Now showing items 1-17 of 17

    • A nonlinear kinetic energy harvester for light suface ocean drifters 

      Toma, Daniel; Carandell Widmer, Matias; Carbonell Ventura, Montserrat; Vals, Lluis; Río Fernandez, Joaquín del (SARTI, 2018)
      Article
      Open Access
      A nonlinear kinetic energy harvester for ocean drifter devices is presented. The design contains a gyroscopic wave energy harvesting system, capable of generating power from the wave-induced translational and rotational ...
    • An integrated biogeochemistry observation system at Besòs estuary 

      Toma, Daniel; Artero Delgado, Carola; Martínez Padró, Enoc; Cadena Muñoz, Francisco Javier; Nogueras Cervera, Marc; Carandell Widmer, Matias; Río Fernandez, Joaquín del; Gomáriz Castro, Spartacus (2021)
      Conference report
      Open Access
      Estuaries are coastal indentations where freshwater mixes with seawater (Pritchard 1967), and are found everywhere in the world. Moreover, the estuarine ecosystems are usually characterized by high biological productivity ...
    • Convertidor puente H-NPC con devanados abiertos como inversor central en aplicaciones fotovoltaicas trifásicas de gran escala 

      Carandell Widmer, Matias (Universitat Politècnica de Catalunya / Universidad Técnica Federico Santa María, 2015)
      Master thesis
      Open Access
      Covenantee:   Universidad Técnica Federico Santa María
    • Data comparison between three acoustic doppler current profilers deployed in OBSEA platform in North-Western Mediterranean 

      Carandell Widmer, Matias; Nogueras Cervera, Marc (SARTI, 2016)
      Conference lecture
      Open Access
      Three different Acoustic Doppler Current Profilers (ADCP) have been deployed in OBSEA platform, a 20 meters depth underwater observatory cabled with a 4 km mixt cable to Vilanova i la Geltru’s coast. Two months of ...
    • Data comparison between three acoustic doppler current profilers deployed in OBSEA platform in north-western Mediterranean 

      Carandell Widmer, Matias; Nogueras Cervera, Marc; Chumbinho, Rogério; Molina, Cristiobal (2016)
      Conference report
      Open Access
      Three different Acoustic Doppler Current Profilers (ADCP) have been deployed in OBSEA platform, a 20 meters depth underwater observatory cabled with a 4 km mixt cable to Vilanova i la Geltru’s coast. Two months of continuous ...
    • Design and development of a kinetic energy harvester device for oceanic drifter applications 

      Carandell Widmer, Matias; Toma, Daniel; Carbonell Ventura, Montserrat; Gasulla Forner, Manuel; Río Fernandez, Joaquín del (Institute of Electrical and Electronics Engineers (IEEE), 2019)
      Conference report
      Open Access
      A novel electronic energy harvester (EH) has been developed for oceanic undrogued drifter applications. First, spherical body motion simulation has been performed at sea environment in Orcaflex. Results help to understand ...
    • Design and testing of a kinetic energy harvester embedded into an oceanic drifter 

      Carandell Widmer, Matias; Toma, Daniel; Carbonell Ventura, Montserrat; Río Fernandez, Joaquín del; Gasulla Forner, Manuel (2020-02-28)
      Article
      Open Access
      A novel Kinetic Energy Harvester (KEH) has been developed for powering oceanic undrogued drifters. It consists on a double pendulum system capable of transforming the wave oscillations into rotation on a flywheel. This ...
    • Dynamic analysis of a pendulum-type wave energy converter for oceanic drifters by means of a 4 DoF model 

      Ortiz de Haro, Joan; Carandell Widmer, Matias; Barjau Condomines, Ana (2021)
      Conference report
      Open Access
      A 4 DoF analytical model for a drifter with an embedded simple pendulum with energy harvesting purposes have been developed. The Lagrange equations have been used to obtain the motion model while Morrison and Airy’s theorems ...
    • Evaluation of SigFox LPWAN technology for autonomous sensors in coastal applications 

      Carandell Widmer, Matias; Toma, Daniel; Río Fernandez, Joaquín del; Ganchev, Kaloyan; Peudennier, Julien (SARTI, 2018)
      Article
      Open Access
      A low-power wide-area network (LPWAN) is a wireless communication network designed to send low bit rates in a long-range communication. SigFox is a LPWAN technology that uses Ultra Narrow Band to communicate packages of ...
    • Evaluation of two MPPT techniques in low-power pendulum-type wave energy converters 

