A Busbar Current Sensor With Frequency Compensation

被引：16

作者：

Ripka, Pavel ^{[1
]}

Grim, Vaclav ^{[1
]}

Petrucha, Vojtech ^{[1
]}

机构：

[1] Czech Tech Univ, Fac Elect Engn, Prague 16627, Czech Republic

来源：

IEEE TRANSACTIONS ON MAGNETICS | 2017年 / 53卷 / 04期

关键词：

Current sensor; fluxgate; magnetic sensor;

D O I：

10.1109/TMAG.2016.2620959

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

DC/AC yokeless galvanically insulated electric current sensors are required for applications, e.g., in automotive and aerospace engineering, where size, weight, and/or price are strictly limited. A busbar current sensor with differential fluxgate in the hole has 1000 A range and 10 mA resolution. Using an asymmetric shape, we achieved a frequency error below +/- 3% up to 1 kHz, while keeping high temperature stability and low sensitivity to mechanical misalignments. The 2.5 mA/degrees C maximum dc drift is four times better than when using an AMR sensor and 1000 times better than when using a Hall sensor. The sensor linearity error is below 0.1%.

引用

页数：5

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