Exploració per tema "Electric currents"
Ara es mostren els items 1-20 de 26
-
A modified voltage balancing sorting algorithm for the modular multilevel converter: Evaluation for staircase and phase-disposition PWM
(2014)
Text en actes de congrés
Accés restringit per política de l'editorialThis paper introduces a low complexity implementation of the voltage balancing sorting algorithm to reduce the switching frequency of the power devices in modular multilevel converters (MMCs). Two modulation techniques are ... -
A modified voltage balancing sorting algorithm for the modular multilevel converter: Evaluation for staircase and phase-disposition PWM
(2015-08-01)
Article
Accés obert -
A power calculation algorithm for single-phase droop-operated-inverters considering linear and nonlinear loads HIL-assessed
(2019-11-01)
Article
Accés obertThe active and reactive powers, P and Q, are crucial variables in the parallel operation of single-phase inverters using the droop method, introducing proportional droops in the inverter output frequency and voltage amplitude ... -
Analysis of ferroresonance effects in distribution networks with distributed source units
(2013)
Text en actes de congrés
Accés restringit per política de l'editorialThe connection of Distributed Generation (DG) units to existing networks may give rise to harmful effects on the network and the DG units itself. Therefore, due to increasing penetration of DG units, it is important to ... -
Circulating current injection methods based on instantaneous information for the modular multilevel converter
(Institute of Electrical and Electronics Engineers (IEEE), 2015-02-01)
Article
Accés obertThis paper studies different circulating current references for the modular multilevel converter. The circulating current references are obtained from the instantaneous values of the output current and modulation signal ... -
Comparación de técnicas de limitación de corriente en convertidores operando como fuentes de tensión conectados a una microrred eléctrica aislada trifásica
(Universitat Politècnica de Catalunya, 2022-10-27)
Projecte Final de Màster Oficial
Accés restringit per decisió de l'autorDesde hace tiempo, la red trifásica eléctrica y otras composiciones trifásicas, sufren de diferentes fallos eléctricos los cuales deben ser controlados. En el caso de este TFM, el fruto de estudio es la falla eléctrica ... -
Comparison of phase-shifted and level-shifted PWM in the modular multilevel converter
(Institute of Electrical and Electronics Engineers (IEEE), 2014)
Text en actes de congrés
Accés restringit per política de l'editorialThis paper reports a comparison study of different carrier-based PWM techniques applied to the modular multilevel converter. Phase-disposition PWM (PD-PWM) and phase-shifted pulse-width modulation (PS-PWM) with non-interleaving ... -
Control of modular multilevel converters under singular unbalanced voltage conditions with equal positive and negative sequence components
(2017-05-01)
Article
Accés restringit per política de l'editorialThis paper focuses on the control of Modular Multilevel Converters (MMC) for High Voltage DC (HVDC) applications during unbalanced AC grid voltage sags where positive and negative sequence voltages are equal. The control ... -
Control strategy to balance operation of parallel connected legs of modular multilevel converters
(2013)
Text en actes de congrés
Accés obertConnecting legs of modular multilevel converters (MMCs) in parallel can assist an MMC-based high-voltage direct current (HVDC) to increase its current ratings and hence overall power handling capability. Consequently, each ... -
Corriente continua
(2008-12-01)
Audiovisual
Accés obert -
Determination of salinity and sugar concentration by means of a circular-ring monopole textile antenna-based sensor
(2021-11-01)
Article
Accés obertThis paper presents a monopole antenna-based sensor for measuring different amounts and concentrations of salt and sugar in water. The proposed antenna sensor consists of a textile monopole antenna with circular-ring and ... -
Electric measurements on crystaline silicon concentration cells
(Universitat Politècnica de Catalunya, 2008-02)
Projecte/Treball Final de Carrera
Accés obert -
Enhancing the flux estimation based sensorless speed control for switched reluctance machines
(2013)
Article
Accés restringit per política de l'editorialThis paper deals with the sensorless control of switched reluctance machines (SRMs) using the well- known stator flux estimation based technique. The novelty of this paper is the fact that the enti ... -
Estudi d'un convertidor MMC
(Universitat Politècnica de Catalunya, 2012-07)
Projecte/Treball Final de Carrera
Accés obert -
Génératrice à réluctance variable connectée au réseau alternatif monophasé pour une application éolienne
(2018)
Comunicació de congrés
Accés obertNous avons présenté dans ce travail le contrôle de la Génératrice à Réluctance Variable (GRV) connectée au réseau alternatif monophasé pour une application éolienne. La régulation de la vitesse de rotation est assurée par ... -
Improvement of driver to gate coupling circuits for SiC MOSFETS
(Institute of Electrical and Electronics Engineers (IEEE), 2014)
Text en actes de congrés
Accés restringit per política de l'editorialThis work presents a study of the influence of different gate driver circuits on the switching behavior of SiC MOSFET devices used in a buck converter. The paper is based on several tests performed to determine the switching ... -
LMA observation of upward flashes at Säntis Tower: preliminary result
(2018)
Text en actes de congrés
Accés obertLightning striking tall towers is mainly of the upward lightning type, which is characterized by the absence of a first return stroke and the presence of an initial continuous current (ICC) with or without superimposed ... -
Measurement of electric potential of isolated vertical conductive wires pulled by a drone under fair weather conditions
(2018)
Comunicació de congrés
Accés restringit per política de l'editorialThe popularization of multicopter drones opens new possibilities for investigations of the atmospheric potential. The method of directly measuring of the electric potential drop of the lower part of the atmosphere has been ... -
Modelització i control de sistemes de transmissió VDC-HVDC per parcs eòlics marins
(Universitat Politècnica de Catalunya, 2014-06-11)
Treball Final de Grau
Accés obertProjecte realitzat per tal d’optar a la titulació d’Enginyeria Elèctrica. El projecte tracta l’estudi d’un convertidor VSC-HVDC com a sistema de transmissió d’energia per parcs eòlics marins. En el present document es ... -
On-line core losses determination in ACSR conductors for DLR applications
(Multidisciplinary Digital Publishing Institute (MDPI), 2022-09-04)
Article
Accés obertDynamic line rating (DLR) is a method that focuses on dynamically determining the maximum allowable current of power lines, while ensuring they operate within safe limits. DLR needs to monitor the temperature and current ...