Wire-positioning algorithm for coreless Hall array sensors in current measurement. (29th March 2018)

• Record Type: Journal Article
• Authors: Chen, Wenli; Zhang, Huaiqing; Chen, Lin; Gu, Shanyun
• Is Part Of: Measurement science & technology. Volume 29:Number 5(2018:May)
• Publication Date: 2018-03-29
• Subjects: Hall-effect current transformer -- coreless -- wire positioning method; Physical measurements -- Periodicals; Scientific apparatus and instruments -- Periodicals; Equipment and Supplies -- Periodicals; Science -- instrumentation -- Periodicals; Technology -- instrumentation -- Periodicals; Mesures physiques -- Périodiques; Physical measurements; Scientific apparatus and instruments; Periodicals; 502.87
• DOI: 10.1088/1361-6501/aaaef0
• Languages: English
• ISSNs: 0957-0233

Abstract

Abstract: This paper presents a scheme of circular-arrayed, coreless Hall-effect current transformers. It can satisfy the demands of wide dynamic range and bandwidth current in the distribution system, as well as the demand of AC and DC simultaneous measurements. In order to improve the signal to noise ratio (SNR) of the sensor, a wire-positioning algorithm is proposed, which can improve the measurement accuracy based on the post-processing of measurement data. The simulation results demonstrate that the maximum errors are 70%, 6.1% and 0.95% corresponding to Ampère's circuital method, approximate positioning algorithm and precise positioning algorithm, respectively. It is obvious that the accuracy of the positioning algorithm is significantly improved when compared with that of the Ampère's circuital method. The maximum error of the positioning algorithm is smaller in the experiment.