电测与仪表2017，Vol.54Issue(23)：105-110,6.
基于霍尔传感器阵列的电流测量系统
Hall effect element array based current measurement system
摘要
Abstract
Open-loop hall current transformer and closed-loop hall current transformer suffer the problem of magnetic saturation in the presence of magnetic core.A current measurement system based on Hall effect element array was developed,including the Hall effect sensor array and the electronic circuit.The circular array is composed of a surge of Hall element to approximate integration,and the measured current can be calculated by measuring the magnetic flux density induced by primary conductor.Firstly,the mathematic module of the array was formulated,and the error variation in the case of eccentric was investigated.Afterwards,the electronic circuit composed of the weighted gain adjustment circuit,the phase shift circuit and the power amplifier circuit were deigned to output high power signal.Finally,the basic error testing and the location influence experiment were performed.The results validate that the designed system can meet the requirement of 0.2 accuracy class.The designed system comprises 16 Hall elements,additionally,current ratio of the system is 600 A/5 A,while the power consumption is only 0.4 W.关键词
霍尔传感器/阵列/电流/测量系统/偏心Key words
Hall effect sensor/array/current/measurement system/eccentricity分类
信息技术与安全科学引用本文复制引用
项琼,岳长喜,胡琛,朱凯,龚慧,王欢..基于霍尔传感器阵列的电流测量系统[J].电测与仪表,2017,54(23):105-110,6.基金项目
国家电网公司科技项目(JL71-15-023) （JL71-15-023）
