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Mostrando ítems 1-5 de 5

Comparative study of speed estimators with highly noisymeasurement signals for Wind Energy Generation Systems

Carranza Castillo, Oscar; Figueres Amorós, Emilio; Garcerá Sanfeliú, Gabriel; González Morales, Luis Gerardo (Elsevier, 2011-03)

This paper presents a comparative study of several speed estimators to implement a sensorless speed control loop in Wind Energy Generation Systems driven by power factor correction three-phase boost rectifiers. This rectifier ...
Dielectric spectroscopy of natural rubber-cellulose II nanocomposites

Ortiz Serna, Mª Pilar; Díaz Calleja, Ricardo; Sanchis Sánchez, María Jesús; Riande, Evaristo; Numes, R.; Martins, A.; Visconte, L. (Elsevier, 2011)

[EN] Nanocomposite materials obtained from natural rubber (NR) reinforced with different amounts of cellulose II nanoparticles (in the range of 0 to 30 phr) are studied by dielectric spectroscopy (DS). For comparative ...
Differential group delay monitoring for high-speed data based on a low-frequency radio-frequency tone power measurement

Vilar Mateo, Ruth; Nadarajah, Nishaanthan; Nirmalathas, Ampalavanapillai; Llorente Sáez, Roberto; Ramos Pascual, Francisco (Institution of Engineering and Technology (IET), 2012-04)

[EN] A first-order polarisation mode dispersion (differential group delay (DGD)) monitoring technique using a low-speed detector for 40 Gb/s return to zero data transmission is proposed and experimentally demonstrated. The ...
Low frequency dielectric measurements to assess post-mortem ageing of pork meat

Castro Giráldez, Marta; Toldrá Vilardell, Fidel; Fito Maupoey, Pedro (Elsevier, 2011-07)

[EN] The use of dielectric properties at low frequencies to estimate the progress of pork meat (Longissimus dorsi) ageing was evaluated. Dielectric measurements were perfomed at 140 Hz, 1 kHz and 300 kHz in perpendicular ...
Transient tracking of low and high-order eccentricity-related components in induction motors via TFD tools

Climente Alarcón, Vicente; Antonino-Daviu, J.; Riera-Guasp, Martín; Pons Llinares, Joan; Roger-Folch, José; Jover-Rodriguez, P.; Arkkio, A. (Elsevier, 2011)

[EN] The present work is focused on the diagnosis of mixed eccentricity faults in induction motors via the study of currents demanded by the machine. Unlike traditional methods, based on the analysis of stationary currents ...

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