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Uncertainties in the Quantification of Supraharmonic Emission: Variations over Time
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Energy Science.ORCID iD: 0000-0001-6074-8633
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Energy Science.ORCID iD: 0000-0002-4004-0352
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Energy Science.ORCID iD: 0000-0003-4074-9529
2020 (English)In: PAPERS0 ICREPQ'20, European Association for the Development of Renewable Energies, Environment and Power Quality (EA4EPQ) , 2020, article id 208Conference paper, Published paper (Refereed)
Abstract [en]

This paper shows a study of the variations of the supraharmonic distortion emitted by an LED lamp during and after its thermal stabilization. The study is aimed to contribute to map the uncertainties existing when quantifying supraharmonics. Measurements of the current drawn by five lamps of the same type and manufacturer are performed. Then, analysis in the frequency domain is performed and the Total Supraharmonic Current (TSHC) index is used to quantify the supraharmonic emission of the lamps. The TSHC is calculated over bands of different widths, whose outcomes are then compared to decide which bandwidth results in a less time-varying-TSHC index. It is demonstrated that the supraharmonic distortion emitted by the lamp under study experiences both an increase in magnitude and a shift in frequency during the thermal stabilization of the lamp. It is also shown how the frequency grouping impacts the quantification. It is concluded that the best choice of a grouping bandwidth is one wide enough so that it includes the whole emission band of interest. This result is a step forward to set up references for the analysis and quantification of broadband supraharmonic emission.

Place, publisher, year, edition, pages
European Association for the Development of Renewable Energies, Environment and Power Quality (EA4EPQ) , 2020. article id 208
Series
Renewable Energy and Power Quality Journal (RE&PQJ), ISSN 2172-038X, E-ISSN 2172-038X ; 18
Keywords [en]
Supraharmonics, LED, power quality, highfrequency distortion, efficiency lighting
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
Research subject
Electric Power Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-80923DOI: 10.24084/repqj18.208Scopus ID: 2-s2.0-85082104346OAI: oai:DiVA.org:ltu-80923DiVA, id: diva2:1470352
Conference
18th International Conference on Renewable Energies and Power Quality (ICREPQ’20), 1-3 April, 2020, Granada, Spain
Available from: 2020-09-24 Created: 2020-09-24 Last updated: 2023-09-05Bibliographically approved

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Espín-Delgado, AngelaRönnberg, Sara K.Bollen, Math H. J.

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