      Carandell Widmer, Matias; Toma, Daniel; Gasulla Forner, Manuel; Río Fernandez, Joaquín del (2021)
      Conference report
      Open Access
      Two Maximum Power Point Tracking (MPPT) techniques have been tested on a Power Management Unit (PMU) which efficiently controls the generated energy of a Kinetic Energy Harvester (KEH) for drifter applications. Tests have ...
    • Experimental validation of a kinetic energy harvester device for oceanic drifter applications 

      Carandell Widmer, Matias; Toma, Daniel; Gasulla Forner, Manuel; Río Fernandez, Joaquín del (2019)
      Conference lecture
      Restricted access - publisher's policy
      A Kinetic Energy Harvester (KEH) device under design for drifter applications has been tested at real sea conditions in a controlled area. The KEH consists on a pendulum system capable to transform the oscillations of the ...
    • Impact on the wave parameters estimation of a kinetic energy harvester embedded into a drifter 

      Carandell Widmer, Matias; Toma, Daniel; Pinto, José P.; Gasulla Forner, Manuel; Río Fernandez, Joaquín del (Institute of Electrical and Electronics Engineers (IEEE), 2020)
      Conference lecture
      Restricted access - publisher's policy
      The effect of a Kinetic Energy Harvester (KEH) on the wave parameters estimation at a WAVY Ocean (WO) drifter is being studied. An algorithm has been developed to calculate the wave parameters from the Inertial Measuring ...
    • OBSEA, a marine sensor testing site for metrology 

      Carandell Widmer, Matias; Garcia Benadí, Albert; Río Fernandez, Joaquín del (2017)
      Conference report
      Open Access
      Marine sensors needs to be tested in real and controlled environments in order to assure, both, proper functionality of the sensor and good enough measurements. Most of the times is not enough testing on the lab, field ...
    • Obsea: a decadal balance for a cabled observatory deployment 

      Río Fernandez, Joaquín del; Nogueras Cervera, Marc; Toma, Daniel; Martínez Padró, Enoc; Artero Delgado, Carola; Bghiel, Ikram; Cadena Muñoz, Francisco Javier; Garcia Benadí, Albert; Sarriá Gandul, David; Aguzzi, Jacopo; Masmitjà Rusiñol, Ivan; Carandell Widmer, Matias; Olivé Duran, Joaquim; Gomáriz Castro, Spartacus; Santamaria, Josep; Manuel Lázaro, Antonio (Institute of Electrical and Electronics Engineers (IEEE), 2020-02-13)
      Article
      Open Access
      The study of the effects of climate change on the marine environment requires the existence of sufficiently long time series of key parameters. The study of these series allows both to characterize the range of variability ...
    • Optimum MPPT strategy for low-power pendulum-type wave energy converters 

      Carandell Widmer, Matias; Toma, Daniel; Río Fernandez, Joaquín del; Gasulla Forner, Manuel (Institute of Electrical and Electronics Engineers (IEEE), 2020)
      Conference lecture
      Restricted access - publisher's policy
      Maximum Power Point Tracking (MPPT) techniques for low-power pendulum-type Wave Energy Converters were evaluated. A Kinetic Energy Harvester previously designed, together with a Power Management Unit, were tested on a ...
    • Real-time wave monitoring on coastal areas using LPWAN-based embedded systems 

      Carandell Widmer, Matias; Toma, Daniel; Artero Delgado, Carola; Gasulla Forner, Manuel; Río Fernandez, Joaquín del (2021)
      Conference report
      Restricted access - publisher's policy
      A new embedded system is presented for real-time wave monitoring on coastal areas using SigFox communication. SigFox is a Low-Power Wide-Area Network technology that has been rarely used in coastal marine monitoring. The ...
    • Underwater acoustic slant range measurements related to weather and sea state 

      Masmitjà Rusiñol, Ivan; Carandell Widmer, Matias; Bouvet, Pierre-Jean; Aguzzi, Jacopo; Gomáriz Castro, Spartacus; Río Fernandez, Joaquín del (Institute of Physics (IOP), 2018)
      Conference report
      Open Access
      Underwater range measurements are key factor in underwater acoustic positioning, used in Long Base-Line (LBL) or Ultra Short Base-Line (USBL) computing techniques. These measurements are commonly carried out through acoustic ...