A comparison and assessment of hybrid filter topologies and control algorithms

Hybrid active filters inherit the efficiency of passive filters and the improved performance of active filters, and thus constitute a viable improved approach for harmonic compensation. This paper presents an assessment and comparison of hybrid active filters, including their topologies, ratings, and control algorithms. Simulations are presented, along with a comprehensive topology and performance comparison. In addition, a modified "p-q" theory is introduced for control strategies, which is more feasible for extracting harmonic components for distorted load voltages.

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