Ara es mostren els items 49-68 de 165

    • Detection of inter-turn faults in five-phase permanent magnet synchronous motors 

      Saavedra Ordóñez, Harold; Riba Ruiz, Jordi-Roger; Romeral Martínez, José Luis (2014-11-27)
      Article
      Accés obert
      Five-phase permanent magnet synchronous motors (PMSMs) have inherent fault-tolerant capabilities. This paper analyzes the detection of inter-turn short circuit faults in five-phase PMSMs in their early stage, i.e. with ...
    • Detection of inter-turn faults in multi-phase ferrite-PM assisted synchronous reluctance machine 

      Candelo Zuluaga, Carlos Andres; Riba Ruiz, Jordi-Roger; López Torres, Carlos; García Espinosa, Antonio (Multidisciplinary Digital Publishing Institute (MDPI), 2019-07-17)
      Article
      Accés obert
      Inter-turn winding faults in five-phase ferrite-permanent magnet-assisted synchronous reluctance motors (fPMa-SynRMs) can lead to catastrophic consequences if not detected in a timely manner, since they can quickly progress ...
    • Detection of inter-turns short circuits in permanent magnet synchronous motors operating under transient conditions by means of the zero sequence voltage 

      Urresty Betancourt, Julio César; Riba Ruiz, Jordi-Roger; Saavedra Ordóñez, Harold; Romeral Martínez, José Luis (2011)
      Text en actes de congrés
      Accés obert
      This work proposes the zero sequence voltage component (ZSVC) of the stator three-phase voltages as a method for detecting winding inter-turns short circuits in permanent magnet synchronous motors PMSM operating under ...
    • Detection of interturn faults in PMSMs with different winding configuration 

      Saavedra Ordóñez, Harold; Urresty Betancourt, Julio César; Riba Ruiz, Jordi-Roger; Romeral Martínez, José Luis (2014-03-03)
      Article
      Accés restringit per política de l'editorial
      Interturn faults in permanent magnet synchronous motors (PMSMs) may develop fast into more severe faults such as coil-to-coil, phase-to-phase and phase-to-ground short circuits. These faults are very destructive and may ...
    • 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
      Accés obert
      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 ...
    • 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
      Accés obert
      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 ...
    • Development of a behavior maps tool to evaluate drive operational boundaries and optimization assessment of PMa-SynRMs 

      López Torres, Carlos; Colls Castro, Carles; García Espinosa, Antonio; Riba Ruiz, Jordi-Roger; Romeral Martínez, José Luis (Institute of Electrical and Electronics Engineers (IEEE), 2018-04-05)
      Article
      Accés obert
      The trend in traction motor design and optimization is to achieve high torque and power densities, wider speed range and high efficiency within the area defining the most frequent operating points. A fast tool to evaluate ...
    • Dielectric response of vulcanized natural rubber containing BaTiO3 filler: the role of particle functionalization 

      González Gómez, Neudys; Custal, Maria del Àngels; Tomara, Georgia N.; Psarras, Georgios C.; Riba Ruiz, Jordi-Roger; Armelín Diggroc, Elaine Aparecida (2017-12)
      Article
      Accés obert
      Natural rubber (NR) nanocomposites have been prepared with hydroxylated barium titanate filler (BaTiO3-OH), employing emulsion polymerization followed by vulcanization process. The addition of barium titanate, a compound ...
    • Drug effect on EEG connectivity assessed by linear and nonlinear couplings 

      Alonso López, Joan Francesc; Mañanas Villanueva, Miguel Ángel; Romero Lafuente, Sergio; Hoyer, Dirk; Riba Ruiz, Jordi-Roger; Barbanoj, Manel J. (2010-03)
      Article
      Accés restringit per política de l'editorial
      Quantitative analysis of human electroencephalogram (EEG) is a valuable method for evaluating psychopharmacological agents. Although the effects of different drug classes on EEG spectra are already known, interactions ...
    • Dynamic evaluation of fringing flux in linear electromechanical devices 

      García Espinosa, Antonio; Riba Ruiz, Jordi-Roger; Cusidó Roura, Jordi; Romeral Martínez, José Luis; Ortega Redondo, Juan Antonio (2010-03-12)
      Article
      Accés restringit per política de l'editorial
      Accurate dynamic models of electromechanical devices are essential in order to develop effective motion control strategies of such devices. The effects of fringing flux can not be ignored when dealing with electromagn ...
    • Ecologia Industrial aplicada al sector adober de Catalunya 

