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    Gestión de energía en sistemas híbridos Red-PV-diesel en el proyecto MED-Solar  Open access

     Velasco Quesada, Guillermo; Casellas Beneyto, Francisco; Guinjoan Gispert, Francisco; Pique Lopez, Robert; Martínez García, Herminio; Pineau, A.; Graillot, A.
    Seminario Anual de Automática, Electrónica Industrial e Instrumentación
    p. 3010.1-3010.6
    Presentation's date: 2014-06-26
    Presentation of work at congresses

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    El presente trabajo aborda el diseño de la estructura de un sistema de gestión de energía eléctrica aplicable a sistemas eléctricos híbridos formados por la red eléctrica y sistemas de generación fotovoltaica, generación diésel y almacenamiento. La implementación de estos sistemas híbridos y sus sistemas de gestión será, dentro del marco del Proyecto MED-Solar, en tres países del área del Máshrek (Líbano, Palestina y Jordania), con el fin de demostrar que este tipo de instalaciones puede reducir parte de la problemática energética presente en estos países y, por tanto, mostrarse atractiva para diversos sectores económicos.

  • Banco de pruebas para verificar el rendimiento estático y dinámico del MPPT

     Velasco Quesada, Guillermo; Casellas Beneyto, Francisco; Guinjoan Gispert, Francisco; Pique Lopez, Robert
    Seminario Anual de Automática, Electrónica Industrial e Instrumentación
    p. 3016.1-3016.6
    DOI: -
    Presentation's date: 2014-06-26
    Presentation of work at congresses

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  • Simulación mediante ¿hardware in the loop¿ de un convertidor buck

     Velasco Quesada, Guillermo; Casellas Beneyto, Francisco; Guinjoan Gispert, Francisco; Esteban, Jordi; Martínez García, Herminio; Pique Lopez, Robert
    Seminario Anual de Automática, Electrónica Industrial e Instrumentación
    p. 6007.1-6007.5
    Presentation's date: 2014-06-26
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  • Fuzzy logic controller design for battery energy management in a grid connected electro-thermal microgrid

     Arcos Aviles, Diego Gustavo; Vega Muñoz, Christian; Guinjoan Gispert, Francisco; Marroyo Palomo, Luis; Sanchis Gúrpide, Pablo
    IEEE International Symposium on Industrial Electronics
    p. 2014-2019
    DOI: 10.1109/ISIE.2014.6864926
    Presentation's date: 2014-06-01
    Presentation of work at congresses

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    A fuzzy logic controller strategy for battery energy management in a grid connected electro-thermal residential microgrid is presented. The fuzzy control policy manages the power of the microgrid storage elements in order to minimize a set of quality indices involving, among others, the power profile exchanged with the mains. Numerical simulations using real measured data generation and consumption are provided to both validate the control design and to highlight the benefits of including thermal elements in the overall energy management strategy of the system. © 2014 IEEE.

  • Low cost photovoltaic array emulator design for the test of PV grid-connected inverters

     Chavarria Roe, Javier; Biel Sole, Domingo; Guinjoan Gispert, Francisco; Poveda Lopez, Alberto; Masana Nadal, Francisco; Alarcon Cot, Eduardo Jose
    International Multi-Conference on Systems, Signals and Devices
    p. 1-6
    DOI: 10.1109/SSD.2014.6808860
    Presentation's date: 2014-02-11
    Presentation of work at congresses

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    This paper presents a low cost photovoltaic array emulator design based on a DC-DC Boost converter. This design arises from the need to study in the laboratory new PV inverters based on SiC devices in order to improve their performances. The lack of space for installation of real photovoltaic panels and the high costs of the commercial emulators require of alternative systems which allow the reproduction of the characteristic curves of the panels as well as their dependence on changing environmental conditions. The emulator design is applied to a full-bridge single phase grid-connected inverter. Simulation results are provided to confirm the proper operation of the PV emulator. © 2014 IEEE.

