Sensors (Apr 2024)

Magnetoelectric Sensor Operating in <i>d</i><sub>15</sub> Thickness-Shear Mode for High-Frequency Current Detection

  • 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

DOI
https://doi.org/10.3390/s24082396
Journal volume & issue
Vol. 24, no. 8
p. 2396

Abstract

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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.

Keywords