Exploració per autor "Sala Caselles, Vicenç"
Ara es mostren els items 13-32 de 36
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Diagnosis method for suspension-errors detection in electro-dynamic loud-speakers
(2011)
Text en actes de congrés
Accés restringit per política de l'editorialIn this paper, the wear of the suspensions in a speaker. This phenomenon can be characterized and seen as a variation of half inductance seen from the amplifier, because that value depends directly on the minimum and ... -
Disseny òptim d'amplificadors d'audio commutats DCI-NPC d'alta potència i qualitat
(Universitat Politècnica de Catalunya, 2014-12-12)
Tesi
Accés obertClass-D Amplification has been an absolute improvement in terms of electrical efficiency in audio amplification systems, but it has been during the first stabilization decade of this technology in the market when manufacturers ... -
Evaluation of trr distorting effects reduction in DCI-NPC multilevel power amplifiers by using SiC diodes and MOSFET technologies
(Curran, 2013)
Text en actes de congrés
Accés restringit per política de l'editorialIn the last decade, the Power Amplifier applications have used multilevel diode-clamped-inverter or neutral-point-clamped (DCI-NPC) topologies to present very low distortion at high power. In these applications a lot of ... -
Fault tolerant operation of a five phase converter for PMSM drives
(2013)
Text en actes de congrés
Accés restringit per política de l'editorialIn this paper a five phase fault tolerant converter is proposed for permanent magnet (PM) drives. The proposed configuration is an extension of conventional three phase double switch redundant topologies. In contrast to ... -
FUNCIONS ELECTRÒNIQUES (Examen 1r Quadr.)
(Universitat Politècnica de Catalunya, 2006-10-30)
Examen
Accés restringit a la comunitat UPC -
Impact of neutral point current control on copper loss distribution of five phase PM generators used in wind power plants
(2014)
Article
Accés obertEfficiency improvement under faulty conditions is one of the main objectives of fault tolerant PM drives. This goal can be achieved by increasing the output power while reducing the losses. Stator copper loss not only ... -
Impedance networks and its application in power for electric traction systems
(2016-04-26)
Article
Accés obertThe use of impedance networks in different types of DC/DC, DC/AC and AC/AC converters, has increased significantly, and many converters topologies and articles VSI and CSI with impedance networks have been presented for ... -
Improved open switch fault detection based on normalized current analysis in multiphase fault tolerant converters
(Institute of Electrical and Electronics Engineers (IEEE), 2013)
Comunicació de congrés
Accés restringit per política de l'editorialA new open switch fault detection method based on normalized current analysis is proposed for application in multiphase fault tolerant PMSM drives. Performance characteristics of proposed method are single diagnostic ... -
Loudspeaker Rub Fault Detection by Means of a New Nonstationary Procedure Test
(2011)
Text en actes de congrés
Accés restringit per política de l'editorialThis paper addresses rub defect loudspeaker detection. The study includes a simulation with a rub model based on classical static coulomb friction added to the loudspeaker nonlinearities parametric model to demonstrate ... -
Method to reduce THD and improve efficiency in SiC power converter.
(Institute of Electrical and Electronics Engineers (IEEE), 2018)
Text en actes de congrés
Accés obertThis paper presents a method to reduce total harmonic distortion (THD) and improve efficiency of a topology of power converter using SiC devices. The method consists of two parts: the first part finds the optimum offset ... -
Methodology for lighting optimization applied to photocatalytic reactors
(Institute of Electrical and Electronics Engineers (IEEE), 2019)
Comunicació de congrés
Accés obertReplacement of conventional UV-lamps used in photocatalytic reactors by UV-LED sources with lower energy consumption and larger versatility has been proposed recently; However, the implementation of these types of sources ... -
Millora de material docent en l'àmbit de l'electrònica de potència a l'EUETIT i l'EPSEM adaptat als crèdits ECTS.
(Universitat Politècnica de Catalunya. Institut de Ciències de l'Educació, 2010-02-11)
Comunicació de congrés / Text en actes de congrés
Accés obertEl projecte “Millora de material docent en l'àmbit de l'electrònica de potència a l'EUETIT i l'EPSEM adaptat als crèdits ECTS” te com a finalitat la millora de la formació i rendiment acadèmic dels estudiants tenint present ... -
Multilevel DCI-NPC power amplifier high-frequency distortion analysis through parasitic inductance dynamic model
(2011)
Text en actes de congrés
Accés restringit per política de l'editorialThe high frequency distortions sources in DCI-NPC (Diode Clamped Inverter-Neutral Point Converter) amplifiers topology are studied and analyzed. It is justified the need of designing a model which contains the different ... -
Neutral-point oscillation control based on a new audio space vector modulation (A-SVM) for DCI-NPC power amplifiers
(2011)
Text en actes de congrés
Accés restringit per política de l'editorialIn this work, the oscillation or flotation in the DC-BUS neutral point in the DCI-NPC (Diode Clamped Inverter–Neutral Point Clamped) amplifiers is presented as one of the most important distortion sources. This perturbation ... -
New strategy to minimize dead-time distortion in DCI-NPC power amplifiers using COE-error injection
(Curran, 2013)
Text en actes de congrés
Accés restringit per política de l'editorialThe DCI-NPC topology has become one of the best options to optimize energy efficiency in the world of high power and high quality amplifiers. This can use an analog PWM modulator that is sensitive to generate distortion ... -
Observer-based open transistor fault diagnosis and fault-tolerant control of five-phase permanent magnet motor drive for application in electric vehicles
(2015-01-01)
Article
Accés obertTo meet increasing demand for higher reliability in power electronics converters applicable in electric vehicles, fault detection (FD) is an important part of the control algorithm. In this study, a model-based open ... -
Optimal fitting of high-frequency cable model parameters by applying evolutionary algorithms
(2017-05-01)
Article
Accés obertDue to the widespread use of electronic power converters, low-voltage high-frequency cable models are being increasingly applied in industry, automobile or aeronautics applications among others. It is known that depending ... -
Performance analysis and methodology for replacing conventional lamps by optimized LED arrays for photocatalytic processes
(2020-04-01)
Article
Accés obertOne of the main drawbacks of heterogeneous photocatalysis is the high consumption of electrical energy generated by conventional lamps. This study proposes a methodology to find the best distribution of light emitting ... -
Power converters and its application in electric traction systems. Analysis present and future technologies
(2016-02-01)
Article
Accés obertthe traction systems for electric vehicles have advanced considerably over recent years, with the application of different topologies of power converters for the control of various types of electric induction motors and ... -
Ripple free fault tolerant control of five phase permanent magnet machines
(2013)
Text en actes de congrés
Accés restringit per política de l'editorialThis study is dealt with fault tolerant control of five phase permanent magnet (PM) machines. The main objectives are to increase the output power while eliminating the generated torque ripples. As a new aspect, the effect ...
