Interharmonics and light flicker

Pekka Koponen, Henrik Hansen, Math Bollen

    Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review


    High levels of odd triplen harmonics and flicker of Compact Fluorescent Lamps (CFL) have been observed in networks. This paper addresses the possibility that
    these issues are related by the following phenomena. Inverter driven loads such as heat pumps generate odd harmonics that can be modulated by fluctuations in those loads, such as oscillating torque. Because the zero sequence impedance of the low voltage distribution network is much higher than for the other symmetric
    components of a three phase system, the impacts of odd triplen harmonics currents on the voltage are stronger than for the other harmonic currents. Modulating fluctuations may also come from the power network. This modulation causes interharmonics near odd harmonics, which cause voltage peak value fluctuations. In typical Compact Fluorescent Lamps (CFL) the link capacitance is dimensioned so small that the luminance varies with the voltage peak value fluctuations. Some related gaps in Electro Magnetic Compatibility standards are pointed out.
    Original languageEnglish
    Title of host publication23rd International Conference on Electricity Distribution
    PublisherInternational Conference and Exhibition on Electricity Distribution CIRED
    Number of pages5
    Publication statusPublished - 2015
    MoE publication typeA4 Article in a conference publication
    Event23rd International Conference on Electricity Distribution, CIRED 2015 - Lyon, France
    Duration: 15 Jun 201518 Jul 2018
    Conference number: 23

    Publication series

    SeriesCIRED: Conference Proceedings


    Conference23rd International Conference on Electricity Distribution, CIRED 2015
    Abbreviated titleCIRED 2015


    • power quality
    • electromagnetic compatibility
    • interharmonics


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