  • Estudio y simulación de MOSFETs de carburo de silicio (SiC) mediante PSIM para un inversor fotovoltaico en puente completo conectado a red

     Chavarria Roe, Javier; Biel Sole, Domingo; Guinjoan Gispert, Francisco; Poveda Lopez, Alberto; Alarcon Cot, Eduardo Jose; Massana, Francisco
    Seminario Anual de Automática, Electrónica Industrial e Instrumentación
    p. 50
    Presentation's date: 2013-07-11
    Presentation of work at congresses

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    El presente artículo muestra, mediante simulación PSIM, el impacto de la utilización de MOSFETs de Carburo de Silicio (SiC) en la eficiencia de inversores fotovoltaicos en puente completo conectados a red. Las simulaciones presentadas utilizan la facilidad ¿Device Database Editor¿ para construir modelos de MOSFET tanto de Si como de SiC y comparan diversos parámetros como la eficiencia o el rizado de la corriente de salida. Estas simulaciones también permiten establecer un método de diseño de la frecuencia de conmutación y del inductor de salida del inversor.

  • SiC Power JFET Electrothermal Macromodel

     Massana, Francisco; Chavarria Roe, Javier; Biel Sole, Domingo; Poveda Lopez, Alberto; Guinjoan Gispert, Francisco
    International Conference Mixed Design of Integrated Circuits and Systems
    p. 444-447
    Presentation's date: 2013-06-21
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    The Machreck Energy Development - Solar project MED-Solar  Open access

     Velasco Quesada, Guillermo; Guinjoan Gispert, Francisco; Pique Lopez, Robert; Roman Lumbreras, Manuel; Vallvé, Xavier; Tarragó, J.; Bugatti, N.
    International Multi-Conference on Systems, Signals and Devices
    p. 6-13
    Presentation's date: 2013-03-19
    Presentation of work at congresses

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    The aim of this communication is to introduce the project MED-Solar, acronym of Machrek Energy Development. This project is part of the new European Neighborhood Policy (ENP), policy that seeks to reinforce relations with neighboring countries to the east and south in order to promote prosperity, stability and security at its borders. The main objective of this project is the promotion and implementation of innovative technologies and know-how transfer in the field of solar energy, including that stemming from private sector, and that may be implemented in particular or public facilities through public procurement processes.

  • MACHREK ENERGY DEVELOPMENT

     Martínez García, Herminio; Pique Lopez, Robert; Velasco Quesada, Guillermo; Casellas Beneyto, Francisco; Guinjoan Gispert, Francisco
    Competitive project

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  • Mathematical model of total cross-tied photovoltaic arrays in mismatching conditions

     Ramos Paja, Carlos Andres; Bastidas, Juan David; Saavedra Montes, Andres Julian; Guinjoan Gispert, Francisco; Goez, M.
    Colombian Workshop on Circuits and Systems
    p. 1-6
    DOI: 10.1109/CWCAS.2012.6404068
    Presentation's date: 2012-11
    Presentation of work at congresses

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    This paper presents a mathematical procedure for modeling rectangular (N rows with M modules each) and non-rectangular photovoltaic (PV) arrays in Total Cross-Tied (TCT) configuration operating in uniform and mismatching conditions. The proposed model uses the simple single diode representation for each PV module; then each row of the TCT array is represented as an equivalent non-linear PV circuit with a bypass diode, which allows to represent the TCT array as one string of equivalent PV circuits. The inflection voltages (array voltages that turn off the bypass diodes) of the string are calculated in order to solve only the non-linear equation system related to the active equivalent PV circuits for calculating the array current for a given voltage. Such a strategy reduces the computational burden and improves calculation speed. A TCT array of 4×2 with deep mismatching conditions was implemented in PSIM software to validate the proposed model, obtaining a correlation between model predicted data and the circuital simulation. The accuracy and improved calculation speed of the proposed model allow its use altogether with reconfiguration techniques as well as to reduce the time of energetic evaluations of TCT arrays for PV planning.

  • Battery management fuzzy control for a grid-tied microgrid with renewable generation

     Arcos Aviles, Diego Gustavo; Guinjoan Gispert, Francisco; Barricarte, J.; Marroyo Palomo, Luis; Sanchis Gúrpide, Pablo; Valderrama Blavi, Hugo
    Annual Conference of the IEEE Industrial Electronics Society
    p. 5607-5612
    DOI: 10.1109/IECON.2012.6389008
    Presentation's date: 2012-10
    Presentation of work at congresses

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    A fuzzy logic controller design for the battery management of a grid-tied real domestic microgrid including 6 kWp of PV and 6kW wind power renewable generators is presented. The fuzzy controller parameters design is undertaken on the basis of the minimization of a set of quality indices such as the battery dynamic range and the power variation range exchanged with the grid. The features of the proposed approach are highlighted with yearly real data by numerical simulations of the power profile injected into the grid and the battery state of charge.

