Now showing items 1-20 of 69

    • A grounded-output 5-switch bipolar buck-boost converter topology for switching power amplifiers 

      García Tormo, Albert; Poveda López, Alberto; Alarcón Cot, Eduardo José; Guinjoan Gispert, Francisco (IEEE, 2011)
      Conference report
      Restricted access - publisher's policy
      This work presents a switching converter topology which can boost and step down the supply voltage and can deliver both positive and negative voltages to a grounded load (bipolar converter topology with non-floating output). ...
    • A measurement system for radiated transient electromagnetic interference based on general purpose instruments 

      Azpúrua Auyanet, Marco Aurelio; Pous Solà, Marc; Silva Martínez, Fernando (Institute of Electrical and Electronics Engineers (IEEE), 2015)
      Conference report
      Open Access
      This paper presents a measurement system intended to be used to assets the radiated electromagnetic interference (EMI) in both time and frequency domains. In order to keep the measurement setup as accessible and practical ...
    • A Modified Charge Pumping Method for Measuring Interface States Up to the Ghz Range 

      Fernández García, Raúl (2009-06-18)
      Article
      Restricted access - publisher's policy
      In this paper we present a modified on-chip charge pumping method for measuring the interface states in ultra-thin gate oxide complementary metal-oxide-semiconductor (CMOS) technology. The proposed method, which characterizes ...
    • A new switching frequency modulation scheme for EMI reduction in multiconverter topology 

      Mon González, Juan; Gago Barrio, Javier; González Díez, David; Balcells Sendra, Josep; Fernández García, Raúl; Gil Galí, Ignacio (2009)
      Conference report
      Open Access
      This paper presents a modulation scheme in order to reduce conducted Electromagnetic Interference (EMI) generated by modular power converters with parallel topology. The proposed scheme is based on a combination of ...
    • A Simple Closed-Loop Active Gate Voltage Driver for Controlling diC/dt and dvCE/dt in IGBTs 

      Ghorbani, Hamidreza; Sala Caselles, Vicenç; Paredes Camacho, Alejandro; Romeral Martínez, José Luis (2019-01-30)
      Article
      Open Access
      The increase of the switching speed in power semiconductors leads to converters with better efficiency and high power density. On the other hand, fast switching generates some consequences like overshoots and higher switching ...
    • A simple gate drive for SiC MOSFET with switching transient improvement 

      Ghorbani, Hamidreza; Sala Caselles, Vicenç; Paredes Camacho, Alejandro; Romeral Martínez, José Luis (Institute of Electrical and Electronics Engineers (IEEE), 2017)
      Conference report
      Restricted access - publisher's policy
      This paper presents a new active gate drive for SiC MOSFETs switching. The proposed driver is based on feedforward control method. The switch is benefited from a simple and effective analog gate driver (GD). The main ...
    • Active gate drivers for high-frequency application of SiC MOSFETs 

      Paredes Camacho, Alejandro (Universitat Politècnica de Catalunya, 2020-07-17)
      Doctoral thesis
      Open Access
      The trend in the development of power converters is focused on efficient systems with high power density, reliability and low cost. The challenges to cover the new power converters requirements are mainly concentered on ...
    • Alternative conducted emission measurements on mains without LISNs 

      Pous Solà, Marc; Silva Martínez, Fernando (2015-12-01)
      Article
      Open Access
      Conducted emission tests are always performed by the use of LISNs in laboratories in accordance with CISPR22, CISPR11 and other similar standards. However, it is not always possible to use LISNs because of some limitations. ...
    • An alternative characterization method of PFET sub-threshold slope under NBTI stress 

      Fernández García, Raúl; Gil Galí, Ignacio (2010)
      Conference lecture
      Open Access
      The effects of negative bias temperature instability (NBTI) on the sub-threshold performance of a pFET have been investigated by means of experimental methods. Specifically, the sub-threshold slope under static and dynamic ...
    • Analysis of radiated EMI in single switch ZVS applied to induction cooking 

      Mon González, Juan; Lamich Arocas, Manuel; Bernal Ruiz, Carlos (2019)
      Conference lecture
      Restricted access - publisher's policy
      In this paper the radiated EMI generated by a single switch ZVS inverter in the non-optimal mode operating conditions, including a current peak reduction methods are analysed. These methods consist of applying a burst pulse ...
    • Anàlisi EMI de sistemes PLC en vehicles mitjançant simulació numèrica 

