Ponencias (Ingeniería Electrónica)
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Ponencia Implementación de prototipos electrónicos para el autoaprendizaje en asignaturas de ingeniería electrónica(2024) Martínez Heredia, Juana María; Colodro Ruiz, Francisco; Ingeniería ElectrónicaEl proyecto de innovación docente desarrollado en la Escuela Técnica Superior de Ingeniería (ETSI) de la Universidad de Sevilla se enfocó en mejorar el aprendizaje autónomo de estudiantes de asignaturas iniciales de ingeniería electrónica. Mediante el uso de kits electrónicos, con placas Arduino y otros componentes, se les ofreció la oportunidad de trabajar en proyectos reales de manera autónoma, aplicando sus conocimientos teóricos en situaciones prácticas. Los proyectos desarrollados incluyeron sistemas de control de LED, pantallas y motores, con aplicaciones destacadas como un sistema de asistencia al estacionamiento y un sintetizador musical. Los estudiantes evaluaron la experiencia a través de encuestas, reflejando un alto nivel de satisfacción y motivación. El proyecto cumplió su objetivo al incrementar la confianza de los participantes en el desarrollo de proyectos electrónicos, incentivando la creatividad y el autoaprendizaje. Además, fomentó el uso de tecnologías complementarias, como programas de simulación e internet, promoviendo un aprendizaje más profundo en un entorno flexible y autónomo.Ponencia Estudio energético de FSMPC para un motor de 5 fases(Comité Español de Automática (CEA), 2025-10-06) Marsal Pederzani, Esteban; Garrido Satué, Manuel; Colodro Ruiz, Francisco; Ingeniería de Sistemas y Automática; Ingeniería Electrónica; Ministerio de Ciencia, Innovación y Universidades (MICIU). España; Agencia Estatal de Investigación. España; TIC275: Investigación y Desarrollo en Electrónica, Automática y Tecnologías EmergentesEl control de motores mediante el manejo directo de los estados del inversor (FSMPC) ha sido objeto de estudio recientemente. El interés viene motivado por dos factores: la rapidez de respuesta comparada con el caso habitual usando moduladores y la flexibilidad para su aplicación a diversos sistemas y para incorporar diversos criterios de control. En particular ya se ha establecido previamente la posibilidad de usar FSMPC en sistemas multifásicos, aprovechando las ventajas intrínsecas de ́estos. También se ha demostrado la posibilidad de lograr un cierto equilibrio entre producción de par y contenido armónico. Queda sin embargo por explorar la capacidad de reducir las pérdidas totales mediante la sintonía del FSMPC. En este artículo se da a conocer un trabajo en curso destinado a tal fin. En particular se presentan resultados experimentales con una máquina de 5 fases y un sistema diseñado para la estimación de las pérdidas totales.Ponencia Control predictivo de motores de cinco fases mediante estrategias mono-vector ymulti-vector(Comité Español de Automática (CEA), 2025-10-06) Garrido Satué, Manuel; Martínez Heredia, Juana María; Mora Jiménez, José Luis; Ingeniería Electrónica; Ingeniería de Sistemas y Automática; Ministerio de Ciencia, Innovación y Universidades (MICIU). España; Agencia Estatal de Investigación. España; TIC275: Investigación y Desarrollo en Electrónica, Automática y Tecnologías EmergentesEl control predictivo de motores polifásicos ha utilizado diversas aproximaciones en lo que respecta al uso de los estados del inversor. En algunas propuestas se usa más de una configuración del inversor dentro de un mismo periodo de muestreo. Estos métodos proporcionan una forma fácil de lidiar con el contenido del plano armónico al tiempo que disminuyen la carga computacional. En este artículo se presenta una comparación entre un método multi-vector y un método mono-vector. Para la comparación se usa la bondad de control de corrientes de estátor en el plano productor de par y en el plano armónico. Se ajusta la frecuencia de conmutación para proporcionar valores similares en ambos casos, proporcionando de este modo igual uso de inversor a ambos métodos.Ponencia FSC-MPC Switching Phase Control for Interleaved DC/DC Vehicle Charger(Institute of Electrical and Electronics Engineers, 2025-04) Aguirre, Matías; Vázquez Pérez, Sergio; León Galván, José Ignacio; García Franquelo, Leopoldo; Ingeniería Electrónica; TIC109: TecnologíaInterleaved converter configurations are a common solution for the charging of electric vehicles. Carrier phase shift is a common and important design element for these converters. Recent research shows that a proper regulation of the