Now showing items 1-20 of 41

    • A communication-less control scheme for a variable air-gap wireless energy transfer system using current source resonant converter 

      Ghahderijani, Mohammad Moradi; Castilla Fernández, Miguel; Rey López, Juan Manuel; Torres Martínez, Javier; Garnica López, Miguel Andrés (Institute of Electrical and Electronics Engineers (IEEE), 2017)
      Conference report
      Restricted access - publisher's policy
      This paper presents a robust control method for wireless energy transfer systems using current source resonant converter without any communication network. The proposed control strategy is valid even for systems with ...
    • A systematic review of machine learning techniques related to local energy communities 

      Hernández Matheus, Alejandro Henrique; Löschenbrand, Markus; Berg, Kjersti; Fuchs, Ida; Aragüés Peñalba, Mònica; Bullich Massagué, Eduard; Sumper, Andreas (2022-12)
      Article
      Open Access
      In recent years, digitalisation has rendered machine learning a key tool for improving processes in several sectors, as in the case of electrical power systems. Machine learning algorithms are data-driven models based on ...
    • Analysis, design and implementation of a residential inductive contactless energy transfer system with multiple mobile clamps 

      Momeneh, Arash; Castilla Fernández, Miguel; Moradi Ghahderijani, Mohammad; Miret Tomàs, Jaume; García de Vicuña Muñoz de la Nava, José Luis (2017-06-30)
      Article
      Open Access
      This study presents the analysis, design and implementation of a simple and cost-effective residential inductive contactless energy transfer system with multiple mobile clamps. The topology is based on the cascaded connection ...
    • Control method for wireless inductive energy transfer systems with relatively large air gap 

      Van Der Pijl, Frank F. A; Bauer, Pavol T.; Castilla Fernández, Miguel (IEEE Press. Institute of Electrical and Electronics Engineers, 2013)
      Article
      Restricted access - publisher's policy
      Recent improvements in semiconductor technology make efficient switching possible at higher frequencies, which benefits the application of wireless inductive energy transfer. However, a higher frequency does not alter ...
    • Cubiertas verdes y rehabilitación: procesos de participación y cooperación universidad empresa 

      Bosch González, Montserrat; Rodríguez Cantalapiedra, Inma; Lacasta Palacio, Ana María; Calvo, Lidia; Boleda Torrent, Martí (2018)
      Conference report
      Open Access
      Las cubiertas vegetales pueden aportar interesantes beneficios a la edificación existente: mejoras en el comportamiento térmico; propiedades acústicas; regulación de las aguas pluviales; y en clave ciudad, mejorar los ...
    • Development of a power flow model for the transmission network of the iberian peninsula 

      Alonso Pérez, Javier (Universitat Politècnica de Catalunya / Technishe Universität Berlin, 2015)
      Master thesis (pre-Bologna period)
      Open Access
      Covenantee:   Technische Universität Berlin
      Over the last years, due to the increasing use of renewable energy, the typical way of producing and transporting electricity in Iberian Peninsula has changed. The way to produce energy has evolved from thermal and hydraulic ...
    • Dynamic simulations of an absorption system with different working pairs at chiller and heat pump application 

      Zheng, Jian; Castro González, Jesús; Oliet Casasayas, Carles (Purdue University, 2021)
      Conference report
      Restricted access - publisher's policy
      This work describes the dynamic simulation of a direct air-cooled single effect solar-driven absorption system and demonstrates the numerical results of the absorption system with different working pairs. The working pairs ...
    • Energy driven transmission schemes for coexistence between HTC and MTC 

      Liesegang Maria, Sergi; Pascual Iserte, Antonio; Muñoz Medina, Olga (VDE Verlag, 2021)
      Conference report
      Open Access
      Coexistence between human-type and machine-type communications is essential in future cellular networks. The former demands high data rates whereas long battery lifetimes are crucial for the latter. In this paper, we ...
    • Energy-consistent discretization of viscous dissipation with application to natural convection flows 

      Sanderse, Benjamin; Trias Miquel, Francesc Xavier (European Research Community on Flow, Turbulence, and Conbustion (ERCOFTAC), 2023)
      Conference report
      Open Access
      An energy-consistent formulation of incompressible natural convection flows is proposed. In particular, a discretization of the viscous dissipation term is derived which is consistent with the local kinetic energy equation ...
    • Estació de càrrega de drons 

