Luis Serrano-Iribarnegaray

Prof. Dr. Luis Serrano-Iribarnegaray

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Research Focus & Metrics

Academic Career Length

34Years (1993-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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1 September 2014 in Electric Power Systems Research
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Journal Article
Closed access
JDJuan Carlos Del-Pino-López
Juan Carlos Del-Pino-López
Pedro CruzPedro Cruz
Pedro Cruz
LSLuis Serrano-Iribarnegaray
Luis Serrano-Iribarnegaray
Javier Martinez-RomanJavier Martinez-Roman
Javier Martinez-Roman


1 January 2013 in Progress In Electromagnetics Research
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Journal Article
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LSLuis Serrano-Iribarnegaray
Luis Serrano-Iribarnegaray
Pedro CruzPedro Cruz
Pedro Cruz
AGAntonio Gomez-Exposito
Antonio Gomez-Exposito

29 March 2013 in IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
Verified
Journal Article
Closed access
JCJorge F. Cruza
Jorge F. Cruza
Jorge CamachoJorge Camacho
Jorge Camacho
LSLuis Serrano-Iribarnegaray
Luis Serrano-Iribarnegaray
CFCarlos Fritsch
Carlos Fritsch
In nondestructive evaluation (NDE) a coupling medium (wedge) is frequently inserted between the array probe and the object being evaluated. In this situation, focal law computing is complicated by the refraction effects at the interface. Furthermore, there are not known techniques to perform dynamic focusing by hardware in these conditions. This work addresses these problems by following a two-step procedure. First, a virtual array that operates in a single medium with nearly equivalent time-of-flight to the foci is obtained. Then, simple hardware is proposed to perform dynamic focusing in real-time. It operates with arrays of any geometry as required by the virtual array in presence of arbitrarily shaped interfaces. The paper describes the theory and evaluates the timing errors of the approximations made. These errors are low enough to allow use of the new technique in most NDE and some specific medical applications. The new technique is validated by simulation and experimentally.

12 April 2022 in IEEE Transactions on Industry Applications
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Journal Article
Closed access
JBJorge Bonet-Jara
Jorge Bonet-Jara
DANIEL MORINIGO-SOTELODANIEL MORINIGO-SOTELO
DANIEL MORINIGO-SOTELO
Oscar Duque-PerezOscar Duque-Perez
Oscar Duque-Perez
LSLuis Serrano-Iribarnegaray
Luis Serrano-Iribarnegaray
JPJoan Pons-Llinares
Joan Pons-Llinares
Wear of end ring is to date an unreported and uninvestigated failure that very frequently takes place in deep-well submersible motor pumps. This article first analyses the particularities of these induction motors, especially their unusual rotor manufacturing process. Failure mechanism related to the end-ring wear is described, showing several examples of damaged rotors in a motor repair shop. Then, the difficulties of its diagnosis through conventional rotor asymmetry indicators are described, caused by the subtlety of this fault and the very easy appearance of false negatives. The end-ring wear detection through a multicomponent approach is researched through simulation, laboratory results, and the diagnosis of two-field motors showing that new fault alarm levels need to be defined. To perform this last step and for the first time in the technical literature, two induction motors working in a deep borehole have been continuously monitored (one measure every six operating hours) for almost one year.