phase shift can improve the system performance. This requires more complex controllers and actuation capabilities. Finite Control Set Model Predictive Control (FCS-MPC) has the capability to manage multiple control. Recent research has managed to achieve a satisfactory switching frequency control through a period control approach (PCA) for a single power converter. However, it does not control the switching phase required for an interleaved operation with parallel converters. This paper presents the design and implementation of a switching phase control for PCA-FCS-MPC, allowing the operation of an interleaved configuration. The performance is evaluated for different operating point through experimental validation.Ponencia Gain Scheduling PI Voltage Control of Three-phase AC/DC Power Converters(Springer Nature, 2025-04) Rodríguez Rubio, Francisco; Vázquez Pérez, Sergio; Castaño Castaño, Luis Fernando; Carrasco Solís, Juan Manuel; Ortega Linares, Manuel Gil; Ingeniería Electrónica; Ingeniería de Sistemas y Automática; Ministerio de Ciencia e Innovación (MICIN). España; TIC109: Tecnología; TEP201: Ingeniería de Automatización, Control y RobóticaThis paper present a dc-Link voltage regulation strategy for a two-Level three-phase grid-connected power converter. Control objectives for this system are regulating the dc-link capacitor voltage to a user define set point and, tracking the grid current reference to inject or absorb the requested instantaneous active and reactive power. The proposed voltage controller has a PI Control structure, with adaptation of the gains depending on the observed error. In this way, the monitoring of the voltage reference can be intelligently optimized.Ponencia Feed-forward Technique to Emulate Natural Sampling Method for Cascaded H-bridge Converters(Institute of Electrical and Electronics Engineers, 2023-11) Márquez Alcaide, Abraham; Vázquez Pérez, Sergio; Aguilera, Ricardo P.; Kouro, Samir; León Galván, José Ignacio; García Franquelo, Leopoldo; Ingeniería Electrónica; Ministerio de Ciencia e Innovación (MICIN). España; TIC109: TecnologíaPhase-shifted pulse width modulation (PS-PWM) is one of the preferred modulation strategies for cascaded H-bridge (CHB) converters due to its excellent harmonic performance. Nevertheless, this modulation strategy needs a fast sampling frequency, which can increase with the number of H-bridge sub-modules (SMs). Moreover, the advantages related to the harmonic content of the output voltages are usually lost for applications that require unbalanced operation conditions regarding SM power or voltage references, such as solar PV or battery energy storage systems. This work proposes a feed-forward compensation technique that reduces the sampling frequency to two times the carrier frequency while maintaining the good harmonic performance of the CHB output voltages. Simulation results are carried out to compare and demonstrate the superior performance of the proposed technique.Ponencia Experimental Analysis of K-Best Sphere Decoding Algorithm for LPH-FCS-MPC(Institute of Electrical and Electronics Engineers, 2022-10) Zafra, Eduardo; Vázquez Pérez, Sergio; Márquez Alcaide, Abraham; García Franquelo, Leopoldo; Pérez, Emilia; Ingeniería Electrónica; Ministerio de Ciencia e Innovación (MICIN). España; Junta de Andalucía; Ministerio de Ciencia, Innovación y Universidades (MICIU). España; TIC109: TecnologíaFinite control set model predictive control (FCS-MPC) with long prediction horizon (LPH-FCS-MPC) is becoming a great option for the control of power conversion systems. In contrast to short prediction horizon FCS-MPC, extending the prediction horizon length renders important steady-state improvements as the harmonic distortion and/or the switching frequency can be considerably reduced, for a more efficient operation of the power converter. The main disadvantage is that practical application of these strategies is still limited due to computational costs. In this work, a recently proposed hardware K-best sphere decoding algorithm (K-best SDA) is further analyzed and verified through experiments in an uninterruptible power supply (UPS) system. The results indicate the efficiency of the algorithm, enabling longer prediction horizons and better control performance in comparison with the conventional SDA.Ponencia DC-Link Voltage Regulation of Grid-Connected Converters Using Linear Disturbance Observer(Institute of Electrical and Electronics Engineers, 2022-12) Luo, Wensheng; Shi, Tingyu; Vázquez Pérez, Sergio; Wang, Zilin; Wu, Ligang; García