cabrera Tobar, Ana; Bullich Massagué, Eduard; Aragüés Peñalba, Mònica; Gomis Bellmunt, Oriol (2019-10-13)
      Article
      Open Access
      As new grid codes have been created to permit the integration of large scale photovoltaic power plants into the transmission system, the enhancement of the local control of the photovoltaic (PV) generators is necessary. ...
    • Active power control in a hybrid PV-storage power plant for frequency support 

      Bullich Massagué, Eduard; Aragüés Peñalba, Mònica; Sumper, Andreas; Boix Aragonès, Oriol (2017-03)
      Article
      Open Access
      The recent increase of intermittent power generation plants connected to the electric power grids may stress the operation of power systems. So, grid codes started considering these power plants should con- tribute to the ...
    • Adaptation of Cu(In, Ga)Se2 photovoltaics for full unbiased photocharge of integrated solar vanadium redox flow batteries 

      Murcia López, Sebastián; Chakraborty, Monalisa; Carretero, Nina; Flox Donoso, Cristina; Morante Lleonart, Joan Ramon; Andreu, Teresa (2019-10-30)
      Article
      Open Access
      The integration of photovoltaics and vanadium redox flow batteries (VRFB) is a promising alternative for the direct conversion and storage of solar energy in a single device, considering their ...
    • Adaptive Volt-Var Control Algorithm to Grid Strength and PV Inverter Characteristics 

      Cantero, Toni; Colet Subirachs, Alba; Canals Casals, Lluc; Corchero García, Cristina; Domínguez García, José Luis; Álvarez de Sotomayor, Amelia; Martin, Williams; Stauffer, Yves; Alet, Pìère-Jean (2021-04-16)
      Article
      Open Access
      The high-penetration of Distributed Energy Resources (DER) in low voltage distribution grids, mainly photovoltaics (PV), might lead to overvoltage in the point of common coupling, thus, limiting the entrance of renewable ...
    • Adequació d’un edifici públic d'ús docent per a una millor eficiència en el consum de recursos i una gestió ambientalment correcte 

      Vega Moreno, Helena (Universitat Politècnica de Catalunya, 2009-05)
      Master thesis (pre-Bologna period)
      Open Access
      En aquest projecte s’estudia la incorporació de mesures en un edifici existent, i dedicat a l’ensenyament primari, per tal d’assolir un doble objectiu: millorar el nivell de confort dels seus usuaris i aconseguir una ...
    • Air stable organic semiconductors based on diindolo[3,2-a:3',2'-c]carbazole 

      Cuadrado Santolaria, Alba; Cuesta, Jessica; Puigdollers i González, Joaquim; Velasco Castrillo, Maria Dolores (2018-11-01)
      Article
      Open Access
      The extension of the p-conjugated 10,15-dihydro-5H-diindolo[3,2-a:3',2'-c]carbazole (triindole) system via the introduction of donor moieties of different nature (phenyl, naphthyl, methylthiophenyl and benzo[b]thienyl) at ...
    • An accurate physical model for PV modules with improved approximations of series-shunt resistances 

      Raya Armenta, Jose Maurilio; Ortega Villasclaras, Pablo Rafael; Bazmohammadi, Najmeh; Spataru, Sergiu V.; Vasquez, Juan Carlos; Guerrero, Josep M. (2021-05)
      Article
      Open Access
      An accurate model to represent the photovoltaic modules is essential to facilitate the efficient deployment of these systems in terms of design, analysis, and monitoring considerations. In this respect, this study proposes ...
    • An anti-islanding method for voltage controlled VSI 

      Llonch Masachs, Marc; Heredero Peris, Daniel; Montesinos Miracle, Daniel (2015)
      Conference lecture
      Restricted access - publisher's policy
      Islanding detection methods have been widely applied and thought for current-controlled voltage source inverters, as in case of photovoltaic inverters. However, some considerations have to be taken into account when ...