Universitat Politècnica de Catalunya
Ara mostrant els elements 77-96 de 157
Este trabajo se enmarca dentro de la calidad del suministro de energía eléctrica y, en concreto, en el efecto que producen los huecos de tensión en las máquinas de inducción y en los transformadores trifásicos.<br/>En ...
According to reliable statistics, electrical fire ignition sources have a notable impact regarding the generation of fires and explosions. Electrical equipment and installations can also be the victims of fire. This is due ...
Speckle noise appears when coherent illumination is employed, as for example Laser, Synthetic Aperture Radar (SAR), Sonar, Magnetic Resonance, X-ray and Ultrasound imagery. Backscattered echoes from the randomly distributed ...
(English) The rapid advancement of digitalization, combined with the integration of renewable generation and the development of information and communication technologies within the distribution network, is accelerating ...
Climate change is real. Global human population is growing as never before. Natural resources are limited. These factors have taken different countries to embrace new pathways in order to fulfill the energy needs of their ...
The boom experienced by renewable sources in recent years has changed their consideration as a marginal component of the electrical system mix into a major player with an important role in the demand coverage in many ...
The increase in the energy consumption of cities forecasted for the coming years makes these urban areas tend to be representative of the energy sustainability of their countries. In this sense, on the basis of the analysis ...
High Voltage Direct Current (HVDC) is a power electronics -based technology that enables the transmission of large amounts of power over long distances, the integration of remote offshore wind power to the main land, and ...
The scope of this thesis is related to the enhancement of the operation of distributed generators (DGs) based on renewable energies (REs) when connected to the conventional grid network. Synchronization of those DGs, i.e. ...
(English) EspinarThis thesis presents the overall state of the art of electric vehicles in terms of the technology of the main concepts in an electric powertrain: batteries, traction inverters, electric machines, and control ...
ESTA TESIS HA TENIDO POR OBJETO EL DISEÑO Y REALIZACION DE ESTRATEGIAS DE REALIMENTACION PARA REGULADORES CONMUTADOS CONTINUA-CONTINUA, QUE CONTEMPLAN LOS SIGUIENTES ASPECTOS: A) MODELACION LINEAL. EFECTO DE LA REALIMENTACION ...
La tesis estudia el problema del flujo armónico de cargas desde dos puntos de vista. La formulación del problema del flujo armónico de cargas analizando los distintos métodos existentes en la bibliografía y desarrollando ...
The main bulk of electric power systems use a three¿phase configuration with an alternating current flow. Pursuing the optimal performance of these networks and avoiding possible technical problems, it is preferred ...
The aim of this doctoral thesis is to analyse the dynamic behaviour of the doubly-fed induction generator exposed to voltage sags. This electrical machine is mainly used in variable-speed wind turbines. Due to the noticeable ...
This Doctoral Thesis is framed within the generic issue of power quality and more specifically in the study and harmonic characterization of low power compact fluorescent lamps (CLFs) with integrated ballast, also called ...
As a continuation of the work done by the QSE (Electrical Supply Quality) research group at the UPC (Polytechnic University of Catalonia) on non-linear load modelling to determine harmonic distortion in electrical power ...
Debido al aumento de la presencia de dispositivos no lineales en los Sistemas Eléctricos de Potencia existe un creciente interés en la formulación y resolución del flujo de cargas en presencia de armónicos. <br/>El tratamiento ...
El análisis armónico de redes eléctricas se utiliza para el estudio de los efectos de las cargas no lineales sobre las magnitudes y formas de onda de las tensiones y corrientes eléctricas. Dado el constante incremento de ...
El objetivo principal de la tesis es la aplicación del método de control directo del par para un motor de inducción utilizando inversores de diferentes estructuras que parecen ofrecer algunas ventajas, bajo ciertas ...
de la Tesis Doctoral<br/>Introducción<br/>Existen muchas causas por las que se pueden originar sobretensiones en una red de potencia. La clasificación más aceptada distingue tres tipos de sobretensiones: Sobretensiones ...
