Ponencias (Ingeniería Electrónica)
URI permanente para esta colecciónhttps://hdl.handle.net/11441/11359
Examinar
Envíos recientes
Ponencia Using Semiconductor Photodiodes as Detector Element for Solar Radiation Measurements(Center for Sensors, Instruments and System Development - UPC, 2025) Jerez, Manuel; Carballar Rincón, Alejandro; Granado Romero, Joaquín; Ingeniería Electrónica; Ministerio de Ciencia e Innovación (MICIN). España; European Union (UE)An innovative pyrheliometer configuration utilizing optical fiber for solar radiation capture requires a detector element for the optical power measurements. In this sense, three distinct photodiodes—two silicon-based and one indium gallium arsenide (InGaAs)— are evaluated. Specifications of each photodetector are analyzed, including their spectral response, response time, and thermal characteristics, as well as the desired specifications for the application, also compared with a thermopile. The characteristics of semiconductor photodiodes are shown to be more appropriate for the application compared to thermopiles, which are conventionally utilized in radiometric instrumentation. Experimental results compare the three photodiodes against a commercial pyrheliometer, demonstrating that the system's behavior changes substantially depending on the type of photodetector employed. Among the three photodiodes investigated, one of the silicon-made devices exhibits performance most closely aligned with the commercial pyrheliometer, suggesting its potential as an optimal detection element in this novel proposal for radiometric measurements.Ponencia Medida de flujo solar concentrado en simulador solar basado en fibra óptica y fotodiodo(Center for Sensors, Instruments and System Development - UPC, 2025) Jerez, Manuel; Carballar Rincón, Alejandro; Conceiçao, Ricardo; González Aguilar, José; Rández, Xabier; Itoiz, Olaia; Ingeniería Electrónica; Ministerio de Ciencia e Innovación (MICIN). España; European Union (UE)Extreme operating conditions encountered in solar receivers of Concentrated Solar Thermal (CST) power plants, such as elevated temperatures, high solar fluxes, and thermal cycling, present substantial challenges for conventional sensors. Optical fibers present a viable alternative for solar flux measurement in these harsh environments; however, their long-term performance and degradation mechanisms necessitate comprehensive investigation and characterization. This study presents two tests performed using high-flux solar simulators to explore the capabilities of optical fibers for measuring concentrated solar flux in an environment at temperatures exceeding 500 °C and fluxes above 1.1 MW/m². Various fibers were tested and then analyzed using Scanning Electron Microscopy (SEM) to evaluate their structural integrity and material degradation. The results highlight significant coating deterioration, fiber retraction, and thermal-induced stress effects, all of which adversely affect measurement accuracy and reliabilityPonencia Evaluación de FBGs como sensores de alta temperatura en aplicaciones de energía solar concentrada(Center for Sensors, Instruments and System Development - UPC, 2025) Jerez, Manuel; Carballar Rincón, Alejandro; Granado Romero, Joaquín; Ingeniería Electrónica; Ministerio de Ciencia e Innovación (MICIN). España; European Union (UE)The utilization of femtosecond-laser inscribed and regenerated Fiber Bragg Gratings (FBGs) is proposed, and an experimental comparison of both technologies is conducted to assess their potential as temperature sensors in Concentrated Solar Power (CSP) applications, where temperatures exceeding 1000°C are prevalent. Such environments demand not only high precision but also long-term measurement stability. The results indicate that femtosecond-laser inscribed FBGs exhibit superior accuracy and demonstrate enhanced reliability under extreme conditions. However, recalibration is required to optimize their performance and robustness at the higher temperature ranges encountered in these applications.Ponencia A Statistical Approach for Calibrating High Temperature Femtosecond-Laser Inscribed Fiber Bragg Grating(Optical Publishing Group, 2024) Jerez, Manuel; Granado Romero, Joaquín; Carballar Rincón, Alejandro; Ingeniería Electrónica; Ministerio de Ciencia e Innovación (MICIN). España; European Union (UE)An end-to-end calibration method is proposed for high-temperature FBGs sensors working up to 700 Celsius. A fourth-order polynomial function reduces absolute measurement errors below 2.5 Celsius along the full operation range.
Ponencia Evaluating Fiber Bragg Grating Technologies for High Temperature Sensing in Concentrated Solar Power Plants(Optical Publishing Group, 2025) Jerez, Manuel; Granado Romero, Joaquín; Carballar Rincón, Alejandro; Ingeniería Electrónica; Ministerio de Ciencia e Innovación (MICIN). España; European Union (UE)Femtosecond-inscribed versus regenerated FBGs are compared for temperature sensing in Concentrated Solar Power applications. Experiments up to 1000°C demonstrate fs-FBGs’ superior performance, requiring recalibration for optimal CSP integration.Ponencia Damage in Optical Fiber-based Sensors in Extreme Environments For High Flux Solar Measurements(Optical Publishing Group, 2025) Jerez, Manuel; Carballar Rincón, Alejandro; Conceição, Ricardo; González-Aguilar, José; Ingeniería Electrónica; Ministerio de Ciencia e Innovación (MICIN). España; European Union (UE)Physical damage in optical fibers when acting as irradiance probes in a high-flux solar simulator is analyzed through SEM. Coating degradation and relative displacement of the fiber due to local intense heat fluxes are observed.Ponencia Concentrated Solar Flux Measurement in a High Flux Solar Simulator Using an Optical Fiber Based Radiometer(Optical Publishing Group, 2025) Jerez, Manuel; Carballar Rincón, Alejandro; Conceição, Ricardo; González-Aguilar, José; Ingeniería Electrónica; Ministerio de Ciencia e Innovación (MICIN). España; European Union (UE)A novel device for measuring concentrated solar fluxes using high-temperature optical fibers and photodiode-based radiometers is evaluated using a high-flux solar simulator based on Xenon arc lamps, showcasing promising results.Ponencia Optical Fiber as Solar Radiation Collector for Radiometric Measurements(TIB Open Publishing, 2025-08) Jerez, Manuel; Carballar Rincón, Alejandro; Granado Romero, Joaquín; Ingeniería Electrónica; Ministerio de Ciencia e Innovación (MICIN). España; European Union (UE)The feasibility of using optical fibers as solar radiation collectors in radiometric measurement devices and instruments is discussed, taking into account the various characteristics of the fibers that affect the measurements, with a special focus on numerical aperture. The discussion is supported by various results using the fiber to measure direct normal irradiance.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.