Franquelo, Leopoldo; Ingeniería Electrónica; Ministerio de Ciencia e Innovación (MICIN). España; TIC109: TecnologíaIn this paper, a disturbance observer based control strategy is proposed to regulate the dc-link voltage of three-phase two-level pulse-width-modulation active-front-end rectifiers. In the voltage regulation loop, a linear disturbance observer is designed to improve the system performance. The load connected to the dc-link capacitor is considered as an external disturbance and the observer is used to estimate its value. The estimated disturbance is compensated to the PI controller. Simulations are carried out to verify the effectiveness and advantage of the proposed control strategy. Three different loads have been provided to test the robustness of the control strategy. Simulation results show that the proposed control strategy improves the transient response of the dc-link voltage, meanwhile maintains the steady-state performance in term of the output current total harmonic distortion, and has strong robustness against the external load variation.Ponencia Grid-Connected Inverter Control Via Linear Parameter-Varying System Approach(Institute of Electrical and Electronics Engineers, 2022-12) Luo, Wensheng; Li, Shuhao; Vázquez Pérez, Sergio; Du, Jinqian; Wu, Ligang; García Franquelo, Leopoldo; Ingeniería Electrónica; Ministerio de Ciencia e Innovación (MICIN). España; TIC109: Tecnologíahis paper is concerned with the controller design for grid-connected inverter facing parameter variation and stochastic perturbation. Considering these two factors, a stochastically perturbed linear parameter varying (LPV) system for the inverter is formulated, upon which the stability analysis and controller synthesis have been conducted. Parameter dependent sufficient conditions have been obtained to guarantee the asymptotical and exponential mean square stability, with which the asymptotical and exponential controllers are designed respectively. A two-level three-phase inverter is used to verify the effectiveness of proposed theories. Simulation results show that both the controllers are effective under parameter variation and stochastic perturbation, and the exponential controller performs better than the asymptotical controller.Ponencia Stability-Oriented Prediction Horizons Design of Generalized Predictive Control for DC/DC Boost Converter(Institute of Electrical and Electronics Engineers (IEEE), 2024-05) LI, Yuan; Sahoo, Subham; Vázquez Pérez, Sergio; Zhang, Yichao; Dragicevic, Tomislav; Blaabjerg, Frede; Ingeniería Electrónica; TIC109: TecnologíaThis paper introduces a novel approach in designing prediction horizons on a generalized predictive control for a DC/DC boost converter. This method involves constructing a closed-loop system model and assessing the impact of different prediction horizons on system stability. In contrast to conventional design approaches that often rely on empirical prediction horizon selection or incorporate non-linear observers, the proposed method establishes a rigorous boundary for the prediction horizon to ensure system stability. This approach facilitates the selection of an appropriate prediction horizon while avoiding excessively short horizons that can lead to instability and preventing the adoption of unnecessarily long horizons that would burden the controller with high computational demands. Finally, the accuracy of the design method has been confirmed through experimental testing. Moreover, it has been demonstrated that the prediction horizon determined by this method reduces the computational burden by 10\%-20\% compared to the empirically selected prediction horizon.Ponencia Experiencia de homologación y adaptación del proyecto docente de la asignatura circuitos electrónicos(2008) Martínez Heredia, Juana María; Colodro Ruiz, Francisco; Ingeniería ElectrónicaEl objetivo de este trabajo es la adaptación progresiva del proyecto docente de la asignatura Circuitos Electrónicos al Espacio Europeo de Educación Superior. Se ha participado en primer lugar en la Convocatoria 2006/2007 de Homologación y Acreditación de Proyectos Docentes de la Universidad de Sevilla, elaborando una primera versión del proyecto. Tras obtener la homologación, y con esa experiencia, se ha elaborado la guía docente en créditos ECTS para el actual curso académico 2007/2008.Ponencia Elaboración de contenidos y tareas docentes en el entorno de la plataforma de enseñanza virtual webct para la asignatura Circuitos Electrónicos(2008) Martínez