Ponències/Comunicacions de congressos: Enviaments recents

Ara es mostren els items 25-36 de 123

    • Operators to calculate the derivative of digital signals 

      Ferrer Arnau, Luis Jorge; Mon González, Juan; Parisi Baradad, Vicenç (2013)
      Comunicació de congrés
      Accés obert
      This paper presents an FIR operator with a very low computational cost for calculating the first derivative of discrete band-limited signals. The basic idea is to use cubic spline polynomials for interpolating among the ...

    • Decimator filter based on B-splines 

      Ferrer Arnau, Luis Jorge; Roset Juan, Francesc Xavier; Mon González, Juan; Parisi Baradad, Vicenç (2013)
      Text en actes de congrés
      Accés obert
      The cascaded integrator-comb (CIC) filters are widely used as decimators in many applications, such as in delta sigma AD converters to decimate the sampled signal on its output. One problem with these filters is that by ...

    • A new method to improve the total efficiency of parallel converters 

      Hoff Dupont, Fabrício; Zaragoza Bertomeu, Jordi; Rech, Cassiano; Pinheiro, José Renes (2013)
      Text en actes de congrés
      Accés obert
      This paper proposes a new methodology for efficiency optimization in systems composed by parallel converters. The proposed methodology takes into account the individual efficiency curves and determines the optimum ...

    • A simple control strategy to increase the total efficiency of multi-converter systems 

      Hoff Dupont, Fabrício; Zaragoza Bertomeu, Jordi; Rech, Cassiano; Pinheiro, José Renes (2013)
      Text en actes de congrés
      Accés obert
      This paper presents a simple control strategy that is employed together with an optimization methodology to achieve optimal efficiency in systems composed by multiple parallel converters. An external loop is responsible ...

    • Analysis of a voltage balancing technique with reduced switching transitions in a flying capacitor multilevel converter 

      Ghias, Amer M.Y.M.; Pou Félix, Josep; Agelidis, Vassilios; Ciobotaru, M. (2013)
      Text en actes de congrés
      Accés obert
      This paper reports the analysis of a voltage balancing technique based on optimal switching transitions for a flying capacitor (FC) multilevel converter using phase disposition pulse-width modulation. Since multiple switching ...

    • Positive- and negative-sequence control of grid-connected photovoltaic systems under unbalanced voltage conditions 

      Mirhosseini, Mitra; Pou Félix, Josep; Karanayil, Baburaj; Agelidis, Vassilios (2013)
      Text en actes de congrés
      Accés obert
      This paper discusses the control of the positive- and negative-sequence components of a large-scale grid-connected photovoltaic system (GCPS) under unbalanced voltage sag conditions in the grid. Some issues regarding ...

    • Characterization of conducted emission at high frequency under different temperature 

      Berbel Artal, Néstor; Fernández García, Raúl; Gil Galí, Ignacio (2013)
      Comunicació de congrés
      Accés restringit per política de l'editorial
      Download Citation Email Print Request Permissions Save to Project In this paper, the characterization of the EMC conducted emissions of integrated circuits under different temperature stress condition, ...

    • PWM algorithm with adaptive offset for three-level multi-phase neutral-point-clamped converters 

      López, Iraide; Ceballos Recio, Salvador; Andreu, Jon; Kortabarria, Iñigo; Pou Félix, Josep (2013)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      This paper proposes a PWM based modulation strategy particularly useful for three-level multi-phase Neutral-Point-Clamped Converters. It achieves similar results to those obtained with the space vector modulation but ...

    • Interleaved selective harmonic elimination PWM for single-phase rectifiers in traction applications 

      Konstantinou, Georgios; Agelidis, Vassilios; Pou Félix, Josep (2013)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Interleaved four-quadrant, single-phase rectifiers are widely used in traction applications as part of an AC-DC-AC conversion system. This paper presents selective harmonic elimination pulse-width modulation (SHE-PWM) ...

    • Single-stage inverter-based grid-connected photovoltaic system with ride-through capability over different types of grid faults 

      Mirhosseini, Mitra; Pou Félix, Josep; Agelidis, Vassilios (2013)
      Text en actes de congrés
      Accés obert
      In this paper the control of a single-stage grid-connected photovoltaic power plant (GCPPP) is developed to address the issue of inverter disconnection under various grid faults. There are three main reasons for inverter ...

    • Voltage balancing method for a seven-level stacked multicell converter using minimum-switching transitions 

      Ghias, Amer M.Y.M.; Pou Félix, Josep; Agelidis, Vassilios; Ciobotaru, Mihai (2013)
      Text en actes de congrés
      Accés obert
      This paper presents a voltage balancing method for stacked multicell converters based on phase disposition pulse-width modulation. This method is based on minimizing a cost function to determine the optimum redundant state ...

    • Optimum state voltage balancing method for stacked multicell converters 

      Ghias, Amer M.Y.M.; Pou Félix, Josep; Agelidis, Vassilios; Ciobotaru, Mihai (2013)
      Text en actes de congrés
      Accés obert
      This paper presents a voltage balancing method for stacked multicell converters based on phase disposition pulse-width modulation. This method is based on minimizing a cost function to determine the optimum redundant state ...