      Puig Vidal, Rita; Cervantes Torre-Marín, Gemma; Rius Carrasco, Antoni; Martí Badia, Maria Elena; Solé Gustems, Miquel; Riba Ruiz, Jordi-Roger (2008)
      Article
      Accés restringit per política de l'editorial
      L'objectiu del projecte presentat aquí (que forma part del projecte CICLE), és conèixer la situació actual d'aprofitament i reciclatge de residues del sector adober català i fer propostes de millora seguint els principis ...
    • Ecologia Industrial aplicada al sector paperer de Catalunya 

      Puig Vidal, Rita; Rius Carrasco, Antoni; Martí Badia, Maria Elena; Solé Gustems, Miquel; Riba Ruiz, Jordi-Roger; Fullana Palmer, Pere (2008)
      Article
      Accés restringit per política de l'editorial
      L'objectiu del projecte presentat aquí (que forma part del projecte CICLE), és conèixer la situació actual d'aprofitament i reciclatge de residus del sector paperer català i fer propostes de millora seguint els principis ...
    • Electric systems 

      Riba Ruiz, Jordi-Roger (EUETII, UPC, 2010-09-15)
      Llibre
      Accés obert
    • Electrotecnia : problemas 

      Alabern Morera, Francesc Xavier; Riba Ruiz, Jordi-Roger (Edicions UPC, 2006)
      Llibre
      Accés restringit a la comunitat UPC
      Este libro es un conjunto de problemas resueltos del área de la ingeniería eléctrica, fruto de la larga experiencia acumulada por los autores en la docencia de la asignatura Electrotecnia en la ETSEIAT de la UPC. Trata ...
    • Energy balance of wireless sensor nodes based on bluetooth low energy and thermoelectric energy harvesting 

      Liu, Yuming; Riba Ruiz, Jordi-Roger; Moreno Eguilaz, Juan Manuel (Multidisciplinary Digital Publishing Institute (MDPI), 2023-01-28)
      Article
      Accés obert
      The internet of things (IoT) makes it possible to measure physical variables and acquire data in places that were impossible a few years ago, such as transmission lines and electrical substations. Monitoring and fault ...
    • Energy harvesting methods for transmission lines: a comprehensive review 

      Riba Ruiz, Jordi-Roger; Moreno Eguilaz, Juan Manuel; Bogarra Rodríguez, Santiago (Multidisciplinary Digital Publishing Institute, 2022-10-22)
      Article
      Accés obert
      Humanity faces important challenges concerning the optimal use, security, and availability of energy systems, particularly electrical power systems and transmission lines. In this context, data-driven predictive maintenance ...
    • Environmental and cost optimal design of a biomass–Wind–PV electricity generation system 

      González Juncà, Arnau; Riba Ruiz, Jordi-Roger; Esteban Dalmau, Bernat; Rius Carrasco, Antoni (2018-10-01)
      Article
      Accés obert
      This work describes a methodology to optimize a grid-connected hybrid renewable energy system (HRES) that hybridizes photovoltaic, wind and forest biomass energy sources taking into account cost and environmental impact ...
    • Environmental life cycle assessment of rapeseed straight vegetable oil as self-supply agricultural biofuel 

      Baquero Armans, Grau; Esteban Dalmau, Bernat; Puig Vidal, Rita; Riba Ruiz, Jordi-Roger; Rius Carrasco, Antoni (2013-02-01)
      Article
      Accés obert
      Biofuels are nowadays considered a questionable environmental alternative to fossil fuels. In that context, this work analyses the environmental impacts when introducing rapeseed on the traditional and current wheat and ...
    • Estudi econòmic de l'oli de colza com a biocarburant en explotacions agrícoles 

      Baquero Armans, Grau; Esteban Dalmau, Bernat; Puig Vidal, Rita; Riba Ruiz, Jordi-Roger; Rius Carrasco, Antoni (2010-01-01)
      Report de recerca
      Accés restringit per política de l'editorial
      Actualment els biocarburants ocupen una important àrea d’estudi, essent el biodièsel i el bioetanol els més utilitzats en el nostre territori. La major part d’aquests biocarburants són de primera generació i la seva ...
    • Evaluation of machine learning techniques for electro-mechanical system diagnosis 

      Delgado Prieto, Miquel; García Espinosa, Antonio; Urresty Betancourt, Julio César; Riba Ruiz, Jordi-Roger; Ortega Redondo, Juan Antonio (IEEE Press. Institute of Electrical and Electronics Engineers, 2011)
      Text en actes de congrés
      Accés obert
      The application of intelligent algorithms, in electro-mechanical diagnosis systems, is increasing in order to reach high Reliability and performance ratios in critical and complex scenarios. In this context, different ...