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1 to 16 of 16 results
  • Analysis of the fault-tolerance capacity of the multilevel active-clamped converter

     Nicolás Apruzzese, Joan; Busquets Monge, Sergio; Bordonau Farrerons, Jose; Alepuz Menendez, Salvador; Calle Prado, Alejandro
    IEEE transactions on industrial electronics
    Date of publication: 2013
    Journal article

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    Thanks to the inherent redundancy to generate the different output voltage levels, the multilevel active-clamped (MAC) topology presents an important fault-tolerance ability which makes it interesting for several applications. This paper presents an analysis of the fault-tolerance capacity of the MAC converter. Both open-circuit and short-circuit faults are considered, and the analysis is carried out under single-device and two simultaneous device faults. Switching strategies and different hardware modifications to overcome the limitations caused by faults are proposed. Experimental tests with a four-level MAC prototype are presented to validate the analysis.

    Thanks to the inherent redundancy to generate the different output voltage levels, the multilevel active-clamped (MAC) topology presents an important fault-tolerance ability which makes it interesting for several applications. This paper presents an analysis of the fault-tolerance capacity of the MAC converter. Both open-circuit and short-circuit faults are considered, and the analysis is carried out under single-device and two simultaneous device faults. Switching strategies and different hardware modifications to overcome the limitations caused by faults are proposed. Experimental tests with a four-level MAC prototype are presented to validate the analysis.

  • Experimental efficiency comparison between a four-level active-clamped and a two-level topology

     Nicolás Apruzzese, Joan; Busquets Monge, Sergio; Bordonau Farrerons, Jose; Alepuz Menendez, Salvador; Calle Prado, Alejandro; Filbà Martínez, Àlber
    Annual Conference of the IEEE Industrial Electronics Society
    Presentation's date: 2013-11-11
    Presentation of work at congresses

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    This paper presents an efficiency analysis of a recently-published topology, the multilevel-active-clamped (MAC) topology. In order to assess the MAC topology, an efficiency comparison between a four-level MAC leg and a conventional two-level leg operating in low voltage is carried out. First, overall losses of both topologies are estimated. Then, experimental tests to measure their overall losses and their efficiency are presented. Finally, obtained results from the experimental tests are compared with the estimations to substantiate the analysis. The efficiency of the MAC topology is higher in all the switching-frequency range.

  • Predictive current control of a back-to-back NPC wind energy conversion system to meet low voltage ride-through requirements

     Alepuz Menendez, Salvador; Calle Prado, Alejandro; Busquets Monge, Sergio; Nicolás Apruzzese, Joan; Bordonau Farrerons, Jose
    Annual Conference of the IEEE Industrial Electronics Society
    Presentation's date: 2013-11-13
    Presentation of work at congresses

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    Predictive current control is applied to a wind energy conversion system implemented with a permanent-magnet synchronous generator connected to the grid through a back-toback neutral-point-clamped converter. This control approach allows to work in steady-state and to fulfill the low-voltage ride through requirements demanded by the power system operators. Dc-link neutral point voltage balance is also achieved by means of the predictive control algorithm.

  • Design and Analysis of a Novel Multilevel Active-Clamped Power-Converter

     Nicolás Apruzzese, Joan
    Defense's date: 2013-09-16
    Department of Electronic Engineering, Universitat Politècnica de Catalunya
    Theses

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  • Design issues of the multilevel active-clamped converter

     Nicolás Apruzzese, Joan; Busquets Monge, Sergio; Bordonau Farrerons, Jose
    Annual Conference of the IEEE Industrial Electronics Society
    Presentation's date: 2011-11-08
    Presentation of work at congresses

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    This paper studies several design issues of the multilevel active-clamped (MAC) topology. Several guidelines are proposed to guarantee a proper MAC converter design and improve its performance. The inclusion of a resistor network to balance the blocking voltage of devices when the converter is in OFF state, the use of self-powered gate-driver power-supplies, or the definition of a shut-down sequence to avoid possible device failures are some of the proposals. This paper also studies the singular device current spikes that appear in the MAC topology during switching state transitions. These spikes occur owing to diode reverse recovery and to the discharging of the device output parasitic capacitances. A proper device selection reduces these current peaks, decreasing the switching losses and the converter electromagnetic interference. Experimental tests are carried out with a four-level MAC prototype to validate the analysis.

  • Fault-tolerance capacity of the multilevel active-clamped topology

     Nicolás Apruzzese, Joan; Busquets Monge, Sergio; Bordonau Farrerons, Jose; Alepuz Menendez, Salvador; Calle Prado, Alejandro
    IEEE Energy Conversion Congress and Exposition
    Presentation's date: 2011-09-22
    Presentation of work at congresses

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    Thanks to the inherent redundancy to generate the different output voltage levels, the multilevel active clamped (MAC) topology presents an important fault-tolerance ability which makes it interesting for several applications. This paper presents an analysis of the fault-tolerance capacity of the MAC converter. Both open-circuit and short-circuit faults are considered and the analysis is carried out under single-device and two-simultaneous-device faults. Switching strategies to overcome the limitations caused by faults are proposed. Experimental tests with a four-level MAC prototype are presented to validate the analysis.

