An applicability of Teager energy operator and energy separation algorithm for waveform distortion analysis: Harmonics, inter-harmonics and frequency variation

Soo Hwan Cho, Jin Hur, Il Yop Chung

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

This paper deals with an application of Teager Energy Operator (TEO) and Energy Separation Algorithm(ESA) to detect and determine various voltage waveform distortions like harmonics, inter-harmonics and frequency variation. Because the TEO and DESA algorithm was initially proposed for speech or communication analysis, its applications are limited to some types of waveform in the power quality analysis area. For example, an undistorted voltage signal is similar with a pure sinusoid. A voltage fluctuation is very similar with an amplitude-modulated signal, from the viewpoint of signal theory. And a continuous frequency variation is similar with a frequency-modulated signal, which is also known as a chirp signal. This paper is written to show that the TEO and DESA algorithm can be used for detecting occurrences of the representative waveform distortions and determining their instantaneous information of amplitude and frequency.

Original languageEnglish
Pages (from-to)1210-1216
Number of pages7
JournalJournal of Electrical Engineering and Technology
Volume9
Issue number4
DOIs
StatePublished - Jul 2014

Keywords

  • Event detection
  • Frequency variation
  • Harmonics &
  • Inter-harmonics
  • Teager energy operator (TEO)
  • Waveform distortions

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