title: Broadband high-sensitivity current-sensing device utilizing nonlinear magnetoelectric medium and nanocrystalline flux concentrator.
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.
authors.affiliation: 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.
authors.forename: Jitao
authors.initials: J
authors.lastname: Zhang
authors.affiliation: College of Information Engineering, Baise University, Baise 533000, People's Republic of China.
authors.forename: Wei
authors.initials: W
authors.lastname: He
authors.affiliation: Department of Basic Education, Air Defense Forces Academy, Zhengzhou 450000, People's Republic of China.
authors.forename: Ming
authors.initials: M
authors.lastname: Zhang
authors.affiliation: 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.
authors.forename: Hongmei
authors.initials: H
authors.lastname: Zhao
authors.affiliation: 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.
authors.forename: Qian
authors.initials: Q
authors.lastname: Yang
authors.affiliation: 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.
authors.forename: Shuting
authors.initials: S
authors.lastname: Guo
authors.affiliation: 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.
authors.forename: Xiaolei
authors.initials: X
authors.lastname: Wang
authors.affiliation: 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.
authors.forename: Xiaowan
authors.initials: X
authors.lastname: Zheng
authors.affiliation: 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.
authors.forename: Lingzhi
authors.initials: L
authors.lastname: Cao