Enviaments recents

  • Estimating the impact of azimuth-angle variations on photovoltaic annual energy production 

    Dhimish, Mahmoud; Silvestre Bergés, Santiago (2019-02-06)
    Article
    Accés obert
    The performance of a photovoltaic (PV) installation is affected by its tilt and azimuth angles, because these parameters change the amount of solar energy absorbed by the surface of the PV modules. Therefore, this paper ...
  • PI-based controller for low-power distributed inverters to maximise reactive current injection while avoiding over voltage during voltage sags 

    Miret Tomàs, Jaume; Garnica López, Miguel Andrés; Castilla Fernández, Miguel; García de Vicuña Muñoz de la Nava, José Luis; Camacho Santiago, Antonio (2018-10-25)
    Article
    Accés obert
    In the recently deregulated power system scenario, the growing number of distributed generation sources should be considered as an opportunity to improve stability and power quality along the grid. To make progress in this ...
  • Laser Ultrasound Inspection Based on Wavelet Transform and Data Clustering for Defect Estimation in Metallic Samples 

    Mohamed Selim, Hossameldin; Delgado Prieto, Miquel; Trull Silvestre, José Francisco; Romeral Martínez, José Luis; Cojocaru, Crina (Multidisciplinary Digital Publishing Institute (MDPI), 2019-01-30)
    Article
    Accés obert
    Laser-generated ultrasound is a modern non-destructive testing technique. It has been investigated over recent years as an alternative to classical ultrasonic methods, mainly in industrial maintenance and quality control ...
  • Optimized model-based design space exploration of distributed multi-orbit multi-platform Earth observation spacecraft architectures 

    Araguz López, Carles; Llaveria Godoy, David; Lancheros Sepulveda, Estefany Maria; Bou Balust, Elisenda; Camps Carmona, Adriano José; Alarcón Cot, Eduardo José; Lluch, I.; Matevosyan, H.; Golkar, Alessandro; Tonetti, Stefania; Cornara, Stefania; Pierotti, S.; Rodríguez Mondelo, Pedro Manuel; Alvaro Sanchez, A.; Narkiewicz, J. (Institute of Electrical and Electronics Engineers (IEEE), 2018)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    Satellite architectures where networked, heterogeneous observation nodes capture data in a distributed manner are seen as feasible solutions to address the needs of next-generation Earth observation services (i.e. higher ...
  • Optical power model of a laser bar diode 

    Borràs Cristòfol, Ramon; Río Fernandez, Joaquín del; Oriach, Carles; Juliachs, Jordi (Institute of Physics (IOP), 2018)
    Text en actes de congrés
    Accés obert
    This article proposes a modelling method for laser diodes optical output power including its dependency on temperature. The device used for this study is a 40 W Monocrom's diode, with 808 nm wavelength emitted light and ...
  • Real-time wireless, contactless and coreless monitoring of the current distribution in substation conductors for fault diagnosis 

    Kadechkar, Akash; Riba Ruiz, Jordi-Roger; Moreno Eguilaz, Juan Manuel; Sanllehí Muñoz, Josep (2018-12-03)
    Article
    Accés restringit per política de l'editorial
    Parallel conductors are found in electrical transmission and distribution systems including large ampacity feeders or loads. However, current unbalance often occurs, especially in alternating current systems. This non-regular ...
  • Challenge based education: an approach to innovation through multidisciplinary teams of students using Design Thinking 

    Charosky, Guido; Leveratto, Luciana; Hassi, Lotta; Papageorgiou, K.; Ramos Castro, Juan José; Bragós Bardia, Ramon (Institute of Electrical and Electronics Engineers (IEEE), 2018)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    This work aims to describe and discuss the benefits and learning outcomes detected along four iterations of a learning experience carried out by three institutions: ESADE Business School, IED Istituto Europeo di Design and ...
  • Terahertz dielectric resonator antenna coupled to graphene plasmonic dipole 

    Hosseininejad, Seyed Ehsan; Neshat, Mohammad; Faraji-Dana, Reza; Abadal Cavallé, Sergi; Lemme, Max; Bolívar, Peter Haring; Alarcón Cot, Eduardo José; Cabellos Aparicio, Alberto (Institute of Electrical and Electronics Engineers (IEEE), 2018)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    This paper presents an efficient approach for exciting a dielectric resonator antenna (DRA) in the terahertz frequencies by means of a graphene plasmonic dipole. Design and analysis are performed in two steps. First, the ...
  • Textile wearable antenna sensors based on open ring resonators 

    Moradi, Bahareh; Fernández García, Raúl; Gil Galí, Ignacio (Institute of Electrical and Electronics Engineers (IEEE), 2018)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    In this paper, a wearable antenna sensor based on a textile open ring resonator is presented. The antenna sensor consists of an open ring resonator whose resonance frequency is modified due to the antenna bending impact. ...
  • Phononic crystal device as a self-collimator for laser induced ultrasound 

    Mohamed Selim, Hossameldin; Pico Vila, Rubén; Trull Silvestre, José Francisco; Delgado Prieto, Miquel; Cojocaru, Crina (Sociedad Española de Acústica (SEA), 2018)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    Laser generated ultrasound has gained interest as an alternative source of ultrasound thanks to its remote operation, high resolution in the excitation area and broad frequency band. However, one of its drawbacks is the ...
  • Material defect reconstruction by non-destructive testing with laser induced ultrasonics 

    Mohamed Selim, Hossameldin; Delgado Prieto, Miquel; Trull Silvestre, José Francisco; Pico Vila, Rubén; Cojocaru, Crina (Institute of Physics (IOP), 2018)
    Text en actes de congrés
    Accés obert
    Aligned with current research efforts and industrial applications on nondestructive testing, in this work, a hybrid system combining remotely induced laser ultrasonics with conventional transducer detection is studied for ...
  • Microcontroller-Based Seat Occupancy Detection and Classification 

    Sifuentes, Ernesto; González Landaeta, Rafael; Cota Ruiz, Juan; Reverter Cubarsí, Ferran (Multidisciplinary Digital Publishing Institute (MDPI), 2018)
    Comunicació de congrés
    Accés obert
    This paper presents a microcontroller-based measurement system to detect and confirm the presence of a subject in a chair. The system relies on a single Force Sensing Resistor (FSR), which may be arranged in the seat or ...

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