Heredia, Juana María; Colodro Ruiz, Francisco; Ingeniería ElectrónicaEn el actual contexto en el que las Universidades españolas se ven inmersas, es necesario ir introduciendo elementos de innovación educativa en la tradicional clase presencial. Este documento describe la elaboración de contenidos y tareas docentes en la plataforma de enseñanza virtual de la Universidad de Sevilla para el proceso de enseñanza-aprendizaje de la asignatura Circuitos Electrónicos. Los resultados han sido satisfactorios y marcan el camino a seguir en los próximos años.Ponencia Class AB output stages for low voltage CMOS opamps with accurate quiescent current control by means of dynamic biasing(LIRMM, Université Montpellier II, 2000) Torralba Silgado, Antonio Jesús; González Carvajal, Ramón; Ramírez Angulo, Jaime; Martínez Heredia, Juana María; Pérez Vega-Leal, Alfredo; Ingeniería ElectrónicaTwo new class AB output stages for CMOS opamps are proposed with accurate quiescent current control. The second proposed stage also provides accurate control of the minimum current through the output transistors. The proposed stages can be operated with a supply voltage close to a transistor threshold voltage. A dynamic biasing scheme allows them to operate in a wide range of supply voltages. Simulation results are provided that are in good agreement with expected values.Ponencia A four quadrant, 1.4V Supply, wide, swing, high frequency CMOS analogue multiplier with high current efficiency(LIRMM, Université Montpellier II, 2000) Ramírez Angulo, Jaime; González Carvajal, Ramón; Martínez Heredia, Juana María; Ingeniería ElectrónicaA four quadrant analogue multiplier that operates with a 1.4V single supply and 0.6V peak-peak input signals on both inputs is presented. It is based on a new low-voltage class AB differential amplifier with quiescent current control Current Efficiency and Random Distortion are introduced as quality factors to evaluate the performance of the analog multiplier. The multiplier presented here is characterized by a high current efficiency (50%), high bandwidth (40MHz) and a high linearity (4% distortion). Experimental results of a test chip are shown that verify low-voltage, low distortion and wide swing operation. Post +layout simulations are presented that verify its wide bandwidth characteristics.Ponencia A 1.5V linear transconductor with wide bandwidth and wide input and output signal swings [DCIS 2000](LIRMM, Université Montpellier II, 2000) Ramírez Angulo, Jaime; González Carvajal, Ramón; Torralba Silgado, Antonio Jesús; Martínez Heredia, Juana María; Ingeniería ElectrónicaA linear voltage-to-current converter that operates with a single supply voltage close to a transistor's threshold voltage and that has almost rail-rail input and output swings is introduced. The circuit is conceived as an input interface for current-mode signal processing systems. It also has applications for the implementation of other very low-voltage circuits like instrumentation amplifiers and common mode feedback control circuits. Simulations and experimental results of a test chip prototype in 1.2pm CMOS technology are presented that verify functionality of the proposed circuit and its broadband characteristics.Ponencia Analog Squaring Circuit based on Time Encoding(2009) Colodro Ruiz, Francisco; Torralba Silgado, Antonio Jesús; Mora Jiménez, José Luis; Martínez Heredia, Juana María; Ingeniería Electrónica; Ministerio de Ciencia Y Tecnología (MCYT). EspañaAccurate analog squarers are required for different signal processing functions, like amplitude modulation, frequency shifting, signal power estimation, and neural and image processing. Transistor-level analog squarers suffer from limited accuracy, especially in modern deep submicron technology where the squared law of the MOS transistor in the saturation region is no longer valid. Based on the Asynchronous Sigma-Delta Modulator (ASDM), a new circuit which provides the squared value of the input signal is proposed. In this paper, the proposed analog squarer is studied, and the analytical results are validated by simulation in the time domain. The effect of analog imperfections on the accuracy of the squarer is also analyzed showing that a high Signal to Noise plus Distortion Ratio can be obtained for typical values of the mismatch and up to frequencies near half the maximum frequency of the ASDM limit cycle.Ponencia Programmable ASICs for model predictive control(Institute of Electrical and Electronics Engineers, 2015-06-18) Martínez Rodríguez, Macarena