      Pascual Àvila, Alba (Universitat Politècnica de Catalunya, 2012-03-22)
      Master thesis
      Open Access
      [ANGLÈS] Nowadays and since some years ago the electronic systems, in the automotive scope, are increasing both issues, comfort and safety systems. Hence studies have been made about the communication between different ...
    • APD outdoors time-domain measurements for impulsive noise characterization 

      Pous Solà, Marc; Azpúrua Auyanet, Marco Aurelio; Silva Martínez, Fernando (Institute of Electrical and Electronics Engineers (IEEE), 2017)
      Conference report
      Open Access
      A novel measurement and post-processing technique for estimating if impulsive noise is capable of degrading the performance of digital communication systems (DCS) is presented. It is based on the well-known capability of ...
    • Benefits of full time-domain EMI measurements for large fixed installation 

      Pous Solà, Marc; Azpúrua Auyanet, Marco Aurelio; Silva Martínez, Fernando (2016)
      Conference report
      Open Access
      It is difficult to properly evaluate the electromagnetic disturbances generated by large fixed installations because of, i.e., the background noise, unsteady emissions and transient interferences. Those challenging EMC ...
    • Characterization of EMI filters based on metamaterials 

      Gil Galí, Ignacio; Fernández García, Raúl; Vives, Yolanda; Jauregui Tellería, Ricardo; Silva Martínez, Fernando (2009-06)
      Conference lecture
      Open Access
      This paper analyzes the behavior of EMI filters based on metamaterials. The filters are developed by means of sub-wavelength resonators and designed to have notch-type attenuation in the 2.45 GHz band. Two types of filters ...
    • Common mode EMI model for a direct matrix converter 

      Espina Masramon, Jorge; Balcells Sendra, Josep; Arias Pujol, Antoni; Ortega García, Carlos (IEEE Press. Institute of Electrical and Electronics Engineers, 2011-11)
      Article
      Restricted access - publisher's policy
      This paper presents an electromagnetic interference (EMI) model to evaluate the conducted common mode (CM) disturbances produced by matrix converters (MCs). The model is based on obtaining a high frequency (HF) equivalent ...
    • Common mode model of matrix converter 

      Espina Masramon, Jorge; Balcells Sendra, Josep; Ortega García, Carlos; Arias Pujol, Antoni; de Lillo, Liliana; Empringham, Lee (IEEE Press. Institute of Electrical and Electronics Engineers, 2011)
      Conference report
      Restricted access - publisher's policy
      This paper deals with the validation of an EMI model to predict electromagnetic interferences (EMI) produced by direct AC/AC matrix converters (MC). The method is based on obtaining a high frequency equivalent circuit, ...
    • Contribution to conducted EMI reduction in multiconverter topology 

      Mon González, Juan; González Díez, David; Gago Barrio, Javier; Balcells Sendra, Josep; Fernández García, Raúl; Gil Galí, Ignacio (2009-11)
      Conference report
      Open Access
      This paper contributes to the conducted EMI reduction generated by switched power converters operating in multiconverter arrangement. The EMI reduction is achieved by means of the combination of two techniques: interleaving ...
    • Control of the back-end and positioning systems of the MERITXELL radiometer 

      Gómez López, José Javier (Universitat Politècnica de Catalunya, 2017-01)
      Bachelor thesis
      Open Access
      The aim of this project was the implementation of a software to position and obtain the desired measurements by a radiometer called MERITXELL. To satisfy the goals, this project was divided in three blocks (radiometer ...
    • Coupled interleaved multicellular parallel converters operated under switching frequency modulation 

      Mon González, Juan; González Díez, David; Gautier, Cirylle; Labrousse, Denis; Costa, François (2014)
      Conference report
      Restricted access - publisher's policy
      The Coupled Interleaved Multicellular Parallel (CIMP) topology is the subject of intense research because of its advantages in terms of systems integration, power density increase, low level of EMI emissions and dynamic ...
    • Desarrollo experimental para la evaluación de interferencias electromagnéticas en el laboratorio 

      Jiménez Pérez, Javier (Universitat Politècnica de Catalunya, 2014-03-13)
      Master thesis
      Open Access
      [ANGLÈS] The project tries to teach the basic aspects to bear in mind at the moment of designing hardware to minimize the problems related to electromagnetic interference. For it the knowledge acquired in Electromagnetic ...