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Active power filters (APF), which compensate harmonic and reactive current component for the power supplies, can improve the power quality and enhance the reliability and stability on power utility. The control strategies applied to active power filters play a very important role on the improvement of the performance and stability of APF; with the development of control strategies, APF techniques developed quickly. In this paper, the control strategies applied to active power filters are reviewed and analyzed. The characteristics and applicability obtained from the analysis can become the reference to the design of the APF. This paper presents the possible trends of the control strategies applied to active filters.
Date of Conference: 5-8 April 2004