  • Fault-tolerance capacity of the multilevel active clamped topology

     Nicolás Apruzzese, Joan; Busquets Monge, Sergio; Bordonau Farrerons, Jose; Alepuz Menendez, Salvador; Calle Prado, Alejandro
    IEEE Energy Conversion Congress and Exposition
    Presentation's date: 2011
    Presentation of work at congresses

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    Thanks to the inherent redundancy to generate the different output voltage levels, the multilevel active clamped (MAC) topology presents an important fault-tolerance ability which makes it interesting for several applications. This paper presents an analysis of the fault-tolerance capacity of the MAC converter. Both open-circuit and short-circuit faults are considered and the analysis is carried out under single-device and two-simultaneous-device faults. Switching strategies to overcome the limitations caused by faults are proposed. Experimental tests with a four-level MAC prototype are presented to validate the analysis.

  • A multilevel active-clamped converter topology¿Operating principle

     Busquets Monge, Sergio; Nicolás Apruzzese, Joan
    IEEE transactions on industrial electronics
    Date of publication: 2011-09
    Journal article

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    This paper presents a novel multilevel activeclamped converter topology, which is an extension to m levels of the three-level active neutral-point-clamped topology. The operating principle is established through the definition of a proper set of switching states and a transition strategy between adjacent switching states. The benefits of the proposed converter topology and control in comparison to alternative multilevel converter topologies are discussed. The simulation and experimental results of a simple four-level dc–dc converter configuration are presented to illustrate the converter performance features. The experimental results of a four-level three-phase dc–ac converter are also presented to further validate the proposed topology and operating principle.

  • Técnicas avanzadas de convertidores electrónicos de potencia multinivel de ca aplicadas al uso racional de la energía eléctrica

     Alepuz Menendez, Salvador; Busquets Monge, Sergio; Calle Prado, Alejandro; Nicolás Apruzzese, Joan; Peracaula Roura, Joan; Bordonau Farrerons, Jose
    Participation in a competitive project

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  • An m-level active-clamped converter topology - Operating principle

     Busquets Monge, Sergio; Nicolás Apruzzese, Joan
    IEEE International Symposium on Industrial Electronics
    Presentation's date: 2010-07-07
    Presentation of work at congresses

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    A novel pulsewidth modulation to operate a bidirectional two-stage dc-ac converter with high-frequency isolation in discontinuous conduction mode for photovoltaic applications  Open access

     Mata Dumenjó, Montserrat; Busquets Monge, Sergio; Diest, Jaume; Rocabert Delgado, Joan; Barenys, Mireia; Nicolás Apruzzese, Joan; Salaet Pereira, Juan Fernando
    European Conference on Power Electronics and Applications
    Presentation's date: 2009-09
    Presentation of work at congresses

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    This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder

    Postprint (author’s final draft)

  • Advanced Wide Band Gap Semiconductor Devices for Rational Use of Energy (RUE)

     Alepuz Menendez, Salvador; Busquets Monge, Sergio; Calle Prado, Alejandro; Nicolás Apruzzese, Joan; Peracaula Roura, Joan; Filbà Martínez, Àlber; Bordonau Farrerons, Jose
    Participation in a competitive project

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  • DISEÑO E IMPLEMENTACIÓN DE NANOREDES PARA APLICACIONES DOMÉSTICAS, COMERCIALES..

     Alepuz Menendez, Salvador; Busquets Monge, Sergio; Calle Prado, Alejandro; Nicolás Apruzzese, Joan; Bordonau Farrerons, Jose
    Participation in a competitive project

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    2 transistors + 2 diodes-based PEBB designed for general applications in power electronics  Open access

     Nicolás Apruzzese, Joan; Rocabert Delgado, Joan; Bordonau Farrerons, Jose; Busquets Monge, Sergio; Alepuz Menendez, Salvador; Martinez Velasco, Juan Antonio; Peracaula Roura, Joan
    European Conference on Power Electronics and Applications
    Presentation's date: 2009-09
    Presentation of work at congresses

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    This paper presents a new Power Electronic Building Block (PEBB) designed to facilitate the implementation of different power converter topologies. The proposed PEBB consists of two diodes and two transistors and it can be used to implement the most relevant power converter topologies, due to its modularity. The addition of the two diodes is an exclusive feature of the new PEBB, which permits to implement neutral point clamped (NPC) multilevel converters. The application of the PEBB to build a three-level NPC converter and a dc-dc push-pull converter is presented and detailed in the paper, and demonstrate that the presented PEBB can be useful to shorten converter development times.

  • SUCCESS. Searching Unprecedented Cooperations on Climate and Energy to ensure Sustainability

     Bordonau Farrerons, Jose; Alepuz Menendez, Salvador; Busquets Monge, Sergio; Calle Prado, Alejandro; Nicolás Apruzzese, Joan; Peracaula Roura, Joan; Sumper, Andreas
    Participation in a competitive project

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  • Nuevas técnicas de conversión electrónica de potencia en ca para aplicaciones de generación distribuida y accionamientos de ca.

     Bordonau Farrerons, Jose; Busquets Monge, Sergio; Calle Prado, Alejandro; Nicolás Apruzzese, Joan; Rocabert Delgado, Joan
    Participation in a competitive project

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