计量学报2024，Vol.45Issue(7)：935-940,6.DOI:10.3969/j.issn.1000-1158.2024.07.02
在等电位工作状态下校准多元感应分流器
Multiple Inductive Current Dividers Calibration on Equipotential Working Condition
摘要
Abstract
A method for calibration of multiple inductive current dividers(MICD)is proposed.The I/V converter consisting of a voltage follower and a resistor is introduced in the calibration circuit,resulting in the same status for the current ratio of the branches of the MICD both in the calibration and the actual working condition.The MICD with 11 branches has been calibrated compared with an independent reference current provided by a reference current transformer(CT)used to avoid the influence on the current ratio of the branches.The MICD were calibrated at 20、55、400 Hz and 1 kHz.The results showed that the measurement standard uncertainty of ratio errors were better than 0.2 μA/A and phase errors were better than 1.5 μrad at the ratio of 10:1.关键词
电学计量/多元感应分流器/等电位/电流比例/比值差/相位差/校准Key words
electrical metrology/multiple inductive current dividers/equipotential/current proportion/ratio error/phase error/calibration分类
通用工业技术引用本文复制引用
杨迪,林君,张江涛,石照民,潘仙林..在等电位工作状态下校准多元感应分流器[J].计量学报,2024,45(7):935-940,6.基金项目
国家重点研发计划(2022YFF0607703) （2022YFF0607703）
