Grupo de Sistemas Electrónicos Industriales

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Author: Patrao Herrero, Iván × Start date: 2010 ×

Publication Search Results

Now showing 1 - 10 of 21
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    Entendiendo la hoja de características de un inversor fotovoltaico
    (2023-03-08T08:31:43Z) Patrao Herrero, Iván; Dpto. de Ingeniería Electrónica; Escuela Técnica Superior de Ingeniería Industrial; Grupo de Sistemas Electrónicos Industriales
    En este vídeo se realiza un recorrido por los principales parámetros mostrados en la hoja de características de un inversor fotovoltaico comercial.
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    A Control Stage for Parallel-Connected Interlinking Converters in Hybrid AC-DC Microgrids
    (Institute of Electrical and Electronics Engineers, 2023) Liberos Mascarell, María Antonia; González Medina, Raúl; Patrao Herrero, Iván; Torán Mort, Enric; Garcerá Sanfeliú, Gabriel; Figueres Amorós, Emilio; Dpto. de Ingeniería Electrónica; Escuela Técnica Superior de Ingeniería del Diseño; Escuela Técnica Superior de Ingeniería Industrial; Grupo de Sistemas Electrónicos Industriales; AGENCIA ESTATAL DE INVESTIGACION
    [EN] Having two or more interlinking converters connected in parallel in hybrid microgrids has some benefits, like modularity, flexibility, and redundancy. However, the parallelization of the inverters leads to circulating currents that can cause system malfunctions. This work uses a method for suppressing low-frequency circulating currents in interlinking converters by controlling the zero-sequence component of the phase currents, showing that the control structure is valid for interlinking converters. The proposed control scheme has been applied to two parallel interlinking inverters of 5 kW and 2.5 kW, respectively. The interlinking inverters are connected to the grid, and they control the voltage in the DC bus of the hybrid microgrid. To validate the concept, simulation and experimental results are shown.
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    Diseño y evaluación de un inversor de potencia de 220W para conexión a red de módulos fotovoltáicos de 24 a 40V
    (Universitat Politècnica de València, 2013-12-04) Patrao Herrero, Iván; Garcerá Sanfeliú, Gabriel; Dpto. de Ingeniería Electrónica; Escuela Técnica Superior de Ingeniería Industrial; Grupo de Sistemas Electrónicos Industriales
    Consulta en la Biblioteca ETSI Industriales (7941)
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    DC-Bus Signaling control laws for the operation of DC-microgrids with renewable power sources
    (IEEE, 2023) Patrao Herrero, Iván; Torán Mort, Enric; González Medina, Raúl; Liberos Mascarell, María Antonia; Figueres Amorós, Emilio; Garcerá Sanfeliú, Gabriel; Dpto. de Ingeniería Electrónica; Escuela Técnica Superior de Ingeniería del Diseño; Escuela Técnica Superior de Ingeniería Industrial; Grupo de Sistemas Electrónicos Industriales; Agencia Estatal de Investigación; European Regional Development Fund; Ministerio de Asuntos Económicos y Transformación Digital
    [EN] DC-Bus Signaling (DBS) is a proven method to coordinate different microgrid agents, using the DC voltage of the microgrid as a communication signal. The droop control applied in a DC microgrid achieves accurate power-sharing among converters while leading to a certain voltage regulation error in the microgrid bus. The behaviour of the different agents in a microgrid is managed by using the voltage at each node of the microgrid as the DBS signal. The technique proposed in this paper uses an improved DBS technique to coordinate interlinking converters, photovoltaic generators, Energy Storage Systems and loads in a microgrid. The operation of the renewable power sources of a microgrid at the full generated power is desired due to economic and environmental reasons. The DBS technique proposed in this paper is adapted to integrate renewable power sources in the microgrid. The DBS-controlled Energy Storage Systems (ESS) will store the surplus energy if the generated power exceeds consumption. In the case of fully charged ESS, the renewable generators will limit their output power to those demanded by the loads. The proposed control laws have been tested in an experimental microgrid.
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    A Control Scheme to Suppress Circulating Currents in Parallel-Connected Three-Phase Inverters
    (MDPI AG, 2022-11) Liberos Mascarell, María Antonia; González Medina, Raúl; Patrao Herrero, Iván; Garcerá Sanfeliú, Gabriel; Figueres Amorós, Emilio; Dpto. de Ingeniería Electrónica; Escuela Técnica Superior de Ingeniería del Diseño; Escuela Técnica Superior de Ingeniería Industrial; Grupo de Sistemas Electrónicos Industriales; AGENCIA ESTATAL DE INVESTIGACION; European Regional Development Fund
