Now showing items 100-119 of 206

    Efficient multiprocessing architectures for spiking neural network emulation based on configurable devices 

    Sánchez Rivera, Giovanny (Date of defense: 2014-06-12)

    The exploration of the dynamics of bioinspired neural networks has allowed neuroscientists to understand some clues and structures of the brain. Electronic neural network implementations are useful tools for this exploration. ...

    Electrical and magnetic faults diagnosis in permanent magnet synchronous motors 

    Urresty Betancourt, Julio César (Date of defense: 2012-09-21)

    Permanent magnet synchronous motors (PMSMs) are an alternative in critical applications where high-speed operation, compactness and high efficiency are required. In these applications it is highly desired to dispose of ...

    Eliminación selectiva de armónicos en convertidores pwm continua-alterna mediante la transformada de walsh 

    Vicente Rodrigo, Jesús (Date of defense: 2012-03-09)

    La síntesis de tensión alterna a partir de continua mediante la generación de señales de modulación de anchura de pulsos (PWM) representa un método económico y eficaz de realización de dicha transformación, ya que se ...

    Elininación de perturbaciones de baja frecuencia en redes eléctricas mediante compensadores estáticos 

    Lamich Arocas, Manuel (Date of defense: 2015-02-27)

    The increasing use of DC electronic devices connected to mains lead to numerous complications of harmonic distortion and efficiency reduction in electrical energy transmission. These devices behave as a marked non linear ...

    Enabling the internet of things through energy harvesting : a circuit-aware system synthesis-oriented analysis approach 

    Gomez Cid-Fuentes, Raül (Date of defense: 2016-07-22)

    Powering wireless sensors has become a key challenge to enable the Internet of Things vision. A common approach to achieve this is to use Energy Harvesting. By means of this technology, sensors have access to an unlimited ...

    Energy harvesting from human passive power 

    Mateu Sáez, Maria Loreto (Date of defense: 2009-06-05)

    Las tendencias en la tecnología actual permiten la reducción tanto en tamaño como en potencia consumida de los sistemas digitales complejos. Esta disminución en el tamaño y el consumo da lugar al concepto de dispositivos ...

    Energy management in collaborative power electronics-based microgrid integrated with renewable energies 

    Salehi, Navid (Date of defense: 2023-02-08)

    (English) This thesis is introduced the research performed on microgrid applications, especially in cooperative operating mode. The research is conducted considering two main challenging aspects of microgrid operation over ...

    Energy management strategies based on fuzzy logic control for grid-tied domestic electro-thermal microgrid 

    Arcos Avilés, Diego Gustavo (Date of defense: 2016-06-13)

    The environmental and economic benefits related to the reduction of both carbon dioxide emission and transmission losses have made distributed renewable generation systems became a competitive solution for future power ...

    Energy processing by means of power gyrators 

    Cid-Pastor, Ángel (Date of defense: 2005-07-18)

    En aquesta tesi doctoral es presenta un mètode sistemàtic per a la síntesi de giradors de potència. A partir d'aquest mètode s'han generat i classificat diverses estructures giradores. Cadascun d'aquests giradors, que poden ...

    Enhancement of defect diagnosis based on the analysis of CMOS DUT behaviour 

    Arumí i Delgado, Daniel (Date of defense: 2008-07-11)

    Les dimensions dels transistors disminueixen per a cada nova tecnologia CMOS. Aquest alt nivell d'integració complica el procés de fabricació dels circuits integrats, apareixent nous mecanismes de fallada. En aquest sentit, ...

    Estimació de velocitat per al control vectorial de motors d'inducció 

    Català López, Jordi (Date of defense: 2003-03-14)

    Gràcies als avenços de l'electrònica de potència, la microelectrònica i la teoria de control s'ha generalitzat l'ús dels controls vectorials del motor d'inducció en aplicacions industrials. Les prestacions d'aquests controls ...

    Estrategias de control para sistemas de generación distribuida durante huecos de tensión 

    Camacho Santiago, Antonio (Date of defense: 2015-07-17)

    The objective of this thesis is the development of control strategies for distributed generation systems during voltage sags. The proposed control strategies present different options to improve the behavior of inverters ...

    Estudio de la eficiencia energética en convertidores CC/CA utilizando multiplexado de interruptores y técnicas de control adaptativas 

    Pérez Delgado, Raúl (Date of defense: 2016-09-09)

    Electrical energy generation systems based on renewable energy sources have been promoted in recent years. The introduction of these systems has changed the centralized energy model to become a distributed energy model. ...

    Estudio de la variabilidad del ritmo cardíaco mediante técnicas estadísticas, espectrales y no lineales 

    García González, Miguel Ángel (Date of defense: 1998-10-23)

    El análisis de la variabilidad del ritmo cardíaco es una técnica no invasiva que permite la diagnosis y prognosis de cardiopatías y neuropatías. El ritmo cardíaco está modulado por diversos sistemas fisiológicos siendo el ...

    Estudio de la viabilidad de la estimación del grado de adherencia a estilos de vida saludables a partir de medidas cardíacas oportunistas 

    Ferrer Mileo, Víctor (Date of defense: 2019-10-11)

    In recent times, developed countries have experienced an increase of several diseases related to non-healthy lifestyles. Nevertheless, as an individual, it is difficult to know the degree of adherence to a healthy lifestyle ...

    Estudio e implementación de nuevas técnicas de modulación para la reducción de perturbaciones EMI en convertidores matriciales 

    Espina Masramon, Jordi (Date of defense: 2012-11-07)

    El procesamiento de la energía mediante convertidores electrónicos conmutados ha tomado una relevancia notable durante la última década, y presumiblemente será uno de los campos de la ingeniería con mayor proyección ...

    Evaluación no destructiva de estructuras de obra civil mediante métodos electromagnéticos 

    Juan Garcia, Pablo (Date of defense: 2011-04-08)

    Los métodos de evaluación no destructiva en el campo de la ingeniería civil suponen una alternativa a los métodos de control tradicionales. Disponer de técnicas que permitan obtener información relevante acerca de las ...

    Exploration of FDSOI back-biasing techniques to hinder cryptographic attacks based on leakage current 

    Palma Carmona, Kenneth (Date of defense: 2023-10-18)

    (English) Cryptography is the science that studies how to achieve secure communication between multiple parties. Under the assumption that any message transmitted is to be ultimately intercepted, the endeavors of cryptography ...

    Fabrication, characterisation and modelling of nanocrystalline silicon thin-film transistors obtained by hot-wire chemical vapour deposition. 

    Dosev, Dosi Konstantinov (Date of defense: 2003-03-31)

    Hot-wire chemical vapour deposition (HWCVD) is a promising technique that permits polycrystalline silicon films with grain size of nanometers to be obtained at high deposition rates and low substrate temperatures. This ...