Enhanced magnetoelectric voltage in ferrite/PZT/ferrite composite for AC current sensor application
Enhanced magnetoelectric voltage in ferrite/PZT/ferrite composite for AC current sensor application
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DOI：
10.1007/s10854-018-9576-0
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发表时间：
2018-07
期刊：
影响因子：
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通讯作者：
A. Aubert;V. Loyau;G. Chaplier;F. Mazaleyrat;M. LoBue
中科院分区：
文献类型：
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作者：
A. Aubert;V. Loyau;G. Chaplier;F. Mazaleyrat;M. LoBue
本文报道了一种基于PZT/NiCoZn铁氧体磁电（ME）三层复合圆盘的稀土自由电流传感器的研制。为了提高传感器的灵敏度，该结构使用了面内串联连接，对于固定的体积，该结构将ME电压增加了两倍。然后，我们提出了一个完整的表征传感器：电气建模，低和高频率限制，灵敏度，线性度，失真和分辨率。该器件还在正弦、方波和三角波电流下进行了评估，这些电流是电气工程领域常用的激励信号。该电流传感器具有高电流灵敏度（90 mV/A）、良好的线性度（0.001 ~ 30 A）和低附加阻抗（0.01 Ω）。它还具有1 mA的高分辨率（1 A峰值信号）和良好的稳定性。
In this paper, we report the fabrication of a rare-earth free current sensor based on a PZT/NiCoZn-ferrite magnetoelectric (ME) trilayer composite disk. To improve the sensitivity of the sensor, the structure uses an in-plane series connection, which increases the ME voltage by two for a fixed volume. Then, we propose a full characterization of the sensor: electrical modeling, low and high frequency limits, sensitivity, linearity, distortion and resolution. The device is also evaluated under sinus, square, and triangle waveform currents, which are excitation signals commonly used in the field of electrical engineering. The current sensor shows high current sensitivity (90 mV/A), good linearity from 0.001 to 30 A and low added impedance (0.01 Ω) in a frequency range of 10 Hz–30 kHz for a very compact structure (4 cm3). It also exhibits a high resolution of 1 mA (for a 1 A peak signal) and good stability.