A Control Strategy of Single-phase Active Filter Using a Novel d-q Transformation

Makoto Saitou, Nobuyuki Matsui, Toshihisa Shimizu

Research output: Contribution to journalConference articlepeer-review

130 Citations (Scopus)


In this paper, a control strategy of the single-phase active filter using a novel d-q transformation is proposed. This d-q transformation is implemented by using Hubert transform, by which the instantaneous single-phase voltage and current are converted into complex vectors (analytic signals) on the instantaneous basis. Since the fundamental components of voltages and currents are converted into dc components on the d-q coordinate both in the steady and transient states, the harmonics of voltages and currents can be obtained precisely through the low-pass filer installed on the d-q coordinate. This results in the economical active filter with a small capacitor suppressing the dc bus voltage fluctuation because the fundamental power can be fully removed from the active filter input.

Original languageEnglish
Pages (from-to)1222-1227
Number of pages6
JournalConference Record - IAS Annual Meeting (IEEE Industry Applications Society)
Publication statusPublished - 2003 Nov 21
Externally publishedYes
Event2003 IEEE Industry Applications Conference; 38th IAS Annual Meeting: Crossroads To Innovation - Salt Lake City, UT, United States
Duration: 2003 Oct 122003 Oct 16


  • Active filter
  • Hubert Transform
  • Instantaneous active power and reactive power
  • Single-phase

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Industrial and Manufacturing Engineering
  • Electrical and Electronic Engineering


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