Time-dependent variations in current harmonic emission by LED lamps in the low-voltage network

Muhammad Naveed Iqbal*, Lauri Kütt, Bilal Asad, Noman Shabbir, Iftikhar Rasheed

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

1 Citation (Scopus)


This paper presents the variation in current harmonics injected by the LED lamps and their effect on harmonic estimation in the low-voltage network. Lighting consumes a significant portion of total electricity consumption in residential, commercial and industrial sectors. The energy-efficient lights, for example, light-emitting diode lamps, are reducing this share significantly over the last few years. These nonlinear LED lamps are the source of current harmonics and reduce the power quality in the low-voltage grid. The estimation of the magnitude by which they affect the power quality is essential for network operators. However, the thermal stability of the lamps is a prime consideration for the accurate assessment of the power quality. This paper investigates the effect of thermal stability on current harmonics injected by LED lamps.

Original languageEnglish
Pages (from-to)1525-1539
Number of pages15
JournalElectrical Engineering
Issue number3
Early online date5 Jan 2021
Publication statusPublished - Jun 2021
MoE publication typeA1 Journal article-refereed


  • Harmonics
  • LED lamps
  • Lighting modeling
  • Power quality
  • Thermal stability


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