Time dependency of current harmonics for switch-mode power supplies
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Journal Title
Journal ISSN
Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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Date
2020-11-01
Department
Tallinn University of Technology
Department of Electrical Engineering and Automation
St. Petersburg National Research University of Information Technologies, Mechanics and Optics (ITMO)
Department of Electrical Engineering and Automation
St. Petersburg National Research University of Information Technologies, Mechanics and Optics (ITMO)
Major/Subject
Mcode
Degree programme
Language
en
Pages
12
Series
Applied Sciences (Switzerland), Volume 10, issue 21
Abstract
This paper presents the time-dependent variance in the current harmonics emission by power supplies during power quality measurements. Power quality problems are becoming more significant with the adoption of power electronic-based circuits such as power supplies. The switch-mode power supplies are widespread as industrial, commercial, and domestic electrical loads. They draw non-sinusoidal current from the utility and inject current harmonics. Therefore, they are the reason for poor power quality and reduction in the power factor. The current harmonics emission from these power supplies depends on the circuit topology, operating conditions, and filter inside them. The harmonic emission estimations are critical for network operators; however, various uncertainties have made it a complicated task. The time-dependent stability affects the magnitude and phase angle of the harmonic current measurements and estimation of power quality indices. This paper investigates the variation in current harmonics emitted by the power supply during the initial unstable period under constant load and operating conditions.Description
Keywords
Current harmonics, Power quality, Switched-mode power supplies, Thermal stability, Total harmonic distortion
Other note
Citation
Iqbal , M N , Kütt , L , Asad , B , Vaimann , T , Rassõlkin , A & Demidova , G L 2020 , ' Time dependency of current harmonics for switch-mode power supplies ' , Applied Sciences (Switzerland) , vol. 10 , no. 21 , 7806 . https://doi.org/10.3390/app10217806
