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Ara es mostren els items 34-53 de 54

    • Lead current reduction in a three phase four wires Shunt Hybrid Filter 

      Lamich Arocas, Manuel; Balcells Sendra, Josep; Castillo Martínez, Jose Luis; Pérez Robles, Daniel (2009)
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    • Minimization of Leading Current in a Three Phase Four Wires Shunt Hybrid Filter 

      Lamich Arocas, Manuel; Balcells Sendra, Josep; Gago Barrio, Javier; González Díez, David; Jaen Fernandez, Carles; Castillo Martínez, Jose Luis (2009)
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      The main drawback of Shunt Hybrid Filters is the need of leading current injection. This paper describes a strategy to reduce the leading current in a three phase four wires LC coupled parallel hybrid filter for harmonics ...

    • Modeling harmonics of networks supplying nonlinear loads 

      Lamich Arocas, Manuel; Balcells Sendra, Josep; Corbalán Fuertes, Montserrat; Sainz Sapera, Luis; Fernandez, Cristian (2014)
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      This work presents the development and validation of a model for electric networks supplying nonlinear loads (NLL). The model is based on Neural Networks (NN) and its purpose is the prediction of harmonic currents sank by ...

    • Modelling harmonics drawn by nonlinear loads 

      Lamich Arocas, Manuel; Balcells Sendra, Josep; Mon González, Juan; Corbalán Fuertes, Montserrat; Griful Ponsati, Eulàlia (Institute of Electrical and Electronics Engineers (IEEE), 2015)
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      This paper is devoted to obtain a model of nonlinear loads (NLL) connected to LV electric networks, in order to predict the consequences of including parallel active or passive filters. The model is based on Neural ...

    • Modulation technique to reduce EMI in power multiconverters 

      Mon González, Juan; Gago Barrio, Javier; González Díez, David; Balcells Sendra, Josep; Fernández García, Raúl; Bogónez Franco, Francisco; Gil Galí, Ignacio (2009-04-05)
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      A new technique to reduce EMI in modular power multiconverters is described. The technique is based on a combination of switching frequency modulation and a variable delay between communication signals of the single ...

    • Multiband EMI filter based on metamaterials 

      Gil Galí, Ignacio; Fernández García, Raúl; Gago Barrio, Javier; Balcells Sendra, Josep (2010-05-10)
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      A novel compact multiband microstrip EMI filter based on metamaterials is presented. The filter is implemented by means of split-rings resonators and complementary spiral sub-wavelength resonators, conveniently coupled to ...

    • New measuring technique for reducing the number of voltage sensors in modular multilevel converters 

      Picas Prat, Ricard; Zaragoza Bertomeu, Jordi; Pou Félix, Josep; Ceballos Recio, Salvador; Balcells Sendra, Josep (2016-01-01)
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      This paper presents a new technique for measuring the capacitor voltages in a modular multilevel converter using a reduced number of voltage sensors. With this technique, the minimum number of voltage sensors per arm is ...

    • Nonlinear loads model for harmonics flow prediction, using multivariate regression 

      Lamich Arocas, Manuel; Balcells Sendra, Josep; Corbalán Fuertes, Montserrat; Griful Ponsati, Eulàlia (Institute of Electrical and Electronics Engineers (IEEE), 2017-06)
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      This paper describes a method for obtaining a model of a single or a set of nonlinear loads (NLL) connected to a certain point of an electrical network. The basic assumption is that the network supplying the NLL has ...

    • On electric vehicle battery charger modeling 

      Sainz Sapera, Luis; Mesas García, Juan José; Balcells Sendra, Josep (2011)
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      The increase of electric vehicle (EV) battery chargers connected to electric networks could lead to future harmonic problems in power systems. These loads are nonlinear devices that inject harmonic currents and pollute ...

    • Reduction of electromagnetic interference susceptibility in small-signal analog circuits using complementary split-ring resonators 

      Pérez Robles, Daniel; Gil Galí, Ignacio; Gago Barrio, Javier; Fernández García, Raúl; Balcells Sendra, Josep; González Díez, David; Berbel Artal, Néstor; Mon González, Juan (IEEE, 2012-02-10)
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      Low-frequency analog and digital electronic circuits are susceptible to electromagnetic interference in the radiofrequency (RF) range. This disturbance is produced when the coupled RF signal is rectified by the nonlinear ...

