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  • Feasibility analysis of reduced-scale visual corona tests in high-voltage laboratories 

    Abomailek, Carlos; Riba Ruiz, Jordi-Roger; Casals Torrens, Pau (2019-06-18)
    Article
    Open Access
    Corona is a critical effect that must be considered during the design and optimization stages of high-voltage hardware such as substation connectors, since due to the harmful effects, corona threats power systems reliability. ...

  • Analysis and mitigation of stray capacitance effects in resistive high-voltage dividers 

    Riba Ruiz, Jordi-Roger; Capelli, Francesca; Moreno Eguilaz, Juan Manuel (Multidisciplinary Digital Publishing Institute (MDPI), 2019-06-14)
    Article
    Open Access
    This work analyzes the effects of the parasitic or stray distributed capacitance to ground in high-voltage environments and assesses the effectiveness of different corrective actions to minimize such effects. To this ...

  • Polarimetric radar characteristics of lightning initiation and propagating channels 

    Figueras i Ventura, Jordi; Pineda Rüegg, Nicolau; Besic, Nikola; Grazioli, Jacopo; Hering, Alessandro; Van der Velde, Oscar Arnoud; Romero Durán, David; Sunjerga, A.; Mostajabi, A.; Azadifar, M.; Rubinstein, M.; Montañá Puig, Juan; Germann, Urs; Rachidi-Haeri, Farhad (2019-05-27)
    Article
    Open Access
    In this paper we present an analysis of a large dataset of lightning and polarimetric weather radar data collected in the course of a lightning measurement campaign that took place in the summer of 2017 in the area surrounding ...

  • On the TGF/lightning ratio asymmetry 

    Fabró Tàpia, Ferran; Montañá Puig, Juan; Van der Velde, Oscar Arnoud; Pineda Rüegg, Nicolau; Williams, Earle R. (2019-05-14)
    Article
    Open Access
    Africa is one of the most productive lightning regions on Earth, yet it has a lower TGF-to-lightning ratio especially compared with Central America. In this paper we have analyzed the global distribution of different ...

  • Optimal feeder flow control for grid connected microgrids 

    Bullich Massagué, Eduard; Aragüés Peñalba, Mònica; Prieto Araujo, Eduardo; Sumper, Andreas; Caire, Raphael (2019-11-01)
    Article
    Restricted access - publisher's policy
    The optimal management of distributed energy resources is one of theexisting challenges for the deployment of microgrids. When microgrids op-erate under feeder flow control mode, trying to maintain a constant self-consumption, ...

  • Five-level T-type cascade converter for rooftop grid-connected photovoltaic systems 

    Verdugo Retamal, Cristian Andrés; Kouro, Samir; Rojas, Christian A.; Pérez, Marcelo A.; Meynard, Thierry A.; Malinowski, Mariusz (2019-05-08)
    Article
    Open Access
    Multilevel converters are widely considered to be the most suitable configurations for renewable energy sources. Their high-power quality, efficiency and performance make them interesting for PV applications. In low-power ...

  • Charge structure of two tropical thunderstorms in Colombia 

    López Trujillo, Jesús Alberto; Montañá Puig, Juan; Van der Velde, Oscar Arnoud; Pineda Rüegg, Nicolau; Salvador Yuste, Albert; Romero Durán, David; Aranguren Fino, Harby Daniel; Taborda, John (2019-04-23)
    Article
    Open Access
    Charge structure derived from lightning leader development of tropical thunderstorms comprising equatorial latitudes of < ±10° has not been investigated yet. In this work, using a Lightning Mapping Array (LMA) installed ...

  • Comparison of mechanical and electrical characteristics of various polymers blended with ground tire rubber (GTR) and applications 

    Marín Genescà, Marc; Garcia Amoros, Jordi; Mujal-Rosas, Ramon Maria; Salueña Berna, Javier; Massagués, Lluís (2019-04-15)
    Article
    Open Access
    The massive manufacture of tires and the di culty of reducing the stocks of used tires is a serious environmental problem. There are several methods used for recycling wasted tires, one of which is mechanical crushing, in ...

  • Omron lanza su versión 1.30 de Motor Sizing Tool 

    Heredero Peris, Daniel; Bustamante, José-Ignacio; Sudrià Andreu, Antoni; Montesinos Miracle, Daniel (2019-04-10)
    Article
    Open Access
    La herramienta software para el diseño de aplicaciones de motion control permite acortar los plazos de (re)diseño y anticiparse a reconocer nuevas necesidades.CITCEA-UPC trabaja con Omron Corporation en el desarrollo de ...

  • Development of sustainable energy indexes by the utilization of new indicators: A comparative study 

    Razmjoo, Armin; Sumper, Andreas; Davarpanah, Afshin (Elsevier Ltd, 2019-11-01)
    Article
    Open Access
    Decision making to improve energy sustainability requires scientifically information based on sustainability. Since there are different sustainability targets and specific decision problems in this regard, hence to achieve ...

  • Impedance measurement and detection frequency bandwidth, a valid island detection proposal for voltage controlled inverters 

    Llonch Masachs, Marc; Heredero Peris, Daniel; Chillón Antón, Cristian; Montesinos Miracle, Daniel; Villafafila Robles, Roberto (Multidisciplinary Digital Publishing Institute, 2019-03-18)
    Article
    Open Access
    Anti-islanding detection methods have been part of a secure operation for distributed energy resource inverters, avoiding the creation of non-intentional energization when the mains are lost. These detection mechanisms ...

  • Advanced quiz development for students’ self-learning in power generation, transmission and distribution 

    Bogarra Rodríguez, Santiago; Corbalán Fuertes, Montserrat; Plaza, Inmaculada (SAGE PUBLICATIONS INC, 2019)
    Article
    Restricted access - publisher's policy
    Students’ learning can be improved by using online quizzes with a valuable feedback, especially in large groups, making it very interesting for engineering subjects which are based on mathematics. This paper presents the ...

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