三轴隧道磁阻阵列电流传感器及电流测量方法  

Current measurement with 3-D coreless TMR sensor array for inclined conductor

作　　者：李非凡 冀永芳 庄盛秋 Li Feifan;Ji Yongfang;Zhuang Shengqiu(Xuzhou Power Supply Company,State Grid Jiangsu Electric Power Company,Xuzhou 221005,China)

机构地区：[1]国家电网江苏省电力有限公司徐州供电分公司,徐州221005

出　　处：《电子测量技术》2021年第18期54-60,共7页Electronic Measurement Technology

摘　　要：针对现有阵列式电流传感器测量偏心、倾斜导线时仍存在较大电流测量误差,设计了一种三轴隧道磁阻阵列电流传感器实现了导线偏心、倾斜时电流的准确测量,对单轴、双轴和三轴隧道磁阻阵列传感器的电流测量误差进行仿真比较,最大电流测量误差结果为25%、20.5%和1.39%,结果表明三轴隧道磁阻阵列电流传感器显著提高了导线偏心、倾斜时的电流测量精度,克服了导线偏心、倾斜对电流测量误差的影响,三轴隧道磁阻阵列电流传感器在电流测量领域中具有巨大优势。In view of the large measurement error introduced by the non-verticality of the wire, which still exists in the magnetic sensor arrays, a 3-D tunnel magnetoresistance(TMR) sensor array scheme is proposed to precisely measure the current when the wire is eccentric and tilted. Then the current measurement error of the single-axis, two-axis and three-axis TMR sensor array is simulated and compared, where the maximum current errors are 25%, 20.5% and 1.39%. It is obvious that the 3-D TMR sensor array can significantly improve the measurement accuracy and overcome the influence of eccentricity and tilt, so the 3-D TMR sensor array has great advantages in the field of current measurement.

关 键 词：无铁芯电流传感器 隧道磁阻传感器 非垂直 圆形传感器阵列 电流算法 

分 类 号：TN06[电子电信—物理电子学]