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This paper describes the newest hybrid active filter topology, the Smart Impedance, under unbalanced harmonic mitigation in three-phase four-wire systems. A three-phase modular approach permits the selective compensation of unbalanced harmonic components, no matter the current imbalance level or the harmonic sequence components flowing through the line. The Smart Impedance effectiveness highlights...
This paper proposes a control strategy for Hybrid Active Series Power Filter (HASPF) based on a P+Resonant compensator. The proposed control uses Modified Synchronous Reference Frame to isolate the harmonic content of the source current and a P+Resonant regulator to calculate the harmonic voltage signal necessary to properly tune the hybrid branch. This control strategy ensures multiple frequencies...
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