Exploració per tema "Electromagnetisme"

Ara es mostren els items 41-60 de 204

    • Caracterización electromagnética de materiales RAM mediante medidas en espacio libre 

      Blanch Boris, Sebastián; Cardama Aznar, Ángel; Jofre Roca, Lluís (1991)
      Text en actes de congrés
      Accés obert
      A free-space measurement system in the 2-JBGHz frequency range is used to measure the reflection and transmission coefficients of planar samples. The complex electric permittivity and the magnetic permeability are calculated ...

    • Carregador inalàmbric per inducció 

      Aran Rayés, Gerard; Clar López, Francesc; Giró García, Adrià (Universitat Politècnica de Catalunya, 2011-01-12)
      Projecte/Treball Final de Carrera
      Accés obert
      En els darrers anys, la nostra societat ha experimentat una revolució en el nombre de dispositius electrònics. Això ens provoca un problema de comoditat alhora de manipular-los. Per reduir aquest problema proposem un ...

    • Cálculo de radiación en 3 dimensiones mediante el método de los elementos de contorno 

      Duffo Ubeda, Núria; Rius Casals, Juan Manuel; Cardama Aznar, Ángel (1992)
      Text en actes de congrés
      Accés obert
      In order to analize the electromagnetic fields generated by perfectly conducting bodies whichever it is its geometry, the Boundary Element Method is applied. The basic formulation and associated items (integral equations ...

    • Cálculos electromagnéticos en 3 dimensiones mediante el método de los elementos de contorno 

      Cruellas Ibarz, Juan Carlos; Ferrando Bataller, Miquel (1990)
      Text en actes de congrés
      Accés obert
      The Boundary Element Method is applied to solve 3 D electromagnetic problems. The basic formulation and associated items (integral equation to solve, surface discretization, fields interpolation and numerical integration) ...

    • Circuital analysis of a two-port angular sector 

      Ferrando Bataller, Miquel (Institute of Electrical and Electronics Engineers (IEEE), 1999)
      Text en actes de congrés
      Accés obert
      The authors introduce an element that allows them to analyze two-dimensional diffraction problems in a circuital way. The circuital analysis of electromagnetic problems, together to the segmentation technique, allows one ...

    • Coatings for decarburization prevention and the influence of electromagnetic field on carbón diffusion in iron 

      Hu, Jiawei (Universitat Politècnica de Catalunya, 2019-03-05)
      Treball Final de Grau
      Accés obert
      Realitzat a/amb:   Institut national des sciences appliquées de Lyon
      The purpose of this project is to study the influence of a combination of electric and magnetic field on the diffusion process of carbon atoms in iron. The experiment is carried out by putting a 26 x 9 mm two-dimensional, ...

    • La Compatibilidad electromagnética, un problema en la sociedad actual 

      Pallàs-Areny, Ramon; Silva, Ferran (Escola Tècnica Superior d'Enginyers de Telecomunicació de Barcelona, 1999)
      Article
      Accés obert

    • Conductive polyaniline-coated poly(p-phenylenetere phthamide) yarn-reinforced multiaxial composites for electromagnetic shielding 

      Hong, Jianhan; Hu, Chengye; Jin, Lihua; Han, Xiao; Yao, Juming; Gil Galí, Ignacio (2019-10-21)
      Article
      Accés obert
      Poly(p-phenylenetere phthamide) fiber is a high-performance synthetic fiber whose reinforced composites are widely used for their advantages of high strength and lightweight. However, the further potential usage of ...

    • Contribución a técnicas de modelado y reducción de EMI en sistemas multiconvertidor 

      Mon González, Juan (Universitat Politècnica de Catalunya, 2012-11-05)
      Tesi
      Accés obert
      This Thesis has been developed in the research group TIEG (Terrassa Industrial Electronics Group). It is focused on the reduction of conducted electromagnetic interferences (EMI) generated by switched power converters. ...

    • Current-balancing technique for interleaved voltage source inverters with magnetically coupled legs connected in parallel 

      Capellá Frau, Gabriel José; Pou Félix, Josep; Ceballos Recio, Salvador; Zaragoza Bertomeu, Jordi; Agelidis, Vassilios (Institute of Electrical and Electronics Engineers (IEEE), 2015-03-01)
      Article
      Accés obert
      Connecting legs in parallel in a voltage source inverter is a way to increase the output current and, thus, its rated power. The connection can be made using either coupled or uncoupled inductors, and achieving an even ...

