Exploració per autor "Pou Félix, Josep"

Ara es mostren els items 70-89 de 104

    • Millora de material docent en l'àmbit de l'electrònica de potència a l'EUETIT i l'EPSEM adaptat als crèdits ECTS. 

      Jaen Fernandez, Carles; Martínez Teixidor, Inmaculada; Pano Ferrer, Olga; Pou Félix, Josep; Sala Caselles, Vicenç; Vicente Rodrigo, Jesús; Pérez, Daniel; Salvador, Antoni; Pineda, Joan Carles; Roca Lefler, Marta; Mas, Andreu; Ojalvo, Pedro; Bacardit, Roger; Planas, Montserrat (Universitat Politècnica de Catalunya. Institut de Ciències de l'Educació, 2010-02-11)
      Comunicació de congrés / Text en actes de congrés
      Accés obert
      El projecte “Millora de material docent en l'àmbit de l'electrònica de potència a l'EUETIT i l'EPSEM adaptat als crèdits ECTS” te com a finalitat la millora de la formació i rendiment acadèmic dels estudiants tenint present ...

    • Minimization of the capacitor voltage fluctuations of a modular multilevel converter by circulating current control 

      Picas Prat, Ricard; Pou Félix, Josep; Ceballos Recio, Salvador; Agelidis, Vassilios; Saeedifard, Maryam (2012)
      Text en actes de congrés
      Accés obert
      The modular multilevel converter (MMC) is one of the most potential converter topologies for medium/high power/voltage applications. One of the main technical challenges of an MMC is to eliminate/minimize the circulating ...

    • Modulation and control of three-phase PWM multilevel converters 

      Pou Félix, Josep (Universitat Politècnica de Catalunya, 2002-11-11)
      Tesi
      Accés obert
      La present tesi doctoral estudia els inversors trifàsics multinivell del tipus denominat de díodes de fixació (diode-clamped converters). Aquests convertidors poden generar tres o més nivells de tensió a cada fase de ...

    • Modulation strategy for multiphase neutral-point-clamped converters 

      López, Iraide; Ceballos Recio, Salvador; Pou Félix, Josep; Zaragoza Bertomeu, Jordi; Andreu, Jon; Kortabarria, Iñigo; Agelidis, Vassilios (2015-02-01)
      Article
      Accés obert
      This paper presents a novel modulation strategy for n-phase neutral-point-clamped (NPC) converters. The proposed modulation strategy is able to control and completely remove the low-frequency neutral-point (NP) voltage ...

    • 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)
      Article
      Accés obert
      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 ...

    • On improving phase-shifted PWM for flying capacitor multilevel converters 

      Ghias, Amer M.Y.M.; Pou Félix, Josep; Capellá Frau, Gabriel José; Acuna, Pablo; Agelidis, Vassilios (2016-08-01)
      Article
      Accés restringit per política de l'editorial
      This letter proposes a phase-shifted pulse-width modulation (PS-PWM) technique for the flying capacitor (FC) multilevel converter that improves the quality of the line-to-line voltages. In traditional PS-PWM, the line-to-line ...

    • On the use of sun trackers to improve maximum power point tracking controllers applied to photovoltaic systems 

      Jaen Fernandez, Carles; Pou Félix, Josep; Capellá Frau, Gabriel José; Arias Pujol, Antoni; Lamich Arocas, Manuel (2009)
      Text en actes de congrés
      Accés obert
      Nowadays power supply systems based on photovoltaic cells have two main drawbacks, even the primary energy is free and renewable. They are: production cost and efficiency. In order to increase their efficiency, it should ...

    • Optimal injection of harmonics in circulating currents of modular multilevel converters for capacitor voltage ripple minimization 

      Picas Prat, Ricard; Pou Félix, Josep; Ceballos Recio, Salvador; Zaragoza Bertomeu, Jordi; Konstantinou, Georgios; Agelidis, Vassilios (2013)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      This paper proposes an algorithm to calculate the optimal amplitude and phase of the harmonic current components that can be injected in the circulating currents of a modular multilevel converter (MMC) to minimize the ...

    • 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 ...

