Universitat Politècnica de Catalunya
Now showing items 84-103 of 157
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 ...
Nowadays, power production, reliability, quality, efficiency and penetration of renewable energy sources are amongst the most important topics in the power systems analysis. The need to obtain optimal power management and ...
This thesis deals with the integration of photovoltaic energy into the electrical grid. For this purpose, two main approaches can be identified: the interconnection of large scale photovoltaic power plants with the ...
Since the last quarter of the last century, and due to the spectacular increment of the connection of electronic loads to the electric system, it has been extraordinarily increased the existence of non-sinusoidal currents ...
On the way towards a low carbon electricity system, flexibility has become one of the main sources for achieving it. Flexibility can be understood as the ability of a power system to cope with the variability and uncertainty ...
(English) In lithium-ion batteries, depending on the requirements, many individual cells are connected in series and parallel. Despite very similar individual cell parameters after production, they can develop differently ...
de la tesis:<br/><br/>Hacia el motor superconductor: estudio de las interacciones entre un estator convencional y un rotor superconductor<br/><br/>El desarrollo de superconductores de alta temperatura (HTSC) de gran corriente ...
As a continuation of the work done by the QSE (Electrical Supply Quality) research group at the UPC (Polytechnic University of Catalonia) on harmonic load flow in electric power networks, this thesis aims to study existing ...
