Recent Submissions

  • Comparative analysis of SVM techniques for a five-phase VSI based on SiC devices 

    Acosta Cambranis, Fernando Geovany; Zaragoza Bertomeu, Jordi; Romeral Martínez, José Luis; Berbel Artal, Néstor (2020-12-14)
    Article
    Open Access
    Multiphase systems provides benefits compared to three-phase systems, such as improved torque per ampere, high power density, better fault tolerance, lower current per phase (due to power-splitting among a higher number ...
  • A revised solution for a sphere rolling in a vertical loop 

    Bertran Cànovas, Òscar; Riba Ruiz, Jordi-Roger (2020-09-30)
    Article
    Restricted access - publisher's policy
    In this paper the classical well known solution of the elementary problem of the sphere loop in the presence of friction is studied. Also, a modification of the problem shows a possible inaccuracy involved on the well known ...
  • Time series RUL estimation of medium voltage connectors to ease predictive maintenance plans 

    Gómez-Pau, Álvaro; Riba Ruiz, Jordi-Roger; Moreno Eguilaz, Juan Manuel (2020-12-17)
    Article
    Open Access
    The ageing process of medium voltage power connectors can lead to important power system faults. An on-line prediction of the remaining useful life (RUL) is a convenient strategy to prevent such failures, thus easing the ...
  • Insulation failure quantification based on the energy of digital images using low-cost imaging sensors 

    Riba Ruiz, Jordi-Roger; Gómez-Pau, Álvaro; Moreno Eguilaz, Juan Manuel (Multidisciplinary Digital Publishing Institute (MDPI), 2020-12-16)
    Article
    Open Access
    Insulation faults in high-voltage applications often generate partial discharges (PDs) accompanied by corona activity, optical radiation mainly in the ultraviolet (UV) and visible bands. Recent developments in low-cost, ...
  • On-line health condition monitoring of power connectors focused on predictive maintenance 

    Martínez Reyes, Jimmy Arturo; Gómez-Pau, Álvaro; Riba Ruiz, Jordi-Roger; Moreno Eguilaz, Juan Manuel (Institute of Electrical and Electronics Engineers (IEEE), 2020-12-16)
    Article
    Restricted access - publisher's policy
    Electrical power connectors are critical points of electrical networks. Failure in high-voltage connectors may result in major power outages, safety risks and important economic consequences. Therefore, there is an imperious ...
  • Detection of partial demagnetization faults in five-phase permanent magnet assisted synchronous reluctance machines 

    Candelo Zuluaga, Carlos Andres; Riba Ruiz, Jordi-Roger; Thangamuthu, Dinesh V; García Espinosa, Antonio (2020-07-03)
    Article
    Open Access
    This paper analyzes partial demagnetization faults in a five-phase permanent magnet assisted synchronous reluctance motor (fPMa-SynRM) incorporating ferrite permanent magnets (PMs). These faults are relevant because of the ...
  • SmartConnector: A Self-Powered IoT Solution to Ease Predictive Maintenance in Substations 

    Kadechkar, Akash; Riba Ruiz, Jordi-Roger; Moreno Eguilaz, Juan Manuel; Pérez Lobato, Joan (2020-05-28)
    Article
    Restricted access - publisher's policy
    The increased dependency on electricity of modern society makes reliability of power transmission systems a key point. This goal can be achieved by continuously monitoring power grid parameters, so possible failure modes ...
  • Directional ultrasound source for solid materials inspection: diffraction management in a metallic phononic crystal 

    Mohamed Selim, Hossameldin; Pico Vila, Rubén; Trull Silvestre, José Francisco; Delgado Prieto, Miquel; Cojocaru, Crina (Multidisciplinary Digital Publishing Institute (MDPI), 2020-10-29)
    Article
    Open Access
    <jats:p>In this work, we numerically investigate the diffraction management of longitudinal elastic waves propagating in a two-dimensional metallic phononic crystal. We demonstrate that this structure acts as an “ultrasonic ...
  • Circular economy of post-consumer textile waste: classification through infrared spectroscopy 

    Riba Ruiz, Jordi-Roger; Cantero, Rosa; Canals, Trini; Puig Vidal, Rita (2020-11-01)
    Article
    Restricted access - publisher's policy
    The textile and fashion industry is amongst the most resource-intensive and polluting industries, thus impacting the natural environment. During the last decades, there has been an increase in the manufacturing of textiles. ...
  • Sensor comparison for corona discharge detection under low pressure conditions 

    Riba Ruiz, Jordi-Roger; Gómez Pau, Álvaro; Moreno Eguilaz, Juan Manuel (2020-06-01)
    Article
    Open Access
    Low pressure environments, situate insulation systems in a challenging position since partial discharges (PDs), corona and arc tracking are more likely to develop. Therefore, specific solutions are required to detect such ...
  • Non-linear least squares optimization for parametric identification of DC-DC converters 

    Rojas Dueñas, Gabriel; Riba Ruiz, Jordi-Roger; Moreno Eguilaz, Juan Manuel (Institute of Electrical and Electronics Engineers (IEEE), 2020-06-19)
    Article
    Open Access
    Switching mode power converters are being extensively applied in different power conversion systems. Parameter identification comprises a set of techniques focused on extracting the relevant parameters of the converters ...
  • Uprating of transmission lines by means of HTLS conductors for a sustainable growth: challenges, opportunities, and research needs 

    Riba Ruiz, Jordi-Roger; Bogarra Rodríguez, Santiago; Gómez Pau, Álvaro; Moreno Eguilaz, Juan Manuel (2020-12-01)
    Article
    Restricted access - publisher's policy
    This paper provides a comprehensive and critical review and evaluation of the technological state-of-the-art of high-temperature low-sag (HTLS) conductors by analyzing research articles, theses, reports, white papers and ...

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