    [EN] The parallel operation of inverters has many benefits, such as modularity and redundancy. However, the parallel connection of inverters produces circulating currents that may result in malfunctions of the system. In this work, a control technique for the elimination of the low-frequency components of the circulating currents in grid-connected inverters is presented. The proposed control structure contains n - 1 zero-sequence control loops, with n being the number of inverters connected in parallel. Simulation and experimental results have been carried out on a prototype composed of two 5 kW inverters connected in parallel. The results have been obtained by considering the following mismatches between both inverters: inductance values of the grid filters, unbalance of the delivered power, and the use of different modulation techniques.
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    Transformerless topologies for grid-connected single-phase photovoltaic inverters
    (Elsevier, 2011-09) Patrao Herrero, Iván; Figueres Amorós, Emilio; González Espín, Francisco José; Garcerá Sanfeliú, Gabriel; Dpto. de Ingeniería Electrónica; Escuela Técnica Superior de Ingeniería Industrial; Grupo de Sistemas Electrónicos Industriales; Ministerio de Ciencia e Innovación
    [EN] In order to improve the efficiency and reduce the cost of a photovoltaic system, the use of transformerless photovoltaic inverters is an alternative of increasing interest. However, this topology needs to be studied in detail, as it presents some problems related to the galvanic connection between the grid and the photovoltaic generator (e.g. efficiency degradation and safety problems). In this paper, a review of grid-connected single-phase photovoltaic inverters based on transformerless topologies has been carried out. On the one hand, some alternatives based on classical topologies have been presented. On the other hand, alternatives based on multi-level inverter topologies have been studied, showing up that no leakage current is generated in comparison to classical topologies. © 2011 Elsevier Ltd All rights reserved.
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    Thévenin y Norton, una ayuda para la resolución de circuitos electrónicos
    (2023-03-22T10:54:41Z) Patrao Herrero, Iván; Dpto. de Ingeniería Electrónica; Escuela Técnica Superior de Ingeniería Industrial; Grupo de Sistemas Electrónicos Industriales
    Simplificación de circuitos mediante la aplicación del teorema de Thévenin y del teorema de Norton
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    Amplificadores operaciones fáciles aplicando el Teorema de Millman
    (2023-03-08T08:09:03Z) Patrao Herrero, Iván; Dpto. de Ingeniería Electrónica; Escuela Técnica Superior de Ingeniería Industrial; Grupo de Sistemas Electrónicos Industriales
    En este video se explica cómo aplicar el Teorema de Millman a la resolución de circuitos con amplificadores operacionales, resultando en ecuaciones fáciles de resolver.
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    Integración de Convertidores Multinivel en Microrredes
    (Universitat Politècnica de València, 2011-11-29) Patrao Herrero, Iván; Figueres Amorós, Emilio; Garcerá Sanfeliú, Gabriel; Dpto. de Ingeniería Electrónica; Escuela Técnica Superior de Ingeniería Industrial; Grupo de Sistemas Electrónicos Industriales
    En el presente trabajo fin de Máster se aborda el diseño y simulación de un inversor fotovoltaico sin transformador, basado en la topología NPC, capaz de gestionar el punto de máxima potencia en 2 strings independientemente y de funcionar tanto en isla como conectado a red.
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    Microgrid architectures for low voltage distributed generation
    (Elsevier, 2015-03) Patrao Herrero, Iván; Figueres Amorós, Emilio; Garcerá Sanfeliú, Gabriel; González Medina, Raúl; Dpto. de Ingeniería Electrónica; Escuela Técnica Superior de Ingeniería del Diseño; Escuela Técnica Superior de Ingeniería Industrial; Grupo de Sistemas Electrónicos Industriales; Ministerio de Economía y Competitividad
    [EN] The high penetration of distributed generators, most of them based on renewable energy sources, is modifying the traditional structure of the electric distribution grid. If the power of distributed generators is high enough to feed the loads of a certain area, this area could be disconnected from the main grid and operate in islanded mode. Microgrids are composed by distributed generators, energy storage devices, intelligent circuit breakers and local loads. In this paper, a review of the main microgrid architectures proposed in the literature has been carried out. The microgrid architectures are first classified regarding their AC or DC distribution buses. Besides, more complex microgrid architectures are shown. Both advantages and disadvantages of each one of the microgrid families are discussed.