  • A design-oriented optimization framework for envelope trackers: Application to a sliding-mode control buck converter for EDGE

     Marco Platón, Lázaro; Poveda Lopez, Alberto; Guinjoan Gispert, Francisco; Maksimovic, Dragan; Alarcon Cot, Eduardo Jose
    International Power Electronics and Motion Control Conference
    p. 21-26
    Presentation's date: 2012-09
    Presentation of work at congresses

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    Banco de ensayos para la caracterización del rendimiento energético y del rendimiento del MPPT en convertidores fotovoltaicos  Open access

     Casellas Beneyto, Francisco; Velasco Quesada, Guillermo; Pique Lopez, Robert; Guinjoan Gispert, Francisco
    Seminario Anual de Automática, Electrónica Industrial e Instrumentación
    p. 326-331
    Presentation's date: 2012-07-13
    Presentation of work at congresses

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    En este trabajo se presenta una propuesta de ensayo para caracterizar el comportamiento del algoritmo de seguimiento de punto de máxima potencia (MPPT: Maximum Power Point Tracking) programado en los convertidores fotovoltaicos (PV: Photo-Voltaic). Este ensayo también permite estimar el rendimiento energético de dichos convertidores. Para los ensayos propuestos se utiliza un simulador de generador fotovoltaico (SAS: Solar Array Simulator) junto con un equipo para la medida y registro de potencia instantánea. Los convertidores ensayados (DUT: Device Under Test) para verificar el banco de pruebas utilizado son: un inversor con inyección a red y un convertidor DC/DC para carga de baterías. Para la evaluación del sistema se han realizado dos tipos de ensayos, uno denominado estático, para evaluar las fluctuaciones del algoritmo MPPT alrededor del punto de máxima potencia (MPP: Maximum Power Point) del generador PV y otro ensayo, denominado dinámico, para evaluar el comportamiento del MPPT cuando se produce un cambio en el valor de los parámetros que determinan el MPP del generador PV. Finalmente se presentan los resultados obtenidos tras los ensayos realizados y se valora el comportamiento de los DUT.

  • Influencia de los parámetros de diseño de un inversor fotovoltaico en la estabilidad de una microred

     Rodríguez Villarreal, José Raúl; Biel Sole, Domingo; Guinjoan Gispert, Francisco
    Seminario Anual de Automática, Electrónica Industrial e Instrumentación
    p. 390-395
    Presentation's date: 2012-07-13
    Presentation of work at congresses

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    El incremento de la generación de energía distribuida en la red eléctrica ha despertado inquietudes respecto a la estabilidad de la misma. Los generadores fotovoltaicos conectados a la red eléctrica tienen que lidiar con variaciones en el consumo y la generación en la red, esto puede afectar el desempeño y la estabilidad de los generadores y de la red. Este documento presenta el efecto de los par´ametros de un generador fotovoltaico y la relación generación/consumo en la estabilidad de una microred. Además, se ajusta la ganancia del controlador de corriente del generador en función del consumo con el fin mantener la estabilidad de la microred para diferentes escenarios de generación/consumo.

  • Ripple-based prediction of fast-scale instabilities in current mode controlled switching converters

     Rodríguez Rodríguez, Enric; Martínez García, Herminio; Guinjoan Gispert, Francisco; El Aroudi, Abdelali; Poveda Lopez, Alberto; Alarcon Cot, Eduardo Jose
    IEEE International Symposium on Circuits and Systems
    p. 688-691
    DOI: 10.1109/ISCAS.2012.6272126
    Presentation's date: 2012-05-22
    Presentation of work at congresses

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    Estimación de posición en un motor síncrono de imanes permanentes mediante técnicas de inyección de alta frecuencia con control deslizante  Open access

     Repecho Del Corral, Victor; Arias Pujol, Antoni; Biel Sole, Domingo; Guinjoan Gispert, Francisco
    Seminario Anual de Automática, Electrónica Industrial e Instrumentación
    p. 355-360
    Presentation's date: 2011-07-06
    Presentation of work at congresses