      Shojaei Sola, David (Universitat Politècnica de Catalunya, 2020-06)
      Bachelor thesis
      Open Access
      El projecte consisteix en el disseny i simulació d’un ondulador, que genera un senyal amb freqüència suficient per a fer entrar en ressonància un tanc ressonantemissorcol·locat a laseva sortida.Gràcies a la part inductiva ...
    • Estudi d’un sistema de càrrega dinàmica sense fils 

      Chordà Herrera, Marc (Universitat Politècnica de Catalunya, 2021-01-13)
      Bachelor thesis
      Restricted access - author's decision
      Aquest treball s’enfoca en el món dels vehicles elèctrics i els sistemes de càrrega sense fils, per les grans avantatges que presenten i el gran mercat que s’espera que tinguin en els propers anys. És un estudi que tracta ...
    • Fertigstellung und Inbetriebnahme eines Versuchstands zur Vermessung experimenteller induktiver Batterieladesysteme 

      Vidal, Humbert (Universitat Politècnica de Catalunya, 2015)
      Master thesis
      Open Access
      Covenantee:   Karlsruher Institut für Technologie
      Within the framework of inductive technology, this master’s thesis represents the conclusion of several previous projects that pursuit a common objective, to design and develop an inductive wireless power transfer system ...
    • Fluid dynamics and heat transfer in the wake of a sphere 

      Rodríguez Pérez, Ivette María; Lehmkuhl Barba, Oriol; Soria Guerrero, Manel; Gómez, Samuel; Domínguez Pumar, Manuel; Kowalski, Lukasz (2019-04)
      Article
      Open Access
      Direct numerical simulation and large-eddy simulation have been performed for a heated sphere at Reynolds numbers of $Re=1000$ and $Re=10^4$, respectively. The Prandtl number for both simulations has been $Pr=0.7$. ...
    • Grid Flexibility as pivotal instrument in the Energy Transition 

      Aragones Martinez, Victor (Universitat Politècnica de Catalunya, 2020-07-09)
      Master thesis
      Restricted access - author's decision
      Since industrial revolution started in 1750, the world GHG emissions have skyrocketed, reaching values which are dangerous for human health, as well as for the planet itself. An important share of this emissions is coming ...
    • Heat and Mass Transfer Technological Center 

      Oliva Llena, Asensio (Campus de Terrassa de la UPC, 2013-06-13)
      Conference report
      Open Access
    • Heat loss prediction of a confined premixed jet flame using a conjugate heat transfer approach 

      Gövert, S.; Mira Martínez, Daniel; Zavala-Ake, M.; Kok, J.B.W.; Vázquez, Mariano; Houzeaux, Guillaume (Elsevier, 2017-04)
      Article
      Open Access
      The presented work addresses the investigation of the heat loss of a confined turbulent jet flame in a lab-scale combustor using a conjugate-heat transfer approach and large-eddy simulation. The analysis includes the ...
    • Heat Transfer Effects on a Fully Premixed Methane Impinging Flame 

      Mira Martínez, Daniel; Zavala, Miguel; Avila, Matías; Owen, Herbert; Cajas García, Juan Carlos; Vázquez, Mariano; Houzeaux, Guillaume (Springer, 2016-01-09)
      Article
      Open Access
      A numerical assessment of different thermal conditions for an impinging flame configuration is investigated using large-eddy simulation. The cases of study correspond to a turbulent methane flame at equivalence ratio ER = ...
    • High energy vibrational excitations of nitromethane in liquid water 

      Jurado Romero, Arnau; Calero, Carles; Sibert III, Edwin L.; Rey Oriol, Rosendo (2023-05-15)
      Article
      Open Access
      The pathways and timescales of vibrational energy flow in nitromethane are investigated in both gas and condensed phases using classical molecular mechanics, with a particular focus on relaxation in liquid water. We monitor ...
    • How localized are energy dissipation processes in nanoscale interactions? 

      Santos Hernández, Sergio; Barcons Xixons, Víctor; Verdaguer, Albert; Font Teixidó, Josep; Thomson, Neil H.; Chiesa, Mateo (2011-07-29)
      Article
      Open Access
      We describe fundamental energy dissipation in dynamic nanoscale processes in terms of the localization of the interactions. In this respect, the areal density of the energy dissipated and the effective area of interaction ...
    • Impact of mobile transmitter sources on radio frequency energy harvesting 

      Hernández Coarasa, Antonio (Universitat Politècnica de Catalunya, 2012-09-05)
      Master thesis (pre-Bologna period)
      Open Access
      Covenantee:   Northeastern University
      [ANGLÈS] Wireless energy harvesting sensors networks constitute a new paradigm, where the motes deployed in the field are no longer constrained by the limited battery resource, but are able to recharge themselves through ...