Universitat Politècnica de Catalunya
Mostrando ítems 1-20 de 136
(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 ...
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 ...
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 ...
(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 ...
de Tesis Doctoral<br/><br/>Nos proponemos plantear un método de cálculo que nos permita la construcción de un motor de inducción magnetohidrodinámica, la impulsión de fluidos conductores por campos magnéticos.<br/><br/>El ...
La distorsión armónica no es un fenómeno nuevo en los sistemas eléctricos de potencia, pero desde principios de los años setenta se ha convertido en un problema de creciente actualidad debido al incremento considerable de ...
Este trabajo se dedica a analizar los diferentes elementos y estructuras de los filtros híbridos paralelo, aplicados a redes trifásicas de potencia. Y dentro de este campo, se concentra en el desarrollo de filtros híbridos ...
