A Fluxgate Current Sensor With a U-Shaped Magnetic Gathering Shell

Author

Xiaoguang Yang ; Wei Guo ; Congcong Li ; Bo Zhu ; Lingling Pang ; Youhua Wang

Author_Institution

Province-Minist. Joint Key Lab. of Electromagn. Field & Electr. Apparatus Reliability, Hebei Univ. of Technol., Tianjin, China

Volume

51

Issue

11

fYear

2015

Firstpage

1

Lastpage

4

Abstract

This paper presents a new current sensor based on fluxgate principle. The sensor consists of a U-shaped magnetic gathering shell. In the designed sensor, the exciting winding and the secondary winding are arranged orthogonally, so that the magnetic fields produced by the two windings are mutually orthogonal and decoupled. Introducing a magnetic gathering shell into the sensor is to concentrate the detected magnetic field and to reduce the interference of an external stray field. Based on the theoretical analysis and the simulation results, a prototype was designed. Test results show that the proposed sensor can measure currents up to 25 A, and has an accuracy of 0.6% and a remarkable resolution.

Keywords

electric current measurement; electric sensing devices; interference suppression; magnetic field measurement; magnetic sensors; windings; U-shaped magnetic gathering shell; current measurement; exciting winding; external stray field; fluxgate current sensor; interference suppression; magnetic field detection; secondary winding; Magnetic cores; Magnetic fields; Magnetic flux; Magnetic hysteresis; Magnetic noise; Saturation magnetization; Windings; Current sensor; U-shaped magnetic gathering shell; current sensor; fluxgate principle; toroidal magnetic core;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2015.2452267

Filename

7147812