Novel giant magnetostrictive material current sensor

Content Provider	Scilit
Author	Shen, Yan Liu, Zhao Lin, Qiuyan Ge, Jinming Zhang, Guoqing Yu, Wenbin
Copyright Year	2015
Description	Journal: Iop Conference Series: Materials Science and Engineering Because of the shortcomings of the traditional inductive current sensor and optical current sensor, this paper proposes a new type of current sensor that uses a giant magnetostrictive material (GMM) to monitor and control power lines. This paper introduces operating principle and structure design of a GMM current sensor. To eliminate the frequency- doubled effect and to obtain good linearity, we set the bias magnetic field to 11.53 kA/m and the prestress force to 6 MPa. The strains of the 100- and 200-mm GMM sticks under the same magnetic field were compared; the results showed that the 100-mm stick had a larger strain. The magnetic field interference during a single-phase measurement of power lines was also studied. Finally, we analyzed the device sensitivity and discussed its influencing factors. The sensitivity reached 4 × $10^{-9}$ $m^{2}$/A.
Related Links	http://iopscience.iop.org/article/10.1088/1757-899X/87/1/012089/pdf
ISSN	17578981
e-ISSN	1757899X
DOI	10.1088/1757-899x/87/1/012089
Journal	Iop Conference Series: Materials Science and Engineering
Issue Number	1
Volume Number	87
Language	English
Publisher	IOP Publishing
Publisher Date	2015-07-16
Access Restriction	Open
Subject Keyword	Journal: Iop Conference Series: Materials Science and Engineering Magnetostrictive Material Novel Giant Magnetostrictive
Content Type	Text
Resource Type	Article