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Biggiero L.,University of Naples Federico II | Corapi G.,University of Naples Federico II | D'Avanzo S.,Ente Autonomo Volturno Campania EAV | Murolo F.,SEPSA
Ingegneria Ferroviaria | Year: 2014

The benefit-cost analysis is one of the tools used to select investments in public infrastructure and facilities maximizing the community welfare. Aiming to increase quality and frequency of the rail service, some measures have been designed to upgrade the control system of both the lines. Now the control systems are different on the two lines. Cumana line is managed by a remote control located in Montesanto Station, electric block along the line, central electric equipment in the stations. Circumflegrea line is managed by a local controller in each station and a telephonic system between any couple of stations. Source


Martinez C.,Charles III University of Madrid | Lazaro A.,Charles III University of Madrid | Quesada I.,Charles III University of Madrid | Lucena C.,Charles III University of Madrid | And 2 more authors.
Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC | Year: 2012

In this paper an optimized modulation technique is presented for low THD voltage generation onboard rolling stock by means of a voltage source inverter (VSI). The aim of the proposal is to minimize the output voltage THD through the optimization of the harmonic spectrum distribution. The optimal switching pattern has been obtained by means of an optimization method. Regarding conventional modulation techniques such as selective harmonic elimination technique, sinusoidal PWM with third harmonic injection or space vector PWM, the proposed optimized modulation presents lower THD and an extended modulation index because it can operate in the overmodulation region even with lower THD. Theoretical performance has been validated in a scaled-down prototype. © 2012 IEEE. Source


Martinez-Garcia S.,Dieec Etsii Uned | Dede-Garcia E.J.,GH Electrotermia S.A. | Campo-Rodriguez J.C.,University of Oviedo | Bradley P.J.,International Electronics S.A. | And 4 more authors.
Dyna (Spain) | Year: 2010

Power Electronics has been gaining relevance in countless fields throughout industry, defence, transport, public buildings, communications, computing, home automation and electromedical equipment. Although usually unnoticed, due to its subsidiary role of supplying energy to electrical equipment and systems, its applications and implantation are continuously growing. The power range is very wide, covering from over five thousand megawatts in High Voltage DC Transmission to a few tenths of a watt in micro-power converters for mobile telephones and personal electro-medical devices. Its multidisciplinary character and universality makes of power electronics a technological synergic vortex where semiconductor physics, electrical engineering, thermal management, control theory, industry communications, transport and most industrial disciplines are brought together. This paper, first of two, covers general aspects of Power Electronics and its applications in the high power range. Source


Martinez-Garcia S.,Dieec Etsii Uned | Dede-Garcia E.J.,GH Electrotermia S.A. | Campo-Rodriguez J.C.,University of Oviedo | Bradley P.J.,International Electronics S.A. | And 4 more authors.
Dyna (Spain) | Year: 2010

In the previous paper, published last month [1], the general aspects of Power Electronics and the high power range applications were reviewed. The many existing applications throughout industry, transport, public buildings, communications, computing, home automation and electro-medical devices, mainly in the role of feeding power to equipment and systems, were presented. As shown, the power range is very wide, covering from over five thousand megawatts in High Voltage DC Transmission to a few tenths of a watt in micro-power converters for mobile telephones and electro-medical devices. In this second and last paper the medium and low power range applications, normally with important weight and size restrictions, are reviewed. Source


Quesada I.,Charles III University of Madrid | Martinez C.,Charles III University of Madrid | Raga C.,Charles III University of Madrid | Lazaro A.,Charles III University of Madrid | And 3 more authors.
Przeglad Elektrotechniczny | Year: 2012

The Harmonic Cancellation Technique (HCT) is a modulation technique able to reduce the output voltage THD in Auxiliary Railway Power Supplies which supply both a linear and a well-known non linear load, helping the manufacturer to achieve the output voltage THD specifications. It is based on the pre-distortion of the inverter output voltage, through the analytical determination of the IGBTs switching events. So, along this paper the limitations of the available solutions space for the HCT is presented, along with some design parameters which may help to enlarge it. Source

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