Title :
A low frequency current transducer using amorphous materials
Author :
Fosalau, Cristian ; Silion, Stefan ; Zet, Cristian
Author_Institution :
Fac. of Electr. Eng., Tech. Univ. of Iasi, Iasi, Romania
Abstract :
Magnetic amorphous wires (MAW) exhibit remarkable properties and effects when put under the action of various external factors, making them very attractive for construction of a new generation of sensors. In the paper, the functional model of a transducer able to measure low frequency electric currents in a wide range of values is presented. The transducer is composed by a sensitive element (SE) conceived on the basis of Giant Magnetoimpedance Effect (GMI) occurring in nearly-zero magnetostrictive amorphous wires (MAW), and a Signal Conditioning Circuit (SCC) devoted to process the signal delivered by SE and to provide as output a frequency related to the measured electric current. The main characteristics of the transducer, along with some discussions on the device optimization and performances are also presented in the paper.
Keywords :
amorphous state; electric current measurement; giant magnetoresistance; signal conditioning circuits; transducers; amorphous materials; giant magnetoimpedance effect; low frequency current transducer; low frequency electric currents; magnetic amorphous wires; sensitive element; signal conditioning circuit; Conductors; Frequency measurement; Impedance; Magnetic domains; Magnetostriction; Transducers; Wires; current transducer; giant magnetoimpedance effect; magnetic amorphous wires;
Conference_Titel :
Electrical and Power Engineering (EPE), 2014 International Conference and Exposition on
Conference_Location :
Iasi
DOI :
10.1109/ICEPE.2014.6970021
