DC-compensated Current Transformer

被引：0

作者：

Ripka, P. ^{[1
]}

Draxler, K. ^{[1
]}

Styblikova, R. ^{[2
]}

机构：

[1] Czech Tech Univ, CR-16635 Prague, Czech Republic

[2] Czech Metrol Inst, Prague, Czech Republic

来源：

2014 IEEE INTERNATIONAL INSTRUMENTATION AND MEASUREMENT TECHNOLOGY CONFERENCE (I2MTC) PROCEEDINGS | 2014年

关键词：

Current transformer; current sensor; DC tolerance;

D O I：

暂无

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

Instrument current transformers (CTs) can be heavily influenced by DC component in the measured current. 50 A DC current in 500 A CT may cause 40% error in the current and power measurement. For small power factors the situation can be even worse due to 20 deg phase error. We use digital feedback compensation of the DC flux to suppress the overall error to 0.15%.

引用

页码：212 / 215

页数：4

共 12 条

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