Cristina; Brox Jiménez, Piedad; Tena Sánchez, Erica; Acosta Jiménez, Antonio José; Baturone Castillo, María Iluminada; Electrónica y Electromagnetismo; Tecnología Electrónica; Ministerio de Economía y Competitividad (MINECO). España; Consejo Superior de Investigaciones Científicas (CSIC)Two configurable and programmable ASICs that implement piecewise-affine (PWA) functions have been designed in TSMC 90-nm technology in response to industry demands for embedded, fast response time, and low power solutions for Model Predictive Control (MPC). An automated model-based design flow can extract the parameters necessary for the configuration and the programming of both ASICs. Two application examples in the automotive field illustrate the design flow and the behavior of the ASICs.Ponencia GreeAODV: An Energy Efficient Routing Protocol for Vehicular Ad Hoc Networks(Springer Nature, 2018-07-06) Baker, Thar; García-Campos, José Manuel; Gutiérrez Reina, Daniel; Toral, S. L.; Tawfik, Hissam; Al-Jumeily, Dhiya; Hussain, Abir; Ingeniería Telemática; Ingeniería ElectrónicaVANETs allow communications among vehicles, and vehicles with the roadside infrastructure, namely Vehicle-to-Vehicle (V2V) and Vehicle-to-Infrastructure (V2I) respectively, in smart cities. Due to the number of vehicles, the infrastructure elements, the size of scenarios and mobility of nodes, the energy consumed to discover routes between source and destination nodes and to transmit applications packets can be high. In this paper, we propose a GreeDi based reactive routing protocol aimed at selecting the most efficient route in terms of energy consumption between two nodes in VANETs. The route selection is based on the power consumed by the intermediate nodes between the source and destination nodes. The proposed algorithm has been evaluated in city map-based VANET scenarios. The simulation results confirm that the proposed algorithm outperforms the original AODV in terms of power consumption. Furthermore, a computational Intelligence driven approach to address the challenge of energy efficient routing optimisation, is discussed.Ponencia Towards a 3D-Printed and Autonomous Culture Platform Integrated with Commercial Microelectrode Arrays(IEEE, 2021-06-09) Urbano Gámez, Jesús David; Aracil Fernández, Carmen; Perdigones Sánchez, Francisco; Fontanilla Martín, José Antonio; Quero Reboul, José Manuel; Ingeniería ElectrónicaBiologists and physicians need tools that may study the biological mechanisms involved in the degeneration of tissues to understand and slow down the effects of the diseases. In this way, systems able to maintain a culture in its appropriate conditions, even long term, and compatible with electro-stimulation and acquisition, open a wide field of applications. The proposed design is a low-cost portable system that accomplishes all these requirements. It is based on the integration of an MEA with electronic systems, and a culture platform, offering the possibility of electro-stimulation of a cell or tissue culture and studying its electrical activity.Ponencia Radiation environment emulation for VLSI designs: a low cost platform based on xilinx FPGA’s(Institute of Electrical and Electronics Engineers (IEEE), 2007-06) Nápoles Luengo, Javier; Guzmán-Miranda, Hipólito; Aguirre Martínez, M.A.; Tombs, Jonathan Noel; Muñoz Chavero, Fernando; Baena Lecuyer, Vicente; Torralba Silgado, Antonio Jesús; García Franquelo, Leopoldo; Ingeniería Electrónica; TIC192: Ingeniería ElectrónicaAs technology shrinks, critical industral applications have to be designed with special care. VLSI circuits become more sensitive to ambient radiation: it affects to the internal structures, combinational or sequential elements. The effects, known as Single Event Effects (SEEs), are modeled as spontaneous logical changes in a running netlist. They can be mitigated at netlist design level by means of inserting massive redundancy logic in the IC memory elements, as well as designing robust deadlock-free state machines. Current techniques for the analysis and verification of the protection logic for VLSI are inefficient and expensive, lacking either speed or analysis. This paper presents the FT-UNSHADES system. This system is a low cost emulator focused on bit-flip insertion and SEE analysis at hardware speed, based on a Xilinx Virtex-IT. Radiation tests are emulated in a highly controlled process, using a non-intrusive method. As a result the system can insert and analyse at least 80K faults per hour in a system with 2 million test vectors