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    En el presente documento, se muestra el estudio para la estimación de la posición del rotor de un Motor de Imanes Permanentes (PMSM), mediante inyección de señal de alta frecuencia (HF) bajo un control en modo deslizante (SMC). Las técnicas de inyección de alta frecuencia han sido utilizadas con éxito en sistemas de control de campo orientado (FOC), pero no dan buenos resultados en controles no lineales como el control directo de torque (DTC), por su mayor ancho de banda. Estas técnicas se basan en la medición indirecta de las inductancias de estátor, las cuales dependen del valor de la posición de rotor. En el presente estudio se muestra una técnica que permite utilizar técnicas de inyección bajo un control en modo deslizamiento. Para concluir se muestran simulaciones del sistema con los algoritmos de estimación propuestos, confirmando la utilidad del sistema propuesto.

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    Análisis de la estabilidad de sistemas fotovoltaicos conectados a red mediante la respuesta frecuencial de la impedancia  Open access

     RODRIGUEZ VILLAREAL, José Raúl; Biel Sole, Domingo; Guinjoan Gispert, Francisco
    Seminario Anual de Automática, Electrónica Industrial e Instrumentación
    p. 297-302
    Presentation's date: 2011-07-06
    Presentation of work at congresses

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    El incremento de la generación de energía distribuida en la red eléctrica ha despertado inquietudes respecto a la estabilidad de la misma. Los generadores fotovoltaicos conectados a la red eléctrica tienen que lidiar con variaciones en el consumo y la generación en la red, esto puede afectar el desempeño y la estabilidad de los generadores y de la red. Este documento presenta un método analítico que permite mantener la estabilidad de la red eléctrica ajustando los parámetros del sistema de control del generador basado en la respuesta frecuencial de la impedancia vista desde el punto de conexión.

  • Stability analysis of grid-connected PV systems based on impedance frequency response

     RODRIGUEZ VILLAREAL, José Raúl; Biel Sole, Domingo; Guinjoan Gispert, Francisco
    IEEE International Symposium on Industrial Electronics
    p. 1747-1752
    DOI: 10.1109/ISIE.2011.5984326
    Presentation's date: 2011-06
    Presentation of work at congresses

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    The increase of distributed generation on electric networks has raised the concern of grid stability, among other issues. The PV generators connected to the grid have to deal with varying consumption and generation scenarios, however, this may affect the performance and stability of the generators themselves, as well as the grid. This document presents an analytical stability method to maintain the grid stability by adjusting the generator control parameters based on the impedance frequency response measured at the point of connection.

  • Angle estimation using high frequency injection for sliding mode controlled permanent magnet synchronous machines drives

     Repecho Del Corral, Victor; Biel Sole, Domingo; Arias Pujol, Antoni; Guinjoan Gispert, Francisco
    International Conference-Workshop on Compatibility and Power Electronics
    p. 161-166
    DOI: 10.1109/CPE.2011.5942225
    Presentation's date: 2011-06-01
    Presentation of work at congresses

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    In this paper, high frequency injection (HF) technique for rotor position estimation using Sliding Mode Control (SMC) in Permanent Magnet Synchronous Machines (PMSMs) is presented. The novelty of this paper is the fact that the SMC is used instead of the conventional Field Oriented Control (FOC) and therefore the injected HF test signals for tracking the machine’ saliency (difference between Ld and Lq) is naturally eliminated by the SMC. Such suppression is tackled when using the SMC and the position signals are calculated to properly estimate the permanent magnet (PM) position. Finally, some simulation results are presented, confirming the proper angle estimation at low speed reversal and load impact at zero speed.

  • A grounded-output 5-switch bipolar buck-boost converter topology for switching power amplifiers

     Garcia Tormo, Albert; Poveda Lopez, Alberto; Alarcon Cot, Eduardo Jose; Guinjoan Gispert, Francisco
    IEEE International Symposium on Circuits and Systems
    p. 2769-2772
    DOI: 10.1109/ISCAS.2011.5938179
    Presentation's date: 2011
    Presentation of work at congresses

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    This work presents a switching converter topology which can boost and step down the supply voltage and can deliver both positive and negative voltages to a grounded load (bipolar converter topology with non-floating output). This topology, which uses five switches to perform the power conversion, is mostly intended for switching amplifiers, especially for applications which require both boosting and inverting the supply voltage (to supply bipolar voltage signals), and/or EMI-sensitive applications. Using a single-stage switching amplifier based on this 5-switch topology, it is feasible to supply a grounded load with a symmetrical bipolar voltage signal whose magnitude extends up to several times the magnitude of the supply voltage.

