A passive current sensor employing self-biased magnetoelectric transducer and high-permeability nanocrystalline flux concentrator

作     者：Ji-Tao Zhang Yu-Mei Wen Ping Li Ji-Tao Zhang;Yu-Mei Wen;Ping Li

作者机构：Research Center of Sensors and InstrumentsCollege of Optoelectronic EngineeringChongqing UniversityChongqing 400044China Department of Smart Grids and Information EngineeringCollege of Electric and Information EngineeringZhengzhou University of Light IndustryZhengzhou 450002China 

出 版 物：《Rare Metals》 (稀有金属（英文版）)

年 卷 期：2022年第41卷第7期

页      面：2343-2348页

核心收录：

学科分类：080802[工学-电力系统及其自动化] 0808[工学-电气工程] 080202[工学-机械电子工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0802[工学-机械工程] 

基　　金：financially supported by the National High Technology Research and Development Program of China (No. 2012AA040602) the National Natural Science Foundation of China (No. 61374217) 

主　　题：Magnetoelectric effects Current sensor Magnetic flux concentrator Magnetostrictive rare earth iron alloys 

摘      要：A passive current sensor,consisting of SmFe_(2)/PZT/SmFe_(2)self-biased magnetoelectric(ME)composite and Fe_(73.5)Cu_(1)Nb_(3)Si_(13.5)B_(9)nanocrystalline flux concentrator for weak current detection at power-line frequency,was fabricated and *** magnetostrictive material of SmFe_(2)plate with large anisotropic constant provides a huge internal anisotropic field to bias the ME transducer in closed magnetic ***,the additional magnetomotive force induced by the internal field and the corresponding increased effective permeabil-ity contribute to the improvement of the *** results demonstrate that the presented sensor has a higher sensitivity of 152 mV·A^(-1)at 50 Hz with a slight nonlinearity of~0.01%full scale(FS)and matches well with the predicted *** presented current-sensing device exhibits approximately 2.3 times higher sensitivity than that of conventional ME composite with[Pb(Zr_(0.48),Ti_(0.52)O_(3)](PZT)and Terfenol-D plates serving as a key sensitive *** addition,time stabilities of the presented sensor were evaluated for a long period of 72 h and analyzed through mathematical statistics method,and favorable stabilities with an uncertainty of 0.5μV are obtained in continuous 1 h *** results provide a significant advancement toward promising application of the tri-layer self-biased ME laminate for power-line elec-tric cords monitoring.