Exploració per autor "Pou Félix, Josep"
Ara es mostren els items 75-94 de 104
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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'editorialThis 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 obertNowadays 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'editorialThis 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 obertThis 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 obertGrid-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'editorialIn 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'editorialIn 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 obertThis 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'editorialThis 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'editorialMultilevel 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 obertInterleaving 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 obertThis 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'editorialTwo 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 obertThis 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 ... -
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 obertIn 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 ... -
Solid State Transformer Based on the Flying Capacitor Multilevel Converter for Intelligent Power Management
Ghias, Amer M.Y.M.; Ciobotaru, M.; Agelidis, Vassilios; Pou Félix, Josep (IEEEXPLORE, 2012)
Text en actes de congrés
Accés restringit per política de l'editorialFuture grids will consist of large scale of integration of both renewable and other distributed energy sources. Therefore, advanced power electronics converters for critical loads will be needed in order to enhance power ... -
Study and comparison of discontinuous modulation for modular multilevel converters in motor drive applications
Picas Prat, Ricard; Zaragoza Bertomeu, Jordi; Pou Félix, Josep; Ceballos Recio, Salvador; Konstantinou, Georgios; Capellá Frau, Gabriel José (Institute of Electrical and Electronics Engineers (IEEE), 2019-01-01)
Article
Accés obertDiscontinuous modulation applied to modular multilevel converters is an effective method for reducing the capacitor voltage ripples. In this paper, the discontinuous modulation is adapted and used in a motor drive application. ... -
Study and experimental verification of control tuning strategies in a variable speed wind energy conversion system
Zaragoza Bertomeu, Jordi; Pou Félix, Josep; Arias Pujol, Antoni; Spiteri, Cyril; Robles Sestafe, Eider; Ceballos Recio, Salvador (2011-05)
Article
Accés restringit per política de l'editorialThis paper analyzes and compares different control tuning strategies for a variable speed wind energy conversion system (WECS) based on a permanent-magnet synchronous generator (PMSG). The aerodynamics of the wind turbine ... -
Survey on fault operation on multilevel inverters
Lezana, Pablo; Pou Félix, Josep; Meynard, Thierry A.; Rodríguez, José; Ceballos Recio, Salvador; Richardeau, Frédéric (2010-07-01)
Article
Accés obertThis paper is related to faults that can appear in multilevel (ML) inverters, which have a high number of components. This is a subject of increasing importance in high-power inverters. First, methods to identify a fault ...