    • Parallel-connected legs in a grid-tied inverter system for distributed generation 

      Capellá Frau, Gabriel José; Pou Félix, Josep; Zaragoza Bertomeu, Jordi; Ceballos Recio, Salvador; Gabiola, Igor; Robles Sestafe, Eider (2011)
      Comunicació de congrés
      Accés obert
      Grid-connected high-power inverters are often used in distributed generation and power quality systems. Those inverters have to handle high currents in order to achieve high power values without resorting to higher ...

    • Performance evaluation of a five-level flying capacitor converter with reduced DC bus capacitance under two different modulation schemes 

      Ghias, Amer M.Y.M.; Pou Félix, Josep; Ciobotaru, M.; Agelidis, Vassilios (2012)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      In flying capacitor (FC) converters, phase-shifted pulse-width modulation (PS-PWM) provides natural voltage balancing. However, for a practical application, a more robust balancing mechanism of maintaining the FC voltages ...

    • Performance evaluation of three-phase grid-connected photovoltaic inverters using electrolytic or polypropylene film capacitors 

      Karanayil, Baburaj; Agelidis, Vassilios; Pou Félix, Josep (2014-10-01)
      Article
      Accés restringit per política de l'editorial
      In grid-connected photovoltaic (PV) power stations, improving the life expectancy and long-term reliability of three-phase PV inverters is urgently needed to match the significantly higher lifetime of the PV modules. A key ...

    • Planta mixta eòlica-fotovoltaica i elaboració de material docent en matèries d'energies renovables 

      Pou Félix, Josep (Universitat Politècnica de Catalunya. Institut de Ciències de l'Educació, 2012-02-07)
      Text en actes de congrés / Comunicació de congrés
      Accés obert

    • 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 ...

    • 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 ...

    • Recent advances and industrial applications of multilevel converters 

      Leon, José I.; Kouro, Samir; Malinowski, Mariusz; Gopakumar, K.; Pou Félix, Josep; Franquelo, L. G.; Wu, Bin; Rodríguez, José; Pérez, Marcelo A. (IEEE Press. Institute of Electrical and Electronics Engineers, 2010-08)
      Article
      Accés restringit per política de l'editorial
      Multilevel converters have been under research and development for more than three decades and have found successful industrial application. However, this is still a technology under development, and many new contributions ...

    • Reducing circulating currents in interleaved converter legs under selective harmonic elimination pulse-width modulation 

      Konstantinou, Georgios; Pou Félix, Josep; Capellá Frau, Gabriel José; Ceballos Recio, Salvador; Agelidis, Vassilios (2015)
      Text en actes de congrés
      Accés obert
      Interleaving of voltage source converter legs enables higher output currents per phase, effectively increasing the power rating without increasing semiconductor ratings. Different switching patterns between the converter ...

    • Reliable modular multilevel converter fault detection with redundant voltage sensor 

      Picas Prat, Ricard; Zaragoza Bertomeu, Jordi; Pou Félix, Josep; Ceballos Recio, Salvador (2016-02-08)
      Article
      Accés obert
      This paper presents a fault-tolerant configuration for the modular multilevel converter (MMC). The procedure is able to detect faults in voltage sensors and semiconductor switching devices, and it can reconfigure the system ...

    • SiC modular multilevel converters: sub-module voltage ripple analysis and efficiency estimations 

      Perez Basante, Angel; Pou Félix, Josep; Ceballos Recio, Salvador; Gil De Muro, Asier; Pujana, Ainhoa; Ibañez, Pedro (2014)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Two important technical challenges associated with the Modular Multilevel Converter (MMC) are the reduction of the voltage ripple of the Sub-Module (SM) capacitors and the reduction of the converter losses. This paper ...

    • Single-carrier phase-disposition PWM implementation for multilevel flying capacitor converters 

      Ghias, Amer M.Y.M.; Pou Félix, Josep; Capellá Frau, Gabriel José; Agelidis, Vassilios; Aguilera, Ricardo P; Meynard, Thierry A. (2015-10-01)
      Article
      Accés obert
      This letter proposes a new implementation of phase-disposition pulse-width modulation (PD-PWM) for multilevel flying capacitor (FC) converters using a single triangular carrier. The proposed implementation is much simpler ...