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    Power sizing factor design of central inverter PV grid-connected systems: a simulation approach.  Open access

     Velasco Quesada, Guillermo; Pique Lopez, Robert; Guinjoan Gispert, Francisco; Casellas Beneyto, Francisco; de la Hoz Casas, Jordi
    International Power Electronics and Motion Control Conference
    p. S9-32-S9-36
    DOI: 10.1109/EPEPEMC.2010.5606542
    Presentation's date: 2010-09-06
    Presentation of work at congresses

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    This paper presents a simulation approach which can help in the preliminary power sizing design of a gridconnected PV system based on a single inverter configuration. Given a nominal peak power of the PV array, this simulation procedure leads to the PV inverter maximum rated power which maximizes the yearly injected energy to the grid.

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    El concepto de Smart Metering en el nuevo escenario de distribución eléctrica  Open access

     Casellas Beneyto, Francisco; Velasco Quesada, Guillermo; Guinjoan Gispert, Francisco; Pique Lopez, Robert
    Seminario Anual de Automática, Electrónica Industrial e Instrumentación
    p. 752-757
    Presentation's date: 2010-07-09
    Presentation of work at congresses

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    La medición inteligente se ha convertido en un tema de la máxima actualidad y de importancia creciente; ya se aplica la normativa para su despliegue, se desarrollan proyectos piloto y han llegado al mercado nuevos dispositivos. En este trabajo se recogen propuestas y tendencias de los contadores actuales de energía eléctrica. El contador se representa como la interfaz entre el sistema del usuario, que es el consumidorproductor distribuido de energía, y la red eléctrica. A partir de esta relación y con la tecnología electrónica actual aparece el concepto denominado “smart metering”. El documento describe las funciones de los contadores de energía eléctrica desde el inicio, con el contador electromecánico hace 120 años, hasta los dispositivos actuales. Se incluyen las características genéricas de medida, las tecnologías de estos equipos y referencias normativas que utilizan estos sistemas de medida de energía eléctrica. Se concluye con las tendencias previsibles en un futuro inmediato.

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    Bandwidth-Enhancement gm-C Filter with independent ¿o and Q Tuning Mechanisms in Both Topology and Control Loops  Open access

     Martínez García, Herminio; Vidal Lopez, Eva Maria; Cantó, Andrea; Poveda Lopez, Alberto; Guinjoan Gispert, Francisco
    IEEE International Symposium on Circuits and Systems
    p. 3625-3628
    DOI: 10.1109/ISCAS.2010.5537780
    Presentation's date: 2010-05-30
    Presentation of work at congresses

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    This paper deals with the proposal of a new topology for a gm-C continuous time filter which allows the adjustment and tuning of its characteristic parameters (ωO and Q) in an independent way (without cross-tuning), thereby extending the Q range of the filter for a particular ωO value. Additionally a comparison of three different Q-tuning algorithms is presented. It is shown that an LMS-based Q-control strategy allows to overcome the intrinsic dependence between the Q and ωO tuning loops. The combination of both the proposed filter topology and the selected control loop algorithms results in an enhanced transient performance as well as an improvement in terms of cross-detuning.

  • ARQUITECTURAS ELECTRONICAS DE POTENCIA PARA GENERACIÓN DISTRIBUIDA. ARQUITECTURA AC

     Pique Lopez, Robert; Velasco Quesada, Guillermo; Casellas Beneyto, Francisco; Biel Sole, Domingo; Guinjoan Gispert, Francisco
    Competitive project

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  • Energy Power sizing factor design of central inverter PV grid-connected systems: a simulation approach

     Velasco Quesada, Guillermo; Pique Lopez, Robert; Guinjoan Gispert, Francisco; Casellas Beneyto, Francisco; de la Hoz Casas, Jordi
    International Power Electronics and Motion Control Conference
    p. S9-32-S9-36
    DOI: 10.1109/EPEPEMC.2010.5606542
    Presentation of work at congresses

