Universitat Politècnica de Catalunya
Now showing items 1-20 of 154
(English) Lithium-ion cells are commonly used in a variety of applications today. Depending on the power and energy requirements of the application, several cells are interconnected. Due to intrinsic and extrinsic factors, ...
Distributed generation (DG) with a converter interface to the power grid is found in many of the green power resources applications. This dissertation describes a multi-objective control technique of voltage source ...
(English) Reliable and uninterrupted power supply is crucial for modern societies. Therefore, the minimization of the power outages' duration is a priority for the power system operators. This thesis aims to contribute to ...
Virtual inertia is known as an inevitable part of the modern power systems. Recent trend of research is oriented in different methods of emulating virtual inertia in different part of the systems. This dissertation is ...
Electric vehicles (EVs) are attractive comparted to internal combustion engine powered vehicles due to several benefits, including low emissions, higher efficiency, less maintenance costs, stronger acceleration or lower ...
Automotive applications focus to develop drive-train technologies with higher energy efficiency and lower environmental impact. Electric and hybrid vehicles are gaining popularity since they fulfill these requirements . ...
Wind power has emerged as one of the most promising renewable energy sources. The very penetration levels of wind energy in power systems have altered several aspects of power system operation, such as system stability. ...
lt's a well-known fact that the flywheel stores energy inside, and this energy is proportional to the rotational speed and the moment of inertia. lf the moment of inertia increases, the energy increases in the same proportion ...
En el presente trabajo se pretende analizar el consumo de potencia reactiva y la distorsión armónica en el puente trifásico con carga activa resistivo-inductiva, con el objeto de disminuir ambas vertientes de contaminación ...
Terrestrial Gamma ray Flashes (TGFs) have been known since 20 years ago, but since the first moment of the discovery it was clear that they were related to lightning and thunderstorms. The latest studies revealed that TGFs ...
The object of this thesis is to analyze the evolution of railway interoperability and safety in Europe in the period 1991-2011. This pretends to assess what has been the legislative process at EU level in the last 20 ...
The phase-locked loop (PLL) is an element of a grid-connected converter system, which provides phase angle and frequency measurements of the grid voltage. The PLL takes care of control the synchronization with the grid ...
Últimamente se ha incrementado considerablemente la utilización de la inteligencia artificial en los campos de la electrónica de potencia y de los sistemas de control de la velocidad y del posicionamiento. Estos métodos, ...
(Castellà) Este trabajo de investigación se centra en la caracterización de las emisiones ópticas generadas por diversos procesos de rayos, con el objetivo de mejorar la interpretación de las detecciones ópticas realizadas ...
Este trabajo se dedica a la búsqueda de soluciones que permitan mejorar el comportamiento de los filtros activos de potencia en derivación que trabajan en redes trifásicas de cuatro hilos, incluso cuando se den condiciones ...
`Today, the industry is facing a new way of organizing production, lndustry 4.0, which aims to create smart factories that improve the adaptability of the means of production, not only to produce more and better with lower ...
The nature of the SRM (Switched Reluctance Motor) makes this type of motor one of the candidates to investigate over the next few years. Its mechanical development is simple and inexpensive, but requires an electronic ...
En los últimos años, investigadores de diferentes laboratorios y universidades han mostrado un interés creciente en el estudio del motor de reluctancia autoconmutado (SRM). Aunque sus aplicaciones industriales son escasas ...
In this study two electromagnetic analytical models have been developed. From this models the main magnetic and mechanics characteristics are obtained, and also permit getting the principal dimensions of the LSRM. From ...
La existencia de máquinas eléctricas industriales desde finales del siglo XIX implica que es un sector de desarrollo maduro donde parecen difíciles nuevos conceptos de máquina, a no ser que el desarrollo de nuevos materiales ...
