Chapter

Recent Advances in Automation, Robotics and Measuring Techniques

Volume 267 of the series Advances in Intelligent Systems and Computing pp 641-647

Digitally Controlled Current Transformer with Hall Sensor

  • Oleg PetrukAffiliated withIndustrial Research Institute for Automation and Measurements PIAP Email author 
  • , Roman SzewczykAffiliated withInstitute of Metrology and Biomedical Engineering, Warsaw University of Technology
  • , Jacek SalachAffiliated withInstitute of Metrology and Biomedical Engineering, Warsaw University of Technology
  • , Michał NowickiAffiliated withInstitute of Metrology and Biomedical Engineering, Warsaw University of Technology

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Abstract

Paper presents the digitally controlled high resolution DC current transformer enabling contactless measurements of DC current. To increase the sensitivity of current transformer, high permeability, amorphous alloy based ring-shaped core was used. Moreover, analyses of magnetic field distribution in the measuring gap were carried out. Magnetic field in this gap was measured by the hall sensor connected with the high resolution sigma-delta analog to digital converter. As a result, current up to 100 A may be measured with uncertainty of about 1A.

Keywords

current transformer Hall sensor