Rapid on-line frequency determination using non-linear signal processing

K. M. Tsang, Wai Lok Chan, L. L. Lai

Research output: Journal article publicationJournal articleAcademic researchpeer-review

1 Citation (Scopus)


A rapid on-line frequency estimation algorithm with the help of non-linearity is presented. A full-wave rectification of the raw signal is carried out such that the fundamental frequency is doubled. The rectified signal is filtered and the signal frequency is extracted based on the filtered fundamental component and second order harmonics. Simulation example and real measurement are included to demonstrate the effectiveness of the algorithm.
Original languageEnglish
Pages (from-to)1137-1143
Number of pages7
JournalElectric Power Components and Systems
Issue number10
Publication statusPublished - 1 Oct 2005


  • Frequency estimation
  • Non-linear signal processing

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Mechanical Engineering
  • Electrical and Electronic Engineering


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