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  • Multi-level asynchronous Sigma Delta modulators for wideband switching power amplifiers

     Garcia Tormo, Albert; Poveda Lopez, Alberto; Alarcon Cot, Eduardo Jose; Guinjoan Gispert, Francisco
    IEEE Workshop on Computers in Power Electronics
    p. 1-8
    DOI: 10.1109/COMPEL.2010.5562381
    Presentation of work at congresses

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    This work extends the Asynchronous ΣΔ Modulator and its Adaptive version to multi-level modulators, targeting wideband high-efficiency switching power amplifiers. The performance of these modulators is compared with the multi-level Pulse Width Modulator, the most common modulator in multilevel switching power amplifiers. Behavioural model simulation results show that, unlike the multi-level PWM (which can only be used at high switching frequencies), the Asynchronous ΣΔ Modulators can also be used at average switching frequencies close to the signal bandwidth. At high switching frequencies, the performance of all the modulators is similar. The Asynchronous ΣΔ Modulators have further and more important advantages, such as high PSRR (even at the input signal frequency), the ability of handling non-regular distributed voltage levels, or a low ratio between the average switching frequency and the maximum instantaneous switching frequency.

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    Simulation and analysis of distributed PV generation in a LV network using MATLAB-Simulink  Open access

     RODRIGUEZ VILLAREAL, José Raúl; RUIZ ALLENDE, Felipe; Biel Sole, Domingo; Guinjoan Gispert, Francisco
    IEEE International Symposium on Circuits and Systems
    p. 2322-2325
    Presentation of work at congresses

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    Power quality of electric networks with high penetration of photovoltaic systems has been analyzed in different publications. It has been noted that inverters may increase their harmonic emissions when connected to weak networks, this harmonics may affect other equipments connected to the network and decreasing their performance. This document shows the effects of connecting multiple photovoltaic generators in a network through simulations using MATLAB-Simulink SimPowerSystems.

    Postprint (author’s final draft)

  • Takagi-sugeno fuzzy model to approximate mosfet capacitance for VRM applications

     López, Toni; Alarcon Cot, Eduardo Jose; Guinjoan Gispert, Francisco; Poveda Lopez, Alberto
    IEEE International Symposium on Circuits and Systems
    p. 613-616
    DOI: 10.1109/ISCAS.2010.5537519
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  • Power sizing factor design of central inverter PV grid-connected systems: a simulation approach

     Velasco Quesada, Guillermo; Pique Lopez, Robert; Guinjoan Gispert, Francisco; Casellas Beneyto, Francisco; de la Hoz Casas, Jordi
    Power Electronics and Motion Control Conference
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    Energy-balance and sliding mode control strategies of a cascade H-bridge multilevel converter for grid-connected PV systems  Open access

     Negroni Vera, Juan Jose; Biel Sole, Domingo; Guinjoan Gispert, Francisco; Meza Benavides, Carlos
    International Conference on Industrial Technology
    p. 1155-1160
    DOI: 10.1109/ICIT.2010.5472591
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    This work presents the design of a sliding-mode based current controller for a Cascade Full Bridge Multilevel Inverter grid connected PV system. The design also includes a modulation strategy to share the control action among the cascade-connected bridges in order to concurrently synthesize a multilevel waveform and to keep each of the PVG at its maximum operating point. Experimental results are included to validate the proposed approach.

  • Bandwidth-enhancement g(m)-C filter with independent omega(O) and Q tuning mechanisms in both topology and control loops

     Martínez García, Herminio; Vidal Lopez, Eva Maria; Cantó, Andrea; Poveda Lopez, Alberto; Guinjoan Gispert, Francisco
    IEEE International Symposium on Circuits and Systems
    p. 3625-3628
    Presentation's date: 2010
    Presentation of work at congresses

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    This paper deals with the proposal of a new topology for a gm-C continuous time filter which allows the adjustment and tuning of its characteristic parameters (ωO and Q) in an independent way (without cross-tuning), thereby extending the Q range of the filter for a particular ωO value. Additionally a comparison of three different Q-tuning algorithms is presented. It is shown that an LMS-based Q-control strategy allows to overcome the intrinsic dependence between the Q and ωO tuning oops. The combination of both the proposed filter topology and the selected control loop algorithms results in an enhanced ransient performance as well as an improvement in terms of cross-detuning.

