Autors: Marinova, I. Y., Mateev, V. M., Ralchev, M. L.
Title: Harmonic spectrum analysis of current sensor
Keywords: Fast-Fourier transform algorithm, Frequency contents, Hall-effect sensors, Harmonic spectrum, Harmonic spectrum analysis, Magnetic core saturation, Magnetic saturation effects, Processing approach

Abstract: Magnetic core saturation is main reason for limited measurement range of electric current sensors such as current transformers and current closed loop magnetic sensors. Saturation leads to output signal nonlinearity aberration which in some cases could be mixed with primary current nonlinearity due to electric power load. In this paper is presented a data processing approach for current sensor output signal analysis based on harmonics content. Hall effect sensor measurement setup is used for primary current data acquisition. Measured sensor output signal data have been processed by fast Fourier transformation algorithm in order to decompose frequency content in different load conditions and magnetic saturation effects. The proposed approach can be used in all current sensors based on open and closed loop measuring principle with magnetic core


  1. Bogdanov, D., Ralchev, M., Mateev, V., Marinova, I., 2019, Harmonic spectrum filtration for current sensor measurements, Varna, Bulgaria, 6-8 June 2019, <16th Conference on Electrical Machines, Drives and Power Systems, ELMA 2019 - Proceedings, art. no. 8771574>, IEEE
  2. LEM, 2018, Current transducer LF 306-S, Data Sheet, e-book,, LEM, <>, Дата на последен преглед (Last accessed on): 17.11.2020
  3. Milano, L., 2014, Reinforced isolation for current sensor with magnetic field transducer, US Patent 8, December 9, <US 8 907 437B2>
  4. Liu, J., Sanli, A., Wang, Y., Liu, C., 2012, Error Compensation of Closed Loop Hall Effect Current Sensors, Aachen, Germany, September 26-28, 2012, <IEEE International Workshop on Applied Measurements for Power Systems (AMPS)>, IEEE


11th Electrical Engineering Faculty Conference, BulEF 2019, vol. BulEF 2019, issue 11, pp. Article number 9030702, 2019, Bulgaria, IEEE Inc, DOI 10.1109/BulEF48056.2019.9030702

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Вид: пленарен доклад в международен форум, публикация в реферирано издание, индексирана в Scopus