The use of fractal analysis for characterizing nonlinear load harmonics

Kingsley C. Umeh, Azah Mohamed, Aini Hussain, Ramizi Mohamed

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

One of the power quality concerns that have received most attention is the problem of harmonics which are generated by widely dispersed single phase nonlinear loads. Such loads cause harmonic distortion of voltages and currents in a power distribution system. In order to fully understand the problem of harmonic distortion, an effective means of identifying the harmonic patterns generated by different types of nonlinear loads is considered. This paper presents the application of fractal analysis for analyzing various harmonic current waveforms generated by typical nonlinear loads such as personal computer, fluorescent lights and uninterruptible power supply. The fractal technique provides both time and spectral information of the nonlinear load harmonic patterns. The analysis results shows that the various harmonic current waveforms can be easily identified from the characteristics of the fractal features. This investigation proves that the fractal technique is a useful tool for identifying harmonic current waveforms and forms a basis towards the development of the harmonic load recognition system.

Original languageEnglish
Pages (from-to)111-116
Number of pages6
JournalIranian Journal of Electrical and Computer Engineering
Volume3
Issue number2
Publication statusPublished - Jun 2004

Fingerprint

Fractals
Harmonic distortion
Uninterruptible power systems
Power quality
Personal computers
Electric potential

Keywords

  • Fractal analysis
  • Harmonics
  • Nonlinear loads
  • Power quality

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Computer Science(all)

Cite this

The use of fractal analysis for characterizing nonlinear load harmonics. / Umeh, Kingsley C.; Mohamed, Azah; Hussain, Aini; Mohamed, Ramizi.

In: Iranian Journal of Electrical and Computer Engineering, Vol. 3, No. 2, 06.2004, p. 111-116.

Research output: Contribution to journalArticle

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