自平衡式交直流电流比较仪研究

曲正伟; 胡小川

曲正伟,胡小川.自平衡式交直流电流比较仪研究[J].电测与仪表,2015,52(3):.
QU Zheng-wei,HU Xiao-chuan.The Development of Self-balancing AC and DC Current Comparator[J].Electrical Measurement & Instrumentation,2015,52(3):.

自平衡式交直流电流比较仪研究

The Development of Self-balancing AC and DC Current Comparator

DOI：

中文关键词: 电磁测量磁调制器电流比较仪

英文关键词:Electromagnetic measurement, magnetic modulator, current comparator

基金项目:国家自然科学基金资助项目(51107109);河北省自然科学基金资助项目（E2013203195）

作者中文名	作者英文名	单位
曲正伟	QU Zheng-wei	燕山大学电力电子节能与传动控制河北省重点实验室
胡小川	HU Xiao-chuan	电力电子节能与传动控制河北省重点实验室燕山大学

摘要点击次数: 1787

中文摘要:

为满足日益提高的宽频电流测量需求,本文设计研制了一种自平衡式交直流电流比较仪。该交直流电流比较仪在磁调制式直流电流比较仪的基础上引入闭环交流测量通道,不仅极大地拓展了其测量的频带宽度,而且利用反馈技术实现了电流比较仪的自动平衡。详细介绍了电流比较仪的研制过程,并搭建虚拟仪器自动测试系统对所研制电流比较仪的性能进行考察。测量结果表明,该交直流电流比较仪在直流测量时的线性误差小于2×10-4,交流测量带宽不低于100kHz,测量标准不确定度为2×10-5。

英文摘要:

This paper develops a self-balancing AC and DC current comparator for meeting the growing demand of wideband current measurement. The AC and DC current comparator is built up on the basis of magnetic modulation-based direct current comparator and a closed-loop alternative measurement channel has been added. The new design can not only expand the measuring band width, but also make the current comparator self-balanced. The development process has been described in detail and an automatic measuring system based on virtual instrument control has been set up to test measurement performance of the current comparator. The measuring results show that its DC linear error is below 2×10-4, AC measurement bandwidth is no less than 100kHz, and standard measurement uncertainty is 2×10-5.

查看全文查看/发表评论下载PDF阅读器

关闭