DocumentCode :
103939
Title :
Neel Effect Toroidal Current Sensor
Author :
Vourc´h, Eric ; Wang, Yu ; Joubert, Pierre-Yves ; Revol, Bertrand ; Couderette, André ; Cima, Lionel
Author_Institution :
SATIE, ENS Cachan, Cachan, France
Volume :
49
Issue :
1
fYear :
2013
fDate :
Jan. 2013
Firstpage :
81
Lastpage :
84
Abstract :
In this paper, a configuration for a Neel effect ac-dc current sensor designed with second harmonic sensing in view is proposed. This configuration relies on the use of two toroidal superparamagnetic cores wound in opposite direction with respect to each other and connected in series. An analytical model is developed, which shows that the component of the output signal at the excitation frequency, which is useless, should be removed provided that the windings are symmetrical. The latter principle is validated experimentally and a prototype device is characterized for different excitation conditions. Open loop dc and ac current measurements are carried out over the [-110 A, 110 A] range.
Keywords :
electric current measurement; electric sensing devices; Neel effect ac-dc current sensor; open loop ac current measurements; open loop dc current measurements; second harmonic sensing; toroidal current sensor; toroidal superparamagnetic cores; Coils; Current measurement; Frequency measurement; Harmonic analysis; Magnetic cores; Toroidal magnetic fields; Windings; Current sensor; electric current control; magnetic sensor; nanoparticles; power system management; superparamagnetism;
fLanguage :
English
Journal_Title :
Magnetics, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9464
Type :
jour
DOI :
10.1109/TMAG.2012.2222021
Filename :
6392431
Link To Document :
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