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

     Biel Sole, Domingo; Garcia Tormo, Albert; Alarcon Cot, Eduardo Jose; Fernandez Martinez, Daniel; Masana Nadal, Francisco; Poveda Lopez, Alberto; Guinjoan Gispert, Francisco
    Competitive project

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  • Sistema de adquisición de datos distribuido para instalaciones fotovoltaicas

     Casellas Beneyto, Francisco; Velasco Quesada, Guillermo; Guinjoan Gispert, Francisco
    Seminario Anual de Automática, Electrónica e Instrumentación
    p. 6
    Presentation's date: 2008-09-09
    Presentation of work at congresses

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  • DISPOSITIVO DE CONMUTACIÓN DEDICADO A LA EXTRACCIÓN ÓPTIMA DE ENERGÍA EN GENERADORES FOTOVOLTAICOS

     Velasco Quesada, Guillermo; Guinjoan Gispert, Francisco; Pique Lopez, Robert
    Date of request: 2008-07-07
    Invention patent

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  • DISPOSITIVO DE CONMUTACIÓN DEDICADO A LA EXTRACCIÓN ÓPTIMA DE ENERGÍA EN GENERADORES FOTOVOLTAICOS.

     Velasco Quesada, Guillermo; Guinjoan Gispert, Francisco; Pique Lopez, Robert
    Date of request: 2008-07-07
    Invention patent

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    Dispositivo de conmutación dedicado a la extracción óptima de energía en generadores fotovoltaicos.

    En las instalaciones fotovoltaicas de producción de energía eléctrica se produce una pérdida en la potencia generada cuando las condiciones de operación de los elementos fotovoltaicos interconectados en una misma serie no son idénticas. Esta pérdida de potencia generada, únicamente puede ser compensada cambiando la interconexión de los elementos fotovoltaicos del generador de forma que se optimice la extracción de potencia. Esta es la función de dispositivo de conmutación objeto de esta invención.

    Dicho dispositivo está formado por un conjunto de conmutadores controlados, que permite modificar en tiempo real las interconexiones eléctricas entre los elementos fotovoltaicos del generador. El control del conjunto de conmutadores se basa en una estrategia de ecualización de irradiancia, asimismo objeto de esta invención, que determina aquella interconexión de los elementos fotovoltaicos que optimiza la extracción de potencia, y por tanto de energía, de la instalación.

  • Energy Efficiency Improvement in Reconfigurable Grid-Connected PV Systems with Adjustable Sizing Factor strategy

     Velasco Quesada, Guillermo; Guinjoan Gispert, Francisco; Pique Lopez, Robert
    23rd European Photovoltaic Solar Energy Conference and Exhibition (23rd EU PVSEC)
    p. 1983-1988
    Presentation of work at congresses

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  • Grid-connected PV systems energy extraction improvement by means of an Electric Array Reconfiguration (EAR) strategy: Operating principle and experimental results

     Velasco Quesada, Guillermo; Guinjoan Gispert, Francisco; Pique Lopez, Robert
    39th IEEE Power Electronics Specialists Conference. PESC 2008
    p. 1983-1988
    Presentation of work at congresses

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  • Characterisation of Low-OSR Asynchronous Sigma-Delta Modulator with High-Order Buck Converter for Wideband Switching Amplifier

     Garcia-Tormo, Albert; Garcia Tormo, Albert; Alarcon Cot, Eduardo Jose; Poveda Lopez, Alberto; Guinjoan Gispert, Francisco
    IEEE International Symposium on Circuits and Systems
    p. 2108-2201
    Presentation of work at congresses

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  • Automatic dead-time adjustment CMOS mixed-signal circuit for a DCM-operated 3-level switching power converter

     Villar Pique, Gerard; Alarcon Cot, Eduardo Jose; Guinjoan Gispert, Francisco; Poveda Lopez, Alberto
    IEEE International Symposium on Circuits and Systems
    p. 3053-3056
    Presentation of work at congresses

