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Zhang J, He W, Zhang M, et al. Broadband high-sensitivity current-sensing device utilizing nonlinear magnetoelectric medium and nanocrystalline flux concentrator. Rev Sci Instrum. 2015;86(9):095005doi: 10.1063/1.4930150.
Zhang, J., He, W., Zhang, M., Zhao, H., Yang, Q., Guo, S., Wang, X., Zheng, X., & Cao, L. (2015). Broadband high-sensitivity current-sensing device utilizing nonlinear magnetoelectric medium and nanocrystalline flux concentrator. The Review of scientific instruments, 86(9), 095005. https://doi.org/10.1063/1.4930150
Zhang, Jitao, et al. "Broadband high-sensitivity current-sensing device utilizing nonlinear magnetoelectric medium and nanocrystalline flux concentrator." The Review of scientific instruments vol. 86,9 (2015): 095005. doi: https://doi.org/10.1063/1.4930150
Zhang J, He W, Zhang M, Zhao H, Yang Q, Guo S, Wang X, Zheng X, Cao L. Broadband high-sensitivity current-sensing device utilizing nonlinear magnetoelectric medium and nanocrystalline flux concentrator. Rev Sci Instrum. 2015 Sep;86(9):095005. doi: 10.1063/1.4930150. PMID: 26429473.
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Rev Sci Instrum. 2015 Sep;86(9):095005. doi: 10.1063/1.4930150.

Broadband high-sensitivity current-sensing device utilizing nonlinear magnetoelectric medium and nanocrystalline flux concentrator.

The Review of scientific instruments

Jitao Zhang, Wei He, Ming Zhang, Hongmei Zhao, Qian Yang, Shuting Guo, Xiaolei Wang, Xiaowan Zheng, Lingzhi Cao

Affiliations

  1. College of Electric and Information Engineering, Zhengzhou University of Light Industry, Zhengzhou 450002, People's Republic of China and Key Laboratory for Informatization Electrical Appliances of Henan Province, Zhengzhou 450002, People's Republic of China.
  2. College of Information Engineering, Baise University, Baise 533000, People's Republic of China.
  3. Department of Basic Education, Air Defense Forces Academy, Zhengzhou 450000, People's Republic of China.

PMID: 26429473 DOI: 10.1063/1.4930150

Abstract

A broadband current-sensing device with frequency-conversion mechanism consisting of Terfenol-D/Pb(Zr.Ti)O3 (PZT)/Terfenol-D magnetoelectric laminate and Fe73.5Cu1Nb3Si13.5B9 nanocrystalline flux concentrator is fabricated and characterized. For the purpose of acquiring resonance-enhanced sensitivity within broad bandwidth, a frequency-modulation mechanism is introduced into the presented device through the nonlinearity of field-dependence giant magnetostrictive materials. The presented configuration provides a solution to monitor the weak currents and achieves resonance-enhanced sensitivity of 178.4 mV/A at power-line frequency, which exhibits ∼3.86 times higher than that of direct output at power-line frequency of 50 Hz. Experimental results demonstrate that a weak step-change input current of 1 mA can be clearly distinguished by the output amplitude or phase. This miniature current-sensing device provides a promising application in power-line weak current measurement.

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