A linearization method for commercial Hall-effect current transducers

被引：51

作者：

Cristaldi, L ^{[1
]}

Ferrero, A ^{[1
]}

Lazzaroni, M ^{[1
]}

Ottoboni, R ^{[1
]}

机构：

[1] Politecn Milan, Dipartimento Elettrotecn, I-20133 Milan, Italy

来源：

IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT | 2001年 / 50卷 / 05期

关键词：

closed-loop Hall-effect transducers; compensation methods; current transducers; linearization methods;

D O I：

10.1109/19.963175

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：

The need for high-current transducers featuring wide-band and high-insulation levels is becoming a more and more impelling need in the electric power network, as the current distortion increases due to the proliferation of nonlinear, time-variant loads. The closed-loop Hall-effect current transducers show a good compromise between cost and metrological performance. On the other hand, they may introduce an unacceptable nonlinearity error when the dynamic range of the input current is a reduced portion of the dynamic range of the transducer and may show a large drift of their gain with temperature. The paper proposes a simple method for reduction of the nonlinearity error when the input signal is an unbiased sinewave and the automatic calibration of the gain. Experimental results are also reported, showing the method effectiveness.

引用

页码：1149 / 1153

页数：5