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Title: Novel giant magnetostrictive material current sensor
Authors: Shen, Y
Liu, Z
Lin, Q
Ge, J
Zhang, G
Yu, W 
Keywords: Composite materials
Inductive sensors
Magnetic fields
Bias magnetic field
Device sensitivity
Giant magnetostrictive materials
Inductive current
Magnetic field interference
Monitor and control
Operating principles
Optical current sensor
Magnetostrictive devices
Issue Date: 2015
Citation: Shen, Y, Liu, Z, Lin, Q, Ge, J, Zhang, G, Yu, W (2015). Novel giant magnetostrictive material current sensor. IOP Conference Series: Materials Science and Engineering 87 (1) : 12089. ScholarBank@NUS Repository.
Rights: Attribution 4.0 International
Abstract: 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 m2/A.
Source Title: IOP Conference Series: Materials Science and Engineering
ISSN: 17578981
DOI: 10.1088/1757-899X/87/1/012089
Rights: Attribution 4.0 International
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