Recent Submissions

  • Space vector modulation technique for 3-level NPC converter with constant switching frequency 

    Ouerdani, Imen; Ben Abdelghani, Hafedh; Ben Abdelghani, Afef Bennani; Montesinos Miracle, Daniel; Slama-Belkhodja, Ilhem (HINDAWI, 2016-07-15)
    Article
    Open Access
    This paper presents a simple Space Vector Modulation (SVM) methodology for a three-level NPC converter. Nearest three vectors (NTV) and corresponding duty cycles are deduced through simple generic mathematical expressions. ...
  • Global distribution of winter lightning: a threat to wind turbines and aircraft 

    Montañá Puig, Juan; Fabró Tàpia, Ferran; Van der Velde, Oscar Arnoud; March Nomen, Victor; Williams, Earle R.; Pineda Ruegg, Nicolau; Romero Durán, David; Solà de Las Fuentes, Gloria; Freijo Álvarez, Modesto (2016-01-01)
    Article
    Open Access
    Lightning is one of the major threats to multi-megawatt wind turbines and a concern for modern aircraft due to the use of lightweight composite materials. Both wind turbines and aircraft can initiate lightning, and very ...
  • Statistics and variability of the altitude of elves 

    Van der Velde, Oscar Arnoud; Montañá Puig, Juan (2016-05-07)
    Article
    Open Access
    From June 2008 to January 2016 nearly 800 elves have been recorded by a low-light camera in northeastern Spain. Elves occur in this region mainly over the lower-topped cold airmass maritime thunderstorms, peaking from ...
  • Topologies for large scale photovoltaic power plants 

    Cabrera Tobar, Ana; Bullich Massagué, Eduard; Aragüés Peñalba, Mònica; Gomis Bellmunt, Oriol (2016-06-01)
    Article
    Open Access
    © 2016 Elsevier Ltd. All rights reserved. The concern of increasing renewable energy penetration into the grid together with the reduction of prices of photovoltaic solar panels during the last decade have enabled the ...
  • Power plant control in large-scale photovoltaic plants: Design, implementation and validation in a 9.4 MW photovoltaic plant 

    Bullich Massagué, Eduard; Ferrer San José, Ricard; Aragüés Peñalba, Mònica; Serrano Salamanca, Luis; Pacheco Navas, Carlos; Gomis Bellmunt, Oriol (2016-01-01)
    Article
    Open Access
    © The Institution of Engineering and Technology 2016. This study proposes an algorithm for active and reactive power management in large photovoltaic (PV) power plants. The algorithm is designed in order to fulfil the ...
  • Determination of the recovered-fiber content in paperboard samples by applying mid-infrared spectroscopy 

    Riba Ruiz, Jordi-Roger; Canals Parelló, Trini; Cantero Gómez, María Rosa (2015-04-01)
    Article
    Open Access
    Paperboard is widely used in different applications, such as packaging and graphic printing, among others. Consumption of recycled paper is growing, which has led the paper-mill packaging industry to apply strict quality ...
  • Rare-earth-free propulsion motors for electric vehicles: a technology review 

    Riba Ruiz, Jordi-Roger; López Torres, Carlos; Romeral Martínez, José Luis; García Espinosa, Antonio (2016-05)
    Article
    Restricted access - publisher's policy
    Several factors including fossil fuels scarcity, prices volatility, greenhouse gas emissions or current pollution levels in metropolitan areas are forcing the development of greener transportation systems based on more ...
  • Improvement of dielectric properties of natural rubber by adding perovskite nanoparticles 

    González, Neudys; Riba Ruiz, Jordi-Roger; Lalaouna, Saïd; Custal, Mariàngels; Armelín Diggroc, Elaine Aparecida (2016-02)
    Article
    Restricted access - publisher's policy
    Natural rubber matrix, reinforced with several conventional stabilizer additives, was further charged with perovskite nanoparticles. Although the addition of BaTiO3 ceramic particles usually transforms a non-conducting ...
  • Three-dimensional finite-element analysis of the short-time and peak withstand current tests in substation connectors 

    Capelli, Francesca; Riba Ruiz, Jordi-Roger; Pérez, Joan (2016-05-30)
    Article
    Open Access
    Power devices intended for high-voltage systems must be tested according to international standards, which includes the short-time withstand current test and peak withstand current test. However, these tests require very ...
  • Optimum voltage control for loss minimization in HVDC multi-terminal transmission systems for large offshore wind farms 

    Aragüés Peñalba, Mònica; Egea Àlvarez, Agustí; Gomis Bellmunt, Oriol; Sumper, Andreas (2012-08)
    Article
    Restricted access - publisher's policy
    An optimal power flow based control scheme is proposed in order to minimize the losses in multi-terminal HVDC systems for large offshore wind power plants. The scheme optimizes system power flows while delivering the ...

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