    • Reduction of EMI by Combining Interleaving and Modulation Techniques in Multiconverter Topology 

      Mon González, Juan; Gago Barrio, Javier; González Díez, David; Balcells Sendra, Josep; Fernández García, Raúl; Gil Galí, Ignacio (2009)
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      In this paper an evaluation of different modulations techniques that combine switching frequency modulation and interleaving is presented. The objective of these modulations is to cancel certain harmonics of EMI and to ...

    • Reduction of output common mode voltage using a novel SVM implementation in matrix converters for improved motor lifetime 

      Espina, Jordi; Ortega, Carlos; De Lilo, Liliana; Empringham, Lee; Balcells Sendra, Josep; Arias Pujol, Antoni (Institute of Electrical and Electronics Engineers (IEEE), 2014)
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      This paper presents the study of an alternative Space Vector Modulation (SVM) implementation for Matrix Converters (MC) which reduces the output Common Mode (CM) voltage. The strategy is based on replacing the MC zero ...

    • Review of anti-windup strategies for PI speed controllers in field oriented control of permanent magnet synchronous machines 

      Espina Masramon, Jorge; Arias Pujol, Antoni; Balcells Sendra, Josep; Ortega García, Carlos (2010-10)
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      The work presented in this paper addresses the unwanted windup phenomenon reviewing and comparing different PI anti-windup strategies employed in speed control of electric drives. The tuning process of PI controllers is ...

    • Speed anti-windup PI strategies review field oriented control of permanent magnet synchronous machines 

      Espina Masramon, Jorge; Arias Pujol, Antoni; Balcells Sendra, Josep; Ortega García, Carlos (IEEE Press. Institute of Electrical and Electronics Engineers, 2009)
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      The work presented in this paper addresses the unwanted windup phenomenon reviewing and comparing different PI anti-windup strategies employed in speed control of electric drives. The tuning process of PI controllers is ...

    • Speed anti-windup PI strategies review for field oriented control of permanent magnet synchronous machines servo drives with matrix converters 

      Espina Masramon, Jorge; Arias Pujol, Antoni; Balcells Sendra, Josep; Ortega García, Carlos; Galceran Arellano, Samuel (2009)
      Comunicació de congrés
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      When facing real systems PI tuning, the plant is modeled disregarding its physical limitations. Consequently, the PI output may increase indefinitely its value; phenomenon called Windup. This paper presents a review and a ...

    • SVC model for voltage control of a microgrid 

      Bogónez Franco, Francisco; Balcells Sendra, Josep; Junyent, Oriol; Jordà, Josep (2011)
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      Low power renewable sources, connected to low voltage micro-grids, are becoming more and more common. Since there is a high degree of uncertainty on the availability of such sources, this causes problems of stability and ...

    • Técnicas de reducción EMI en sistemas multiconvertidor con conexión en paralelo 

      Mon González, Juan; Gago Barrio, Javier; González Díez, David; Balcells Sendra, Josep (Universitat Politècnica de Catalunya. Departament d'Enginyeria Electrònica (EEL), 2009)
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      En el presente artículo se analizan diferentes técnicas para la reducción de las EMI generadas por sistemas multiconvertidor con conexión en paralelo. La reducción de las perturbaciones generadas se logra por medio de la ...

    • TIEG: basic information of the research group 

      Balcells Sendra, Josep; Fernández García, Raúl (Campus de Terrassa de la UPC, 2013-06-13)
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      This paper presents a summary of the main activities of research group TIEG (Terrassa Industrial Electronics Group). The group objectives are basically focused on four main areas, i.e. Electromagnetic Compatibility (EMC) ...

    • Training kit for power electronics teaching 

      Pérez Robles, Daniel; Balcells Sendra, Josep; Lamich Arocas, Manuel; Berbel Artal, Néstor; Zaragoza Bertomeu, Jordi; Mon González, Juan (Institute of Electrical and Electronics Engineers (IEEE), 2008)
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    • Validation of EMI model for matrix converters 

      Espina Masramon, Jorge; Balcells Sendra, Josep; Arias Pujol, Antoni; Ortega García, Carlos; González Díez, David; Gago Barrio, Javier (IEEEXPLORE, 2012)
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      This paper is focused on the validation of a previously presented method to obtain conducted EMI in direct matrix converters (MC). Such model is based on a frequency domain equivalent circuit, which is applied to two ...