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A resonant measurement system for characterization of hysteresis cycle in soft ferrites
Giannetti, Romano; Lizón Martínez, Santiago; Robles Muñoz, Guillermo; Tellini, Bernardo (Sin editorial (Sorrento, Italia), 24/04/2006)Characterization of magnetic cores is an indispensable task in order to securely accomplish the requirements of a power electronic design and prevent failures. Obtaining the hysteresis cycle is a crucial step to achieve a ... -
Accommodation study via a sensorless measurement technique
Tellini, Bernardo; Giannetti, Romano; Lizón Martínez, Santiago; Marracci, Mirko (2008-02-01)We present the results of an experimental analysis aimed at further characterizing the accommodation phenomenon. The measurements are done on commercial ferrite cores by the use of a volt-amperometric measurement technique. ... -
An improved DAQ-based method for ferrite characterization
Guarnieri Calo Carducci, Carlo; Marracci, Mirko; Attivissimo, Filippo; Giannetti, Romano; Tellini, Bernardo (2017-09-01)In this paper, we propose an improved version of the classical volt-amperometric measurement method for the characterization of magnetic hysteresis and losses in soft magnetic cores. Using an appropriate circuital solution ... -
Basic experimental set-ups for the characterization of emission from electrical discharge events
Giannetti, Romano; Macucci, Massimo; Tellini, Bernardo (WIT Press (Southampton, Reino Unido), 2003-09-01) -
Characterization of the accommodation effect in soft hysteretic materials via sensorless measurement technique
Tellini, Bernardo; Giannetti, Romano; Lizón Martínez, Santiago; Marracci, Mirko (2009-08-01)The well-known voltamperometric method has only been used so far in the identification of symmetric hysteresis cycles for reasons that are explained in the main text. This paper extends the sensorless measurement method ... -
Conducted and radiated interference measurements in the line-pantograph system
Tellini, Bernardo; Macucci, Massimo; Giannetti, Romano; Antonacci, G. (2001-12-01)We present the results of a measurement campaign aimed at investigating electromagnetic interference (EMI) phenomena in the interaction between overhead railway power supply lines and pantograph. In order to obtain such ... -
Design of a system for continuos intraocular pressure monitoring
Lizón Martínez, Santiago; Giannetti, Romano; Rodríguez Marrero, José Luis; Tellini, Bernardo (2005-08-01)Measuring intraocular pressure (IOP) has proved to be an important diagnosis tool for detecting and preventing glaucoma, a disease that could lead to blindness or even eye loss. Continuous time monitoring of IOP is important ... -
Equivalent network modeling to simulate electrical discharges
Giannetti, Romano; Tellini, Bernardo (2000-07-01)This paper presents an integral method developed to simulate the current waveform generated by electrical discharges in overvoltaged air gaps. The electrodesdielectric physical configuration is modeled with a schematic ... -
Experimental analysis of magnetic accommodation properties via the use of complex trajectories
Marracci, Mirko; Tellini, Bernardo; Giannetti, Romano; Lizón Martínez, Santiago (IEEE (Austin, Estados Unidos de América), 2010-05-03)We present the results of an experimental analysis aimed at characterizing possible accommodation phenomena in soft magnetic materials. The amount of magnetization change and the magnetization stabilization process appear ... -
Identification of parameters in a rogowski coil used for the measurement of partial discharges
Robles Muñoz, Guillermo; Argueso, Marta; Sanz, Javier; Giannetti, Romano; Tellini, Bernardo (Sin editorial (Varsovia, Polonia), 2007-05-01)The Rogowski coil is a simple and inexpensive device that can be adapted to measure high frequency currents such as those created by partial discharges in dielectrics. It has been demonstrated in previous works that the ... -
Improvements in a method to characterize soft ferrite up to high frequencies
Tellini, Bernardo; Giannetti, Romano; Lizón Martínez, Santiago (2006-05-01)This paper aims to show a low-cost and easy to use measurement method for characterizing magnetic material B(H) relation up to medium frequencies providing an acceptable overall accuracy of the acquired data. -
Line-pantograph EMI in railway systems
Tellini, Bernardo; Macucci, Massimo; Giannetti, Romano; Antonacci, G. (2001-12-01) -
Measurement of Asymmetric Minor Loops in Soft Ferrites Up to Medium Frequencies
Lizón Martínez, Santiago; Tellini, Bernardo; Giannetti, Romano; Robles Muñoz, Guillermo (Sin editorial (Varsovia, Polonia), 01/05/2007)An accurate measurement of the hysteresis cycle of magnetic cores is a crucial step in its characterization, due to its nonlinear and past-dependent effects over a design. These effects must be taken into account in order ... -
Measurement of asymmetric minor loops in soft ferrites up to medium frequencies
Lizón Martínez, Santiago; Tellini, Bernardo; Giannetti, Romano; Robles Muñoz, Guillermo (2009-02-01)An accurate measurement of the hysteresis cycle of magnetic cores is a crucial step in its characterization due to the importance that its nonlinear and past-dependent effects can have on the correct operation in most ... -
Measurement of magnetic accomodation through a sensorless technique
Tellini, Bernardo; Giannetti, Romano; Lizón Martínez, Santiago (Sin editorial (Victoria, Canadá), 12/05/2008)An extended analysis of the sensorless measurement methods adopted for the characterization of soft magnetic materials is here reported. The capability of measuring non symmetric cycles and their accommodation is reported ... -
Measuring the magnetic field attenuation of nonlinear shields
Bologna, M.; Giannetti, Romano; Marracci, Mirko; Tellini, Bernardo (Sin editorial (Sorrento, Italia), 24/04/2006)The problem of a low-frequency shielding of a loop placed inside a coaxial torus shield is analyzed by the application of the Schelkunoff transmission theory of shielding. Copper and iron torus shields are considered. In ... -
New method to characterize magnetic hysteresis in soft ferrites up to high frequencies
Tellini, Bernardo; Giannetti, Romano; Robles Muñoz, Guillermo; Lizón Martínez, Santiago (2006-02-01)Characterization of magnetic cores is an indispensable task in order to securely accomplish the requirements of a power electronic design and prevent failures. The hysteresis cycle of the material is one of the more complex ... -
Numerical characterization of dynamic hysteresis loops and losses in soft magnetic materials
Cardelli, E.; Giannetti, Romano; Tellini, Bernardo (2005-05-01)This paper deals with the characterization of dynamic loops shapes and losses in soft magnetic materials. An experimental and theoretical analysis has been done in order to describe static and dynamic hysteresis on soft ... -
On the use of the dual resonance non linear filter for speech processing in a hearing aid algorithm
Marracci, Mirko; Tellini, Bernardo; Giannetti, Romano; Lizón Martínez, Santiago (Politecnico di Bari (Bari, Italia), 2011-05-30)The Dual Resonance Non Linear (DRNL) filter bank is a powerful model of the human cochlear behavior successfully applied to cochlear implants. This study is aimed to the implementation of an algorithm for using this model ... -
Remarks on models for prediction of radiated fields in electrical discharge events
Giannetti, Romano; Macucci, Massimo; Tellini, Bernardo (2001-06-21)Ambiguities have appeared in the literature on the role of the arc in the electromagnetic radiation associated with electrostatic dis-charges. We discuss the contribution of the arc channel to the total emis-sion, and ...