Magnetoelectric Sensor Operating in d15 Thickness-Shear Mode for High-Frequency Current Detection

• DOI: 10.3390/s24082396
• Publication Date: 2024-04-09T12:55:12Z
• Authors: Fuchao Li; Jingen Wu; Sujie Liu; Jieqiang Gao; Bomin Lin; Jintao Mo; Jiacheng Qiao; Yiwei Xu; Yongjun Du; Xin He; Yifei Zhou; Lan Zeng; Zhongqiang Hu; Ming Liu
• Keywords: Chemical technology; current sensor; high frequency; TP1-1185; thickness-shear mode; Article

For the application of high-frequency current detection in power systems, such as very fast transient current, lightning current, partial discharge pulse current, etc., current sensors with a quick response are indispensable. Here, we propose a high-frequency magnetoelectric current sensor, which consists of a PZT piezoelectric ceramic and Metglas amorphous alloy. The proposed sensor is designed to work under d15 thickness-shear mode, with the resonant frequency around 1.029 MHz. Furthermore, the proposed sensor is fabricated as a high-frequency magnetoelectric current sensor. A comparative experiment is carried out between the tunnel magnetoresistance sensor and the magnetoelectric sensor, in the aspect of high-frequency current detection up to 3 MHz. Our experimental results demonstrate that the d15 thickness-shear mode magnetoelectric sensor has great potential for high-frequency current detection in smart grids.