Improved 3-Phase Current Transducer

Proceedings

Grim, Václav¹  Ripka, Pavel²  Chirtsov, Andrey³ 

[1] Author to whom correspondence should be addressed.;Department of Measurement, Faculty of Electrical Engineering, Czech Technical University, 166 27 Praha, Czechia;Presented at the Eurosensors 2018 Conference, Graz, Austria, 9–12 September 2018.

关键词: current measurement;    fluxgate;    power distribution;   

DOI  :  10.3390/proceedings2131070

学科分类：社会科学、人文和艺术（综合）

来源: mdpi

【 摘 要 】

We propose improved contactless DC/AC current transducer for 3-phase current lines based on 8 integrated fluxgate sensors. Using proper processing we ideally achieve a complete suppression of external homogeneous fields, and field gradients up to the 4th order. The sensitivity to external currents (crosstalk) is improved 15-times compared to [1]. The usage of micro fluxgate sensors instead of magnetoresistive sensors improves the temperature stability: the sensitivity temperature coefficient was reduced from 0.3%/K to 50 ppm/K and offset drift was reduced from 50 mA/K to 1 mA/K.

【 授权许可】

CC BY