    • Demonstration of electromagnetic formation flight and wireless power transfer 

      Porter, Allison K; Allinger, Dustin J; Sedwick, Raymond; Merk, John; Opperman, Roedolph A.; Buck, Alexander; Eslinger, Gregory; Fisher, Peter; Miller, David W; Bou Balust, Elisenda (2014-11-01)
      Article
      Accés restringit per política de l'editorial
      The Resonant Inductive Near-Field Generation System uses a single set of hardware to perform both electromagnetic formation flight and wireless power transfer operations in a six-degree-of-freedom microgravity environment. ...

    • Desarrollo de un modelo de funcionamiento de electrolizadores alcalinos autopresurizados, para la optimización de su sistema de control 

      Fabrega, Eric (Universitat Politècnica de Catalunya, 2020-09-16)
      Projecte Final de Màster Oficial
      Accés obert
      Realitzat a/amb:   Instituto Tecnológico de Buenos Aires
      En el marco de colaboración con el equipo de investigación del Laboratorio de Hidrógeno del Instituto Tecnológico de Buenos Aires (ITBA), en el presente trabajo se desarrolla un modelo matemático de la eficiencia de ...

    • Design and construction of a 3D Helmholtz coil system for the ALBA magnetic measurements laboratory 

      Fontanet Valls, Andrea del Carme (Universitat Politècnica de Catalunya, 2019-06)
      Treball Final de Grau
      Accés obert
      Realitzat a/amb:   Sincrotró ALBA
      3D Hall probes designed and produced by ALBA Synchrotron are currently being used at ALBA magnetic measurements laboratory to carry out accurate magnetic characterization of magnets and insertion devices. In order to ...

    • Design of woven meta-materials for electronic textiles for functional applications 

      Zribi, Hanen; Hadj Taieb, Amine; Gil Galí, Ignacio; Fernández García, Raúl; Ardanuy Raso, Mònica (2023)
      Article
      Accés obert
      In this paper, woven wearable metamaterials are developed. For this purpose, several frequency selective surface (FSS) textile absorbers are proposed. The main structure of the FSS consists of a fabric with different patch ...

    • Detection of partial demagnetization fault in PMSMs operating under nonstationary conditions 

      Wang, Chao; Delgado Prieto, Miquel; Romeral Martínez, José Luis; Chen, Zhe; Blaabjerg, Frede; Liu, Xiaoyan (2016-07-01)
      Article
      Accés obert
      Demagnetization fault detection of in-service permanent magnet synchronous machines (PMSMs) is a challenging task, because most PMSMs operate under nonstationary circumstances in industrial applications. A novel approach ...

    • Una Década de teledetección en el Grupo de Ingeniería Electromagnética y Fotónica 

      Camps Carmona, Adriano José; Vall-Llossera Ferran, Mercedes Magdalena; Mallorquí Franquet, Jordi Joan; Rocadenbosch Burillo, Francisco (Escola Tècnica Superior d'Enginyers de Telecomunicació de Barcelona, 2003)
      Article
      Accés obert

    • DG-JMCFIE-EFIE formulation for multi-material complex radiation problems 

      Martín, Víctor F.; Larios, David; Taboada, Jose M.; Landesa, Luis; Obelleiro, Fernando (Universitat Politècnica de Catalunya. Remote Sensing, Antennas, Microwaves and Superconductivity Group (CommSensLab), 2022)
      Text en actes de congrés
      Accés obert
      The versatility of the Discontinuous Galerkin (DG) method [1, 2] to accurately deal with non-conformal meshes makes it a well-suited approach to address complex, multi-scale problems, greatly simplifying computer-aideddesign ...

    • Differential and common-mode filters based on metamaterial resonators 

      Gil Galí, Ignacio; Fernández García, Raúl (2013)
      Comunicació de congrés
      Accés obert
      Two different techniques based on metamaterials for mitigating both the differential and common-mode propagation in differential signaling are addressed. The proposed filters are implemented by means of complementary ...

    • Diseño de instrumental científico destinado a la caracterización y estructura de nucleo-proteinas y polímeros en general 

      Lloveras Macià, Joaquín (UPC, 1975)
      Report de recerca
      Accés obert
      Memòria resum dels treballs d'investigació realitzats a la Cátedra de Tecnología Química Especial de l'ETSIIB de la UPB durant el gaudi d'una beca de formació del personal investigador (1972-1975). Inclou un resum de la ...

    • Diseño de un Motor Síncrono con desplazamiento lineal 

      Romero Velasquez, Juan David (Universitat Politècnica de Catalunya, 2020-02-06)
      Treball Final de Grau
      Accés obert
      En este trabajo se ha realizado un diseño de un motor síncrono lineal de imanes permanentes. Se empieza explicando brevemente las diferentes tipologías de motores lineales. Se hace un primer dimensionamiento para poder ...