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  • Control de Inversores Multinivel en Cascada para Sistemas Fotovoltaicos Conectados a Red Mediante Modulación PD-PWM con Asignación Temporal de Secuencias

     Negroni Vera, Juan Jose; Guinjoan Gispert, Francisco; Meza Benavides, Carlos; Biel Sole, Domingo; Valderrama Blavi, Hugo; Marroyo Palomo, Luis
    Seminario Anual de Automática, Electrónica Industrial e Instrumentación
    Presentation of work at congresses

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  • Interleaving Quasi-Sliding Mode Control of Parallel-Connected Buck-based Inverters

     Biel Sole, Domingo; Fossas Colet, Enric; Guinjoan Gispert, Francisco; Ramos Lara, Rafael Ramon
    10th Workshop on Variable Structure Systems
    p. 337-342
    Presentation of work at congresses

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  • Characterizing fast-scale instability in a buck-based switching amplifier for wideband tracking

     Rodriguez Vilamitjana, Enric; Guinjoan Gispert, Francisco; Poveda Lopez, Alberto; Alarcon Cot, Eduardo Jose; El-Aroudi, A
    IEEE International Symposium on Circuits and Systems
    p. 3262-3265
    Presentation of work at congresses

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  • Modelado de balance energético y control discreto de un inversor monofásico para aplicaciones fotovoltaicas conectadas a red

     Meza Benavides, Carlos; Negroni Vera, Juan Jose; Biel Sole, Domingo; Guinjoan Gispert, Francisco
    Seminario Anual de Automática, Electrónica Industrial e Instrumentación
    Presentation of work at congresses

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  • Diccionari de Telecomunicacions

     Aguilar Igartua, Mónica; Alcober Segura, Jesus Angel; Altes Bosch, Jorge; Aragones Cervera, Xavier; Artigas Garcia, David; Bardes Llorensi, Daniel; Barlabe Dalmau, Antoni; Bragos Bardia, Ramon; Calderer Cardona, Josep; Cardama Aznar, Angel; Casademont Serra, Jordi; Casals Ibañez, Lluis; Comeron Tejero, Adolfo; Cotrina Navau, Josep; Cruz Llopis, Luis Javier de La; Dios Otin, Victor Federico; Duxans Barrobes, Helena; Esparza Martin, Oscar; Esquerra Llucià, Ignasi; Garcia Vizcaino, David; Garcies Salva, Pau; Gomez Montenegro, Carlos; Gorricho Moreno, Juan Luis; Guinjoan Gispert, Francisco; Hesselbach Serra, Xavier; Liria Righetti, Antoni; Lopez Salcedo, Jose Antonio; Madrenas Boadas, Jordi; Madueño Ruiz, María Isabel; Mestre Pons, Francesc Xavier; Monte Moreno, Enrique; Morros Rubió, Josep Ramon; Muñoz Tapia, Jose Luis; Pallares Segarra, Esteve; Pons Nin, Joan; Recolons Martos, Jaume; Rincon Rivera, David; Riu Costa, Pere Joan; Ruiz Vela, Inmaculada; Pradell Cara, Lluis; Pascual Iserte, Antonio; Prat Viñas, Luis; Rey Micolau, Francesc; Villares Piera, N. Javier
    Date of publication: 2007-03
    Book

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  • Sistema de adquisición de banda ancha para prácticas remotas con convertidores conmutados DC-DC

     Garcia Tormo, Albert; Poveda Lopez, Alberto; Guinjoan Gispert, Francisco; Prat Viñas, Luis
    Seminario Anual de Automática, Electrónica Industrial e Instrumentación
    p. 316-321
    Presentation of work at congresses

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  • Inverter power sizing considerations in grid-connected pv systems

     Velasco Quesada, Guillermo; Guinjoan Gispert, Francisco; Pique Lopez, Robert; Negroni Vera, Juan Jose; Conesa Roca, Alfonso
    European Conference on Power Electronics and Applications
    Presentation of work at congresses

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  • Modelo de distribución geográfica del factor de escalado en sistemas fotovoltaicos conectados a red

     Velasco Quesada, Guillermo; Pique Lopez, Robert; Guinjoan Gispert, Francisco; Negroni Vera, Juan Jose
    Seminario Anual de Automática, Electrónica Industrial e Instrumentación
    Presentation of work at congresses

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