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A filtering technique for three-phase power systems

Karimi Ghartemani, M ; Sharif University of Technology

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  1. Type of Document: Article
  2. DOI: 10.1109/TIM.2008.2003331
  3. Abstract:
  4. A novel filter for use in three-phase power systems is introduced. When the input to the filter is a balanced three-phase set of signals, the filter suppresses noise and distortions and extracts a smooth three-phase fundamental component. When the input signal to the filter is unbalanced, it extracts the fundamental positive-sequence component of the input signal. The filter also estimates the magnitude, phase angle, and frequency of the signal and adaptively follows the variations in all these three variables. The characteristics of the filter, including its mathematical equations, stability analysis, steady state, and dynamic responses, are discussed in this paper. The filter highly attenuates the harmonics, unknown interharmonics, and distortions. However, an extension of the filter for full removal of harmonics and unknown interharmonics is also presented, and its operating principles are discussed. The structural simplicity and robustness of the filter make it desirable for power system applications. In addition to the wide applications in power systems, it can specifically be used as an adaptive antialiasing filter for three-phase applications. © 2009 IEEE
  5. Keywords:
  6. Adaptive filtering ; Adaptive filters ; Anti-aliasing ; Applications ; Dynamic response ; Electric filters ; Electric network analysis ; Electric power transmission networks ; Equations of state ; Optical filters ; Phase locked loops ; Power transmission ; Spurious signal noise ; Antialiasing filter ; Filtering techniques ; Fundamental components ; Input signals ; Inter-harmonics ; Mathematical equations ; Operating principles ; Phase angles ; Power system applications ; Power systems ; Sequence components ; Stability analysis ; Steady state ; Symmetrical components ; Three-phase adaptive filter ; Three-phase phase-locked loop (3PLL) ; Three-phase power systems ; Signal processing
  7. Source: IEEE Transactions on Instrumentation and Measurement ; Volume 58, Issue 2 , 2009 , Pages 389-396 ; 00189456 (ISSN)
  8. URL: http://ieeexplore.ieee.org/document/4623143/?reload=true