Neel Effect current sensor featuring double core toroidal topology

Eric Vourc'H (1) , Yu Wang (1) , Pierre-Yves Joubert (2) , André Couderette (3) , Lionel Cima (4)

1 SATIE - Systèmes et Applications des Technologies de l'Information et de l'Energie
2 IEF
3 Neelogy S. A.
4 Neelogy S.A.

A Neel Effect® current sensor featuring a double toroidal core is proposed. The measurement relies on the application of a harmonic excitation to the magnetic core and on the sensing of the magnetic flux density variations in the presence of a current to measure. The principle of a device designed so as to perform both those operations by means of the same winding is presented and validated experimentally. The measurement of DC currents is carried out over the [-200-200 A] range under different excitation conditions.

Mots clés: Current sensor; magnetic sensor; superparamagnetic; magnetic field

Domaines: Electronique

Eric Vourc'H, Yu Wang, Pierre-Yves Joubert, André Couderette, Lionel Cima. Neel Effect current sensor featuring double core toroidal topology. Electronics Letters, 2012, 48 (22), pp.1412 - 1414. ⟨10.1049/el.2012.